feat: 添加图床归档任务支持，优化归档逻辑和错误处理

prisma/migrations/20260426143000_add_image_archive_queue/migration.sql

@@ -0,0 +1,33 @@
+ALTER TABLE `image_generations`
+  ADD COLUMN `archive_status` ENUM('NOT_REQUIRED', 'PENDING', 'RUNNING', 'SUCCEEDED', 'FAILED') NOT NULL DEFAULT 'NOT_REQUIRED',
+  ADD COLUMN `archive_attempts` INT NOT NULL DEFAULT 0,
+  ADD COLUMN `archive_next_run_at` DATETIME(3) NULL,
+  ADD COLUMN `archive_locked_at` DATETIME(3) NULL,
+  ADD COLUMN `archive_locked_by` VARCHAR(191) NULL,
+  ADD COLUMN `archive_last_error` TEXT NULL;
+
+UPDATE `image_generations`
+SET `archive_status` = 'SUCCEEDED'
+WHERE `status` = 'SUCCEEDED'
+  AND `hosted_image_url` IS NOT NULL;
+
+UPDATE `image_generations`
+SET
+  `archive_status` = 'PENDING',
+  `archive_next_run_at` = CURRENT_TIMESTAMP(3)
+WHERE `status` = 'SUCCEEDED'
+  AND `hosted_image_url` IS NULL
+  AND `error_message` IS NULL
+  AND `image_url` IS NOT NULL;
+
+UPDATE `image_generations`
+SET `archive_status` = 'FAILED'
+WHERE `status` = 'SUCCEEDED'
+  AND `hosted_image_url` IS NULL
+  AND `error_message` IS NOT NULL;
+
+CREATE INDEX `image_generations_archive_status_archive_next_run_at_idx`
+  ON `image_generations`(`archive_status`, `archive_next_run_at`);
+
+CREATE INDEX `image_generations_archive_locked_at_idx`
+  ON `image_generations`(`archive_locked_at`);

prisma/schema.prisma

@@ -19,6 +19,14 @@ enum ImageGenerationStatus {
   FAILED
 }
 
+enum ImageArchiveStatus {
+  NOT_REQUIRED
+  PENDING
+  RUNNING
+  SUCCEEDED
+  FAILED
+}
+
 model User {
   id               Int               @id
   username         String            @default("") @db.VarChar(191)
@@ -49,6 +57,12 @@ model ImageGeneration {
   upstreamResponse Json?                 @map("upstream_response")
   hostedResponse   Json?                 @map("hosted_response")
   errorMessage     String?               @map("error_message") @db.Text
+  archiveStatus    ImageArchiveStatus    @default(NOT_REQUIRED) @map("archive_status")
+  archiveAttempts  Int                   @default(0) @map("archive_attempts")
+  archiveNextRunAt DateTime?             @map("archive_next_run_at")
+  archiveLockedAt  DateTime?             @map("archive_locked_at")
+  archiveLockedBy  String?               @map("archive_locked_by") @db.VarChar(191)
+  archiveLastError String?               @map("archive_last_error") @db.Text
   createdAt        DateTime              @default(now()) @map("created_at")
   updatedAt        DateTime              @updatedAt @map("updated_at")
   deletