threading fixes for skateshop

[carveJwlIkooP6JGAAIwe30JlM.git] / workshop.c

#ifndef WORKSHOP_C
#define WORKSHOP_C

#define VG_GAME
#include "vg/vg.h"
#include "vg/vg_tex.h"
#include "ent_skateshop.h"

#include "vg/vg_steam_auth.h"
#include "vg/vg_steam_ugc.h"
#include "vg/vg_steam_friends.h"

#define WORKSHOP_VIEW_PER_PAGE 15

struct workshop_form{
   struct {
      char title[80];
      char description[512];

      PublishedFileId_t file_id; /* 0 if not published yet */

      struct ui_dropdown_value visibility;

      int submit_title,       /* set if the respective controls are touched */
          submit_description,
          submit_file_and_image;
   } 
   submission;

   enum workshop_form_page{
      k_workshop_form_hidden, 
      k_workshop_form_open,      /* open but not looking at anything */
      k_workshop_form_edit,      /* editing a submission */
      k_workshop_form_cclosing,
      k_workshop_form_closing_good, /* post upload screen */
      k_workshop_form_closing_bad,  
   }
   page;

   /* model viewer 
    * -----------------------------
    */

   char model_path[128];

   struct player_board board_model;

   /* what does the user want to do with the image preview? */
   enum workshop_form_file_intent{
      k_workshop_form_file_intent_none,         /* loading probably */
      k_workshop_form_file_intent_new,          /* board_model is valid */
      k_workshop_form_file_intent_keep_old      /* just browsing */
   }
   file_intent;

   world_instance *view_world;
   ent_swspreview *ptr_ent;
   v2f view_angles,
       view_angles_begin;
   v3f view_offset,
       view_offset_begin;

   float view_dist;
   int view_changed;

   /*
    * published UGC request
    * ------------------------------
    */

   struct {
      UGCQueryHandle_t handle;
      EResult result;

      int all_item_count,
          returned_item_count;
   }
   ugc_query;

   /* 
    * UI information
    * ------------------------------------------
    */

   const char *failure_or_success_string;

   int img_w, img_h;
   u8 *img_buffer;

   int view_published_page_count,
       view_published_page_id;

   struct published_file{
      EResult result;
      int result_index;
      char title[80];
   }
   published_files_list[WORKSHOP_VIEW_PER_PAGE];
   int published_files_list_length;
}
static workshop_form;

static struct ui_dropdown_opt workshop_form_visibility_opts[] = {
 { "Public",       k_ERemoteStoragePublishedFileVisibilityPublic },
 { "Unlisted",     k_ERemoteStoragePublishedFileVisibilityUnlisted },
 { "Friends Only", k_ERemoteStoragePublishedFileVisibilityFriendsOnly },
 { "Private",      k_ERemoteStoragePublishedFileVisibilityPrivate },
};

/* 
 * Close the form and discard UGC query result
 */
VG_STATIC void workshop_quit_form(void)
{
   workshop_begin_op( k_workshop_form_op_none );  /* safeguard */
   player_board_unload( &workshop_form.board_model );
   workshop_form.file_intent = k_workshop_form_file_intent_none;

   if( workshop_form.ugc_query.result == k_EResultOK ){
      workshop_form.ugc_query.result = k_EResultNone;

      ISteamUGC *hSteamUGC = SteamAPI_SteamUGC();
      SteamAPI_ISteamUGC_ReleaseQueryUGCRequest( 
            hSteamUGC, workshop_form.ugc_query.handle );
   }

   workshop_form.page = k_workshop_form_hidden;
   workshop_end_op();
}

/*
 * Delete all information about the submission
 */
VG_STATIC void workshop_reset_submission_data(void)
{
   workshop_form.submission.file_id = 0; /* assuming id of 0 is none/invalid */
   workshop_form.submission.description[0] = '\0';
   workshop_form.submission.title[0] = '\0';

   workshop_form.submission.visibility.value = 
      k_ERemoteStoragePublishedFileVisibilityPublic;
   workshop_form.submission.visibility.index = 0;

   workshop_form.model_path[0] = '\0';
   player_board_unload( &workshop_form.board_model );
   workshop_form.file_intent = k_workshop_form_file_intent_none;
}


/*
 * Mostly copies of what it sais on the Steam API documentation
 */
VG_STATIC const char *workshop_EResult_user_string( EResult result )
{
   switch( result ){
    case k_EResultInsufficientPrivilege:
     return "Your account is currently restricted from uploading content "
             "due to a hub ban, account lock, or community ban. You need to "
             "contact Steam Support to resolve the issue."; 
    case k_EResultBanned:
     return "You do not have permission to upload content to this hub "
             "because you have an active VAC or Game ban.";
    case k_EResultTimeout:
     return "The operation took longer than expected, so it was discarded. "
            "Please try again.";
    case k_EResultNotLoggedOn:
     return "You are currently not logged into Steam.";
    case k_EResultServiceUnavailable:
     return "The workshop server is having issues or is unavailable, "
            "please try again.";
    case k_EResultInvalidParam:
     return "One of the submission fields contains something not being " 
            "accepted by that field.";
    case k_EResultAccessDenied:
     return "There was a problem trying to save the title and description. "
            "Access was denied.";
    case k_EResultLimitExceeded:
     return "You have exceeded your Steam Cloud quota. If you wish to "
            "upload this file, you must remove some published items.";
    case k_EResultFileNotFound:
     return "The uploaded file could not be found.";
    case k_EResultDuplicateRequest:
     return "The file was already successfully uploaded.";
    case k_EResultDuplicateName:
     return "You already have a Steam Workshop item with that name.";
    case k_EResultServiceReadOnly:
     return "Due to a recent password or email change, you are not allowed "
             "to upload new content. Usually this restriction will expire in"
             " 5 days, but can last up to 30 days if the account has been "
             "inactive recently.";
     default: 
      return "Operation failed for an error which has not been accounted for "
             "by the programmer. Try again, sorry :)";
   }
}

/*
 * op: k_workshop_form_op_publishing_update 
 * ----------------------------------------------------------------------------
 */

/*
 * The endpoint of this operation
 */
VG_STATIC void on_workshop_update_result( void *data, void *user )
{
   vg_info( "Recieved workshop update result\n" );
   SubmitItemUpdateResult_t *result = data;

   /* this seems to be set here, but my account definitely has accepted it */
   if( result->m_bUserNeedsToAcceptWorkshopLegalAgreement ){
      vg_warn( "Workshop agreement currently not accepted\n" );
   }
   
   if( result->m_eResult == k_EResultOK ){
      workshop_form.page = k_workshop_form_closing_good;
      workshop_form.failure_or_success_string = "Uploaded workshop file!";
      vg_success( "file uploaded\n" );
   }
   else{
      workshop_form.page = k_workshop_form_closing_bad;
      workshop_form.failure_or_success_string = 
         workshop_EResult_user_string( result->m_eResult );

      vg_error( "Error with the submitted file (%d)\n", result->m_eResult );
   }

   workshop_end_op();
}

struct workshop_package_info {
   PublishedFileId_t publishing_file_id;

   int success;
   char abs_preview_image[ 1024 ];
   char abs_content_folder[ 1024 ];
   char abs_content_file[ 1024 ];

   const char *failure_reason;
};

/*
 * reciever on completion of packaging the files, it will then start the item
 * update with Steam API
 */
VG_STATIC void workshop_form_async_package_complete( void *data, u32 size )
{
   struct workshop_package_info *info = data;
   if( !info->success ){
      workshop_form.page = k_workshop_form_closing_bad;
      workshop_form.failure_or_success_string = info->failure_reason;
      workshop_end_op();
      return;
   }

   ISteamUGC *hSteamUGC = SteamAPI_SteamUGC();
   UGCUpdateHandle_t handle 
      = SteamAPI_ISteamUGC_StartItemUpdate( hSteamUGC, SKATERIFT_APPID,
                                            info->publishing_file_id );

   /* TODO: Handle failure cases for these */

   if( workshop_form.submission.submit_title ){
      vg_info( "Setting title\n" );
      SteamAPI_ISteamUGC_SetItemTitle( hSteamUGC, handle, 
                                       workshop_form.submission.title );
   }

   if( workshop_form.submission.submit_description ){
      vg_info( "Setting description\n" );
      SteamAPI_ISteamUGC_SetItemDescription( hSteamUGC, handle, 
                                       workshop_form.submission.description);
   }

   if( workshop_form.submission.submit_file_and_image ){
      vg_info( "Setting preview image\n" );
      SteamAPI_ISteamUGC_SetItemPreview( hSteamUGC, 
                                         handle, info->abs_preview_image );

      vg_info( "Setting item content\n" );
      SteamAPI_ISteamUGC_SetItemContent( hSteamUGC, handle, 
                                         info->abs_content_folder );
   }

   vg_info( "Setting visibility\n" );
   SteamAPI_ISteamUGC_SetItemVisibility( hSteamUGC, handle, 
                                 workshop_form.submission.visibility.value );

   vg_info( "Submitting updates\n" );
   vg_steam_async_call *call = vg_alloc_async_steam_api_call();
   call->userdata = NULL;
   call->p_handler = on_workshop_update_result;
   call->id = SteamAPI_ISteamUGC_SubmitItemUpdate( hSteamUGC, handle, "" );
}

/*
 * Async thread for rearranging files into a reasonable workshop folder
 */
struct workshop_package_thread_args{
   PublishedFileId_t file_id;
};
VG_STATIC void _workshop_package_thread( void *_args )
{
   struct workshop_package_thread_args *args = _args;
   PublishedFileId_t file_id = args->file_id;

   vg_info( "Packaging workshop content folder\n" );

   vg_async_item *call = vg_async_alloc( sizeof(struct workshop_package_info) );
   struct workshop_package_info *info = call->payload;
   info->publishing_file_id = file_id;
   info->failure_reason = "Unknown failure reason";
   
   /* build content folder path */
   snprintf( info->abs_content_folder, 1024, "%smodels/boards/workshop/%lu", 
             vg.base_path, file_id );

   /* build content file path */
   snprintf( info->abs_content_file, 1024, "%s/%s", info->abs_content_folder, 
             "board.mdl" );

   /* build workshop preview file path */
   snprintf( info->abs_preview_image, 1024, "%sworkshop_preview.jpg", 
             vg.base_path );

   /* arange files */
   if( !vg_mkdir( info->abs_content_folder ) ){
      info->success = 0;
      info->failure_reason = "Could not make directory.";
      vg_async_dispatch( call, workshop_form_async_package_complete );
      return;
   }

   vg_linear_clear( vg_mem.scratch );
   if( !vg_file_copy( workshop_form.model_path, info->abs_content_file, 
                      vg_mem.scratch ) ){
      info->success = 0;
      info->failure_reason = "Copy file failed.";
      vg_async_dispatch( call, workshop_form_async_package_complete );
      return;
   }

   info->success = 1;
   vg_async_dispatch( call, workshop_form_async_package_complete );
}

/*
 * Begins the packaging thread using file_id. Thread definition above.
 */
VG_STATIC void workshop_package_submission( PublishedFileId_t file_id )
{
   vg_linear_clear( vg_mem.scratch );
   struct workshop_package_thread_args *args = 
      vg_linear_alloc( vg_mem.scratch, 
                       sizeof(struct workshop_package_thread_args));

   args->file_id = file_id;
   vg_loader_start( _workshop_package_thread, args );
}

/*
 * Steam API call result for when we've created a new item on their network, or 
 * not, if it has failed
 */
VG_STATIC void on_workshop_createitem( void *data, void *user )
{
   CreateItemResult_t *result = data;

   if( result->m_eResult == k_EResultOK ){
      vg_info( "Created workshop file with id: %lu\n", 
                result->m_nPublishedFileId );

      if( result->m_bUserNeedsToAcceptWorkshopLegalAgreement ){
         vg_warn( "Workshop agreement currently not accepted\n" );
      }
      
      workshop_package_submission( result->m_nPublishedFileId );
   }
   else{
      const char *errstr = workshop_EResult_user_string( result->m_eResult );
      
      if( errstr ){
         vg_error( "ISteamUGC_CreateItem() failed(%d): '%s' \n", 
                     result->m_eResult, errstr );
      }

      workshop_form.page = k_workshop_form_closing_bad;
      workshop_form.failure_or_success_string = errstr;
      workshop_end_op();
   }
}

/*
 * Starts the workshop upload process through Steam API
 */
VG_STATIC void workshop_form_async_submit_begin( void *payload, u32 size )
{
   /* use existing file */
   if( workshop_form.submission.file_id ){
      if( workshop_form.submission.submit_file_and_image ){
         workshop_package_submission( workshop_form.submission.file_id );
      }
      else{
         struct workshop_package_info info;
         info.abs_content_file[0] = '\0';
         info.abs_content_folder[0] = '\0';
         info.abs_preview_image[0] = '\0';
         info.failure_reason = NULL;
         info.publishing_file_id = workshop_form.submission.file_id;
         info.success = 1;
         workshop_form_async_package_complete( &info, 
                                       sizeof(struct workshop_package_info) );
      }
   }
   else{
      vg_steam_async_call *call = vg_alloc_async_steam_api_call();
      call->userdata = NULL;
      call->p_handler = on_workshop_createitem;
      ISteamUGC *hSteamUGC = SteamAPI_SteamUGC();
      call->id = SteamAPI_ISteamUGC_CreateItem( hSteamUGC, SKATERIFT_APPID, 
                                                k_EWorkshopFileTypeCommunity );
   }
}

/*
 * Downloads the framebuffer into scratch memory
 */
VG_STATIC void workshop_form_async_download_image( void *payload, u32 size )
{
   int w, h;
   render_fb_get_current_res( gpipeline.fb_workshop_preview, &w, &h );
   vg_linear_clear( vg_mem.scratch );
   workshop_form.img_buffer = vg_linear_alloc( vg_mem.scratch, w*h*3 );

   vg_info( "read framebuffer: glReadPixels( %dx%d )\n", w,h );

   glBindFramebuffer( GL_READ_FRAMEBUFFER, gpipeline.fb_workshop_preview->fb );
   glReadBuffer( GL_COLOR_ATTACHMENT0 );
   glReadPixels( 0,0, w,h, GL_RGB, GL_UNSIGNED_BYTE, workshop_form.img_buffer );

   workshop_form.img_w = w;
   workshop_form.img_h = h;
}

/*
 * Thread which kicks off the upload process
 */
VG_STATIC void _workshop_form_submit_thread( void *data )
{
   vg_async_call( workshop_form_async_download_image, NULL, 0 );
   vg_async_stall();

   int w = workshop_form.img_w,
       h = workshop_form.img_h;

   vg_info( "writing: workshop_preview.jpg (%dx%d @90%%)\n", w,h );
   stbi_flip_vertically_on_write(1);
   stbi_write_jpg( "workshop_preview.jpg", w,h, 3, 
                   workshop_form.img_buffer, 90 );

   vg_async_call( workshop_form_async_submit_begin, NULL, 0 );
}

/*
 * Entry point for the publishing submission operation
 */
VG_STATIC void workshop_op_submit(void)
{
   /* TODO: Show these errors to the user */

   if( workshop_form.submission.submit_title ){
      if( !workshop_form.submission.title[0] ){
         vg_error( "Cannot submit because a title is required\n" );
         return;
      }
   }

   if( workshop_form.submission.submit_description ){
      if( !workshop_form.submission.description[0] ){
         vg_error( "Cannot submit because a description is required\n" );
         return;
      }
   }

   if( workshop_form.submission.submit_file_and_image ){
      if( workshop_form.file_intent == k_workshop_form_file_intent_none ){
         vg_error( "Cannot submit because the file is empty or unspecified\n" );
         return;
      }
   }

   workshop_begin_op( k_workshop_form_op_publishing_update );

   player_board_unload( &workshop_form.board_model );
   workshop_form.file_intent = k_workshop_form_file_intent_none;

   vg_loader_start( _workshop_form_submit_thread, NULL );
}

/*
 *  op: k_workshop_form_op_loading_model
 * -----------------------------------------------------------------------------
 */

/*
 * Reciever for completion of the model file load
 */
VG_STATIC void workshop_form_loadmodel_async_complete( void *payload, u32 size )
{
   v2_zero( workshop_form.view_angles );
   v3_zero( workshop_form.view_offset );
   workshop_form.view_dist = 1.0f;
   workshop_form.view_changed = 1;
   workshop_form.file_intent = k_workshop_form_file_intent_new;
   
   vg_success( "workshop async load complete\n" );
   workshop_end_op();
}

/*
 * Thread which loads the model from the disk 
 */
VG_STATIC void _workshop_form_load_thread( void *data )
{
   player_board_load( &workshop_form.board_model, workshop_form.model_path );
   vg_async_call( workshop_form_loadmodel_async_complete, NULL, 0 );
}

/*
 * Entry point for load model operation
 */
VG_STATIC void workshop_op_load_model(void)
{
   workshop_begin_op( k_workshop_form_op_loading_model );
   vg_loader_start( _workshop_form_load_thread, NULL );
}

/*
 * op: k_workshop_form_op_downloading_submission 
 * -----------------------------------------------------------------------------
 */

/*
 * The image has been decoded and is ready to slap into the framebuffer
 */
VG_STATIC void workshop_form_async_imageload( void *data, u32 len )
{
   if( data ){
      struct framebuffer_attachment *a = 
         &gpipeline.fb_workshop_preview->attachments[0];

      glBindTexture( GL_TEXTURE_2D, a->id );
      glTexSubImage2D( GL_TEXTURE_2D, 0,0,0,
                        WORKSHOP_PREVIEW_WIDTH, WORKSHOP_PREVIEW_HEIGHT, 
                        a->format, a->type, data );
      stbi_image_free( data );
      vg_success( "Loaded workshop preview image\n" );
   }
   
   workshop_end_op();
}

struct workshop_loadpreview_info {
   char abs_preview_image[ 1024 ];
};

/*
 * Load the image located at ./workshop_preview.jpg into our framebuffer
 */
VG_STATIC void _workshop_load_preview_thread( void *data )
{
   struct workshop_loadpreview_info *info = data;

   stbi_set_flip_vertically_on_load(1);
   int x, y, nc;
   u8 *rgb = stbi_load( info->abs_preview_image, &x, &y, &nc, 3 );

   if( rgb ){
      if( (x == WORKSHOP_PREVIEW_WIDTH) && (y == WORKSHOP_PREVIEW_HEIGHT) ){
         vg_async_call( workshop_form_async_imageload, rgb, x*y*3 );
      }
      else{
         vg_error( "Resolution does not match framebuffer, so we can't"
                   " show it\n" );
         stbi_image_free( rgb );
         vg_async_call( workshop_form_async_imageload, NULL, 0 );
      }
   }
   else{
      vg_error( "Failed to load workshop_preview.jpg: '%s'\n", 
                  stbi_failure_reason() );
      vg_async_call( workshop_form_async_imageload, NULL, 0 );
   }
}

/*
 * Reciever for the preview download result
 */
VG_STATIC void on_workshop_download_ugcpreview( void *data, void *user )
{
   struct workshop_loadpreview_info *info = user;
   RemoteStorageDownloadUGCResult_t *result = data;

   if( result->m_eResult == k_EResultOK ){
      ISteamRemoteStorage *hSteamRemoteStorage = SteamAPI_SteamRemoteStorage();
      vg_loader_start( _workshop_load_preview_thread, info );
   }
   else{
      vg_error( "Error while donwloading UGC preview( %d )\n", 
                result->m_eResult );
      workshop_end_op();
   }
}

/*
 * Entry point to view operation
 */
VG_STATIC void workshop_op_download_and_view_submission( int result_index )
{
   ISteamUGC *hSteamUGC = SteamAPI_SteamUGC();
   ISteamRemoteStorage *hSteamRemoteStorage = SteamAPI_SteamRemoteStorage();
   SteamUGCDetails_t details;
   if( SteamAPI_ISteamUGC_GetQueryUGCResult( hSteamUGC, 
                                             workshop_form.ugc_query.handle,
                                             result_index,
                                             &details ) )
   {
      workshop_begin_op( k_workshop_form_op_downloading_submission );
      workshop_reset_submission_data();
      workshop_form.submission.submit_description = 0;
      workshop_form.submission.submit_file_and_image = 0;
      workshop_form.submission.submit_title = 0;

      vg_strncpy( details.m_rgchDescription, 
                  workshop_form.submission.description, 
                  vg_list_size( workshop_form.submission.description ),
                  k_strncpy_always_add_null );

      vg_strncpy( details.m_rgchTitle,
                  workshop_form.submission.title,
                  vg_list_size( workshop_form.submission.title ),
                  k_strncpy_always_add_null );

      snprintf( workshop_form.model_path, 
                 vg_list_size( workshop_form.model_path ),
                 "Steam Cloud (%lu)", details.m_nPublishedFileId );

      workshop_form.submission.file_id = details.m_nPublishedFileId;
      workshop_form.file_intent = k_workshop_form_file_intent_keep_old;
      workshop_form.page = k_workshop_form_edit;
      workshop_form.submission.visibility.value = details.m_eVisibility;

      for( i32 i=0; i<vg_list_size(workshop_form_visibility_opts); i++ ){
         if( workshop_form_visibility_opts[i].value == details.m_eVisibility ){
            workshop_form.submission.visibility.index = i;
            break;
         }
      }

      if( details.m_hPreviewFile == 0 ){
         vg_error( "m_hPreviewFile is 0\n" );
         workshop_end_op();
      }
      else{
         /* Now need to begin downloading the image so we can display it */
         vg_steam_async_call *call = vg_alloc_async_steam_api_call();

         struct workshop_loadpreview_info *info = 
            vg_linear_alloc( vg_mem.scratch, 
                             sizeof( struct workshop_loadpreview_info ) );

         snprintf( info->abs_preview_image, 1024, 
                   "%smodels/boards/workshop/" PRINTF_U64 ".jpg", 
                   vg.base_path, details.m_hPreviewFile );

         call->p_handler = on_workshop_download_ugcpreview;
         call->userdata = info;
         call->id = SteamAPI_ISteamRemoteStorage_UGCDownloadToLocation(
               hSteamRemoteStorage,
               details.m_hPreviewFile, info->abs_preview_image, 1 );

         vg_info( "preview file id: " PRINTF_U64 "\n", 
               details.m_hPreviewFile );
      }
   }
   else{
      vg_error( "GetQueryUGCResult: Index out of range\n" );
      workshop_end_op();
   }
}

/*
 * Regular stuff
 * -----------------------------------------------------------------------------
 */

/*
 * View a page of results on the sidebar
 */
VG_STATIC void workshop_view_page( int req )
{
   if( workshop_form.ugc_query.result != k_EResultOK ){
      vg_error( "Tried to change page without complete data\n" );
      return;
   }

   int page = VG_MAX(VG_MIN(req, workshop_form.view_published_page_count-1),0),
       start = page * WORKSHOP_VIEW_PER_PAGE,
       end   = VG_MIN( (page+1) * WORKSHOP_VIEW_PER_PAGE, 
                       workshop_form.ugc_query.returned_item_count ),
       count = end-start;

   vg_info( "View page %d\n", page );

   workshop_form.view_published_page_id = page;
   workshop_form.published_files_list_length = count;
   ISteamUGC *hSteamUGC = SteamAPI_SteamUGC();

   for( int i=0; i<count; i ++ ){
      struct published_file *pfile = &workshop_form.published_files_list[i];

      SteamUGCDetails_t details;
      if( SteamAPI_ISteamUGC_GetQueryUGCResult( hSteamUGC, 
                                                workshop_form.ugc_query.handle,
                                                start+i,
                                                &details ) )
      {
         if( details.m_eResult != k_EResultOK ){
            snprintf( pfile->title, 80, "Error (%d)", details.m_eResult );
         }
         else{
            vg_strncpy( details.m_rgchTitle, pfile->title, 80,
                        k_strncpy_always_add_null );
         }

         pfile->result = details.m_eResult;
         pfile->result_index = start+i;
      }
      else{
         pfile->result = k_EResultValueOutOfRange;
         pfile->result_index = -1;
         snprintf( pfile->title, 80, "Error (invalid index)" );
      }
   }
}

/*
 * Steam API result for when we recieve submitted UGC information about the user
 */
VG_STATIC void on_workshop_UGCQueryComplete( void *data, void *userdata )
{
   SteamUGCQueryCompleted_t *query = data;
   workshop_form.ugc_query.result = query->m_eResult;

   if( query->m_eResult == k_EResultOK ){
      if( query->m_unTotalMatchingResults > 50 ){
         vg_warn( "You have %d items submitted, "
                  "we can only view the last 50\n" );
      }

      workshop_form.ugc_query.all_item_count = query->m_unTotalMatchingResults;
      workshop_form.ugc_query.returned_item_count =
                                             query->m_unNumResultsReturned;

      workshop_form.ugc_query.handle = query->m_handle;
      workshop_form.view_published_page_count = 
         (query->m_unNumResultsReturned+WORKSHOP_VIEW_PER_PAGE-1)/
            WORKSHOP_VIEW_PER_PAGE;
      workshop_form.view_published_page_id = 0;
      workshop_form.published_files_list_length = 0;

      workshop_view_page( 0 );
   }
   else{
      vg_error( "Steam UGCQuery failed (%d)\n", query->m_eResult );
      workshop_form.view_published_page_count = 0;
      workshop_form.view_published_page_id = 0;
      workshop_form.published_files_list_length = 0;

      ISteamUGC *hSteamUGC = SteamAPI_SteamUGC();
      SteamAPI_ISteamUGC_ReleaseQueryUGCRequest( hSteamUGC, query->m_handle );
   }
}

/*
 * Console command to open the workshop publisher
 */
VG_STATIC int workshop_submit_command( int argc, const char *argv[] )
{
   if( !steam_ready ){
      vg_error( "Steam API is not ready or loaded\n" );
      return 0;
   }

   workshop_form.page = k_workshop_form_open;
   workshop_form.view_published_page_count = 0;
   workshop_form.view_published_page_id = 0;
   workshop_form.published_files_list_length = 0;
   workshop_form.ugc_query.result = k_EResultNone;

   vg_steam_async_call *call = vg_alloc_async_steam_api_call();

   ISteamUser *hSteamUser = SteamAPI_SteamUser();
   CSteamID steamid;
   steamid.m_unAll64Bits = SteamAPI_ISteamUser_GetSteamID( hSteamUser );

   ISteamUGC *hSteamUGC = SteamAPI_SteamUGC();
   call->p_handler = on_workshop_UGCQueryComplete;
   call->userdata = NULL;
   UGCQueryHandle_t handle = SteamAPI_ISteamUGC_CreateQueryUserUGCRequest
              ( 
                hSteamUGC,
                steamid.m_comp.m_unAccountID,
                k_EUserUGCList_Published, 
                k_EUGCMatchingUGCType_Items,
                k_EUserUGCListSortOrder_CreationOrderDesc,
                SKATERIFT_APPID, SKATERIFT_APPID,
                1 );
   call->id = SteamAPI_ISteamUGC_SendQueryUGCRequest( hSteamUGC, handle );
   return 0;
}

VG_STATIC void workshop_init(void)
{
   vg_console_reg_cmd( "workshop_submit", workshop_submit_command, NULL );
}

VG_STATIC void workshop_find_preview_entity(void)
{
   workshop_form.view_world = get_active_world();

   if( mdl_arrcount( &workshop_form.view_world->ent_swspreview ) ){
      workshop_form.ptr_ent = 
            mdl_arritm( &workshop_form.view_world->ent_swspreview, 0 );
      workshop_form.page = k_workshop_form_edit;
   }
   else{
      vg_error( "There is no ent_swspreview in the level. "
                "Cannot publish here\n" );
   }
}

/*
 * Redraw the model file into the workshop framebuffer
 */
VG_STATIC void workshop_render_preview(void)
{
   if( !workshop_form.ptr_ent ){
      return;
   }

   render_fb_bind( gpipeline.fb_workshop_preview, 0 );

   glClearColor( 0.0f, 0.0f, 0.3f, 1.0f );
   glClear( GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT );
   glEnable( GL_DEPTH_TEST );
   glDisable( GL_BLEND );

   ent_swspreview *swsprev = workshop_form.ptr_ent;
   world_instance *world = workshop_form.view_world;

   ent_camera *ref = mdl_arritm( &world->ent_camera, 
                                 mdl_entity_id_id(swsprev->id_camera) );
   ent_marker *display = mdl_arritm( &world->ent_marker,
                                 mdl_entity_id_id(swsprev->id_display) ),
              *display1= mdl_arritm( &world->ent_marker,
                                 mdl_entity_id_id(swsprev->id_display1) );

   v3f baseco;
   v3_add( display->transform.co, display1->transform.co, baseco );
   v3_muls( baseco, 0.5f, baseco );

   camera cam;
   v3f basevector;
   v3_sub( display->transform.co, ref->transform.co, basevector );
   float dist = v3_length( basevector );

   v3f baseangles;
   player_vector_angles( baseangles, basevector, 1.0f, 0.0f );

   v2_add( workshop_form.view_angles, baseangles, cam.angles );
   cam.angles[2] = 0.0f;

   float sX = sinf( cam.angles[0] ),
         cX = cosf( cam.angles[0] ),
         sY = sinf( cam.angles[1] ),
         cY = cosf( cam.angles[1] );

   v3f offset = { -sX * cY, sY, cX * cY };

   v3_muladds( display->transform.co, offset, 
               dist*workshop_form.view_dist, cam.pos );

   cam.pos[0] += -sX*workshop_form.view_offset[2];
   cam.pos[2] +=  cX*workshop_form.view_offset[2];
   cam.pos[0] +=  cX*workshop_form.view_offset[0];
   cam.pos[2] +=  sX*workshop_form.view_offset[0];
   cam.pos[1] += workshop_form.view_offset[1];

   cam.nearz = 0.01f;
   cam.farz  = 100.0f;
   cam.fov   = ref->fov;
   
   camera_update_transform( &cam );
   camera_update_view( &cam );
   camera_update_projection( &cam );
   camera_finalize( &cam );

   m4x3f mmdl, mmdl1;
   mdl_transform_m4x3( &display->transform, mmdl );
   mdl_transform_m4x3( &display1->transform, mmdl1 );

   /* force update this for nice shadows. its usually set in the world
    * pre-render step, but that includes timer stuff 
    */
   struct player_board *board = &workshop_form.board_model;
   struct ub_world_lighting *ubo = &world->ub_lighting;
   v3f vp0, vp1;
   v3_copy((v3f){0.0f,0.1f, board->truck_positions[0][2]}, vp0 );
   v3_copy((v3f){0.0f,0.1f, board->truck_positions[1][2]}, vp1 );
   m4x3_mulv( mmdl1, vp0, ubo->g_board_0 );
   m4x3_mulv( mmdl1, vp1, ubo->g_board_1 );
   glBindBuffer( GL_UNIFORM_BUFFER, world->ubo_lighting );
   glBufferSubData( GL_UNIFORM_BUFFER, 0, 
                    sizeof(struct ub_world_lighting), &world->ub_lighting );

   render_world( world, &cam, 1 );
   render_board( &cam, world, board, mmdl,  k_board_shader_entity );
   render_board( &cam, world, board, mmdl1, k_board_shader_entity );

   glBindFramebuffer( GL_FRAMEBUFFER, 0 );
   glViewport( 0,0, vg.window_x, vg.window_y );
}

/*
 * ImGUI section for workshop form
 * -----------------------------------------------------------------------------
 */

VG_STATIC void workshop_changed_model_path( char *buf, u32 len ){
   workshop_form.submission.submit_file_and_image = 1;
}

VG_STATIC void workshop_changed_title( char *buf, u32 len ){
   workshop_form.submission.submit_title = 1;
}

VG_STATIC void workshop_changed_description( char *buf, u32 len ){
   workshop_form.submission.submit_description = 1;
}

VG_STATIC void workshop_form_gui_edit_page( ui_rect content )
{
   ui_rect image_plane;
   ui_split( content, k_ui_axis_h, 300, 0, image_plane, content );
   ui_fill( image_plane, ui_colour( k_ui_bg+0 ) );

   ui_rect img_box;
   ui_fit_item( image_plane, (ui_px[2]){ 3, 2 }, img_box );

   if( workshop_form.file_intent == k_workshop_form_file_intent_keep_old ){
      ui_image( img_box, gpipeline.fb_workshop_preview->attachments[0].id );
   }
   else if( workshop_form.file_intent == k_workshop_form_file_intent_new ){
      ui_image( img_box, gpipeline.fb_workshop_preview->attachments[0].id );
      int hover  = ui_inside_rect( img_box, vg_ui.mouse ),
          target = ui_inside_rect( img_box, vg_ui.mouse_click );
      
      if( ui_click_down(UI_MOUSE_MIDDLE) && target ){
         v3_copy( workshop_form.view_offset,
                  workshop_form.view_offset_begin );
      }
      else if( ui_click_down(UI_MOUSE_LEFT) && target ){
         v2_copy( workshop_form.view_angles, 
                  workshop_form.view_angles_begin );
      }

      if( ui_clicking(UI_MOUSE_MIDDLE) && target ){
         v2f delta = { vg_ui.mouse[0]-vg_ui.mouse_click[0],
                       vg_ui.mouse[1]-vg_ui.mouse_click[1] };

         float *begin  = workshop_form.view_offset_begin,
               *offset = workshop_form.view_offset;
         offset[0] = vg_clampf( begin[0]-delta[0]*0.002f, -1.0f, 1.0f );
         offset[2] = vg_clampf( begin[2]-delta[1]*0.002f, -1.0f, 1.0f );
         workshop_form.view_changed = 1;
      }
      else if( ui_clicking(UI_MOUSE_LEFT) && target ){
         v2f delta = { vg_ui.mouse[0]-vg_ui.mouse_click[0],
                       vg_ui.mouse[1]-vg_ui.mouse_click[1] };

         v2f angles;
         v2_muladds( workshop_form.view_angles_begin, delta, 0.002f, angles);

         float limit = VG_PIf*0.2f;

         angles[0] = vg_clampf( angles[0], -limit, limit );
         angles[1] = vg_clampf( angles[1], -limit, limit );

         v2_copy( angles, workshop_form.view_angles );
         workshop_form.view_changed = 1;
      }

      if( !ui_clicking(UI_MOUSE_LEFT) && hover ){
         float zoom = workshop_form.view_dist;
         zoom += vg.mouse_wheel[1] * -0.07f;
         zoom = vg_clampf( zoom, 0.4f, 2.0f );
         
         if( zoom != workshop_form.view_dist ){
            workshop_form.view_changed = 1;
            workshop_form.view_dist = zoom;
         }
      }
   }
   else{
      ui_text( img_box, "No image", 1, k_ui_align_middle_center,
               ui_colour( k_ui_orange ) );
   }

   /* file path */
   ui_rect null, file_entry, file_button, file_label;
   ui_split( content, k_ui_axis_h, 8, 0, null, content );
   ui_split( content, k_ui_axis_h, 28, 0, file_entry, content );
   ui_split( file_entry, k_ui_axis_v, -128, 0, file_entry, file_button );
   ui_split_label( file_entry, "File:", 1, 8, file_label, file_entry );
   ui_text( file_label, "File:", 1, k_ui_align_middle_left, 0 );

   if( workshop_form.file_intent != k_workshop_form_file_intent_none ){
      ui_text( file_entry, workshop_form.model_path, 1, k_ui_align_middle_left,
               ui_colour( k_ui_fg+4 ) );

      if( ui_button_text( file_button, "Remove", 1 ) ){
         player_board_unload( &workshop_form.board_model );
         workshop_form.file_intent = k_workshop_form_file_intent_none;
         workshop_form.model_path[0] = '\0';
      }
   }
   else{
      struct ui_textbox_callbacks callbacks = {
         .change = workshop_changed_model_path
      };

      ui_textbox( file_entry, workshop_form.model_path,
                  vg_list_size(workshop_form.model_path), 0, &callbacks );

      if( ui_button_text( file_button, "Load", 1 ) ){
         workshop_find_preview_entity();
         workshop_op_load_model();
      }
   }

   ui_rect title_entry, label;
   ui_split( content, k_ui_axis_h, 8, 0, null, content );
   ui_split( content, k_ui_axis_h, 28, 0, title_entry, content );

   const char *str_title = "Title:", *str_desc = "Description:";
   ui_split( title_entry, k_ui_axis_v, 
                ui_text_line_width(str_title)+8, 0, label, title_entry );

   ui_rect vis_dropdown;
   ui_split_ratio( title_entry, k_ui_axis_v, 0.6f, 16, 
                   title_entry, vis_dropdown );

   /* title box */
   {
      struct ui_textbox_callbacks callbacks = {
         .change = workshop_changed_title
      };
      ui_text( label, str_title, 1, k_ui_align_middle_left, 0 );
      ui_textbox( title_entry, workshop_form.submission.title, 
                  vg_list_size(workshop_form.submission.title), 0, &callbacks );
   }

   /* visibility option */
   {
      ui_enum( vis_dropdown, "Visibility:", workshop_form_visibility_opts,
               4, &workshop_form.submission.visibility );
   }

   /* description box */
   {
      struct ui_textbox_callbacks callbacks = {
         .change = workshop_changed_description
      };
      ui_rect desc_entry;
      /* TODO: Tommora, new split_px_gap and split_px() */
      ui_split( content, k_ui_axis_h, 8, 0, null, content );
      ui_split( content, k_ui_axis_h, 28, 0, label, content );
      ui_split( content, k_ui_axis_h, 28*4, 0, desc_entry, content );
      ui_text( label, str_desc, 1, k_ui_align_middle_left, 0 );
      ui_textbox( desc_entry, workshop_form.submission.description,
                  vg_list_size(workshop_form.submission.description), 
                     UI_TEXTBOX_MULTILINE|UI_TEXTBOX_WRAP, &callbacks );
   }

   /* submissionable */
   ui_rect submission_row;
   ui_split( content, k_ui_axis_h, 8, 0, null, content );
   ui_split( content, k_ui_axis_h, content[3]-32-8, 0, content, 
                submission_row  );

   ui_rect submission_center;
   rect_copy( submission_row, submission_center );
   submission_center[2] = 256;
   ui_rect_center( submission_row, submission_center );

   ui_rect btn_left, btn_right;
   ui_split_ratio( submission_center, k_ui_axis_v, 0.5f, 8, 
                   btn_left, btn_right );

   if( ui_button_text( btn_left, "Publish", 1 ) ){
      workshop_op_submit();
   }
   if( ui_button_text( btn_right, "Cancel", 1 ) ){
      workshop_form.page = k_workshop_form_open;
      player_board_unload( &workshop_form.board_model );
      workshop_form.file_intent = k_workshop_form_file_intent_none;
   }

   /* disclaimer */
   const char *disclaimer_text = 
      "By submitting this item, you agree to the workshop terms of service";

   ui_rect disclaimer_row, inner, link;
   ui_split( content, k_ui_axis_h, 8, 0, null, content );
   ui_split( content, k_ui_axis_h, content[3]-32, 0, content, 
                disclaimer_row );

   ui_px btn_width = 32;

   rect_copy( disclaimer_row, inner );
   inner[2] = ui_text_line_width( disclaimer_text ) + btn_width+8;

   ui_rect_center( disclaimer_row, inner );
   ui_split( inner, k_ui_axis_v, inner[2]-btn_width, 0, label, btn_right);
   ui_rect_pad( btn_right, (ui_px[2]){2,2} );

   if( ui_button_text( btn_right, "\x91", 2 ) ){
      ISteamFriends *hSteamFriends = SteamAPI_SteamFriends();
      SteamAPI_ISteamFriends_ActivateGameOverlayToWebPage( hSteamFriends,
            "https://steamcommunity.com/sharedfiles/workshoplegalagreement",
            k_EActivateGameOverlayToWebPageMode_Default );
   }

   ui_text( label, disclaimer_text, 1, k_ui_align_middle_left,
            ui_colour( k_ui_fg+4 ) );
}

VG_STATIC void workshop_form_gui_sidebar( ui_rect sidebar )
{
   /* 
    * sidebar existing entries panel
    */
   ui_fill( sidebar, ui_colour( k_ui_bg+2 ) );

   ui_rect title;
   ui_split( sidebar, k_ui_axis_h, 28, 0, title, sidebar );
   ui_text( title, "Your submissions", 1, k_ui_align_middle_center, 0 );

   ui_rect controls, btn_create_new;
   ui_split( sidebar, k_ui_axis_h,  32, 0, controls, sidebar );
   ui_split( sidebar, k_ui_axis_h, -32, 0, sidebar, btn_create_new );
   ui_fill( controls, ui_colour( k_ui_bg+1 ) );

   char buf[32];
   strcpy( buf, "page " );
   int i  = 5;

   /* TODO: for what it is, this code is getting a bit.. special */
       i += highscore_intl( buf+i, workshop_form.view_published_page_id+1, 4 );
            buf[ i ++ ] = '/';
       i += highscore_intl( buf+i, workshop_form.view_published_page_count, 4 );
            buf[ i ++ ] = '\0';

   ui_rect_pad( controls, (ui_px[2]){0,4} );
   ui_rect info;
   ui_split_ratio( controls, k_ui_axis_v, 0.25f, 0, info, controls );
   ui_text( info, buf, 1, k_ui_align_middle_center, 0 );

   ui_rect btn_left, btn_right;
   ui_split_ratio( controls, k_ui_axis_v, 0.5f, 2, btn_left, btn_right );
            
   if( ui_button_text( btn_left, "newer", 1 ) ){
      workshop_view_page( workshop_form.view_published_page_id-1 );
   }

   if( ui_button_text( btn_right, "older", 1 ) ){
      workshop_view_page( workshop_form.view_published_page_count+1 );
   }

   if( ui_button_text( btn_create_new, "Create New Item", 1 ) ){
      workshop_reset_submission_data();
      workshop_form.submission.submit_title = 1;
      workshop_form.submission.submit_description = 1;
      workshop_form.submission.submit_file_and_image = 1;
      workshop_form.page = k_workshop_form_edit;
      workshop_find_preview_entity();
   }

   for( int i=0; i<workshop_form.published_files_list_length; i++ ){
      ui_rect item;
      ui_split( sidebar, k_ui_axis_h, 28, 0, item, sidebar );
      ui_rect_pad( item, (ui_px[2]){4,4} );
      
      struct published_file *pfile = &workshop_form.published_files_list[i];
      if( ui_button_text( item, pfile->title, 1 ) ){
         if( pfile->result == k_EResultOK ){
            vg_info( "Select index: %d\n", pfile->result_index );
            workshop_op_download_and_view_submission( pfile->result_index );
         }
         else{
            vg_warn( "Cannot select that item, result not OK\n" );
         }
      }
   }
}

VG_STATIC void workshop_form_gui(void)
{
   enum workshop_form_page stable_page = workshop_form.page;
   if( stable_page == k_workshop_form_hidden ) return;

   ui_rect null;
   ui_rect screen = { 0, 0, vg.window_x, vg.window_y };
   ui_rect window = { 0, 0, 1000, 700 };
   ui_rect_center( screen, window );
   vg_ui.wants_mouse = 1;

   ui_fill( window, ui_colour( k_ui_bg+1 ) );
   ui_outline( window, 1, ui_colour( k_ui_bg+7 ) );

   ui_rect title, panel;
   ui_split( window, k_ui_axis_h, 28, 0, title, panel );
   ui_fill( title, ui_colour( k_ui_bg+7 ) );
   ui_text( title, "Workshop tool", 1, k_ui_align_middle_center, 
            ui_colourcont(k_ui_bg+7) );

   ui_rect quit_button;
   ui_split( title, k_ui_axis_v, title[2]-title[3], 2, title, quit_button );

   if( workshop.operation == k_workshop_form_op_none ){
      if( ui_button_text( quit_button, "X", 1 ) ){
         workshop_quit_form();
         return;
      }
   }

   /* 
    * temporary operation blinders, we don't yet have a nice way to show the
    * user that we're doing something uninterruptable, so the code just 
    * escapes here and we show them a basic string
    */

   if( workshop.operation != k_workshop_form_op_none ){
      const char *op_string = "The programmer has not bothered to describe "
                              "the current operation that is running.";

      switch(workshop.operation){
         case k_workshop_form_op_loading_model:
            op_string = "Operation in progress: Loading model file.";
         break;
         case k_workshop_form_op_publishing_update:
            op_string = "Operation in progress: publishing submission update "
                        "to steam.";
         break;
         case k_workshop_form_op_downloading_submission:
            op_string = "Operation in progress: downloading existing submission"
                        " from Steam services.";
         break;
         default: break;
      }

      ui_text( panel, op_string, 1, k_ui_align_middle_center, 0 );
      return;
   }

   /* re draw board preview if need to */
   if( (stable_page == k_workshop_form_edit) && 
       workshop_form.view_changed && 
       workshop_form.file_intent == k_workshop_form_file_intent_new )
   {
      workshop_render_preview();
      workshop_form.view_changed = 0;
   }

   struct workshop_form *form = &workshop_form;

   ui_rect sidebar, content;
   ui_split_ratio( panel, k_ui_axis_v, 0.3f, 1, sidebar, content );

   /* content page */
   ui_rect_pad( content, (ui_px[2]){8,8} );

   if( stable_page == k_workshop_form_edit ){
      workshop_form_gui_edit_page( content );
   }
   else if( stable_page == k_workshop_form_open ){
      ui_text( content, "Nothing selected.", 1, k_ui_align_middle_center,
               ui_colour( k_ui_fg+4 ) );
   }
   else if( stable_page >= k_workshop_form_cclosing ){
      ui_rect submission_row;
      ui_split( content, k_ui_axis_h, content[3]-32-8, 0, content, 
                   submission_row );

      u32 colour;

      if( stable_page == k_workshop_form_closing_bad )
         colour = ui_colour( k_ui_red+k_ui_brighter );
      else
         colour = ui_colour( k_ui_green+k_ui_brighter );

      ui_text( content, workshop_form.failure_or_success_string, 1, 
               k_ui_align_middle_center, colour );

      ui_rect submission_center;
      rect_copy( submission_row, submission_center );
      submission_center[2] = 128;
      ui_rect_center( submission_row, submission_center );
      ui_rect_pad( submission_center, (ui_px[2]){8,8} );

      if( ui_button_text( submission_center, "OK", 1 ) ){
         workshop_form.page = k_workshop_form_open;
      }
   }

   workshop_form_gui_sidebar( sidebar );
}

/*
 * Some async api stuff
 * -----------------------------------------------------------------------------
 */

VG_STATIC void async_workshop_get_filepath( void *data, u32 len )
{
   struct async_workshop_filepath_info *info = data;

   u64 _size;
   u32 _ts;

   ISteamUGC *hSteamUGC = SteamAPI_SteamUGC();
   if( !SteamAPI_ISteamUGC_GetItemInstallInfo( hSteamUGC, info->id, &_size,
                                               info->buf, info->len, &_ts ))
   {
      info->buf[0] = '\0';
   }
}

VG_STATIC void async_workshop_get_installed_files( void *data, u32 len )
{
   struct async_workshop_installed_files_info *info = data;

   ISteamUGC *hSteamUGC = SteamAPI_SteamUGC();
   u32 count = SteamAPI_ISteamUGC_GetSubscribedItems( hSteamUGC, info->buffer,
                                                      *info->len );

   vg_info( "Found %u subscribed items\n", count );

   u32 j=0;
   for( u32 i=0; i<count; i++ ){
      u32 state = SteamAPI_ISteamUGC_GetItemState( hSteamUGC, info->buffer[i] );
      if( state & k_EItemStateInstalled ){
         info->buffer[j ++] = info->buffer[i];
      }
   }

   *info->len = j;
}

#endif /* WORKSHOP_C */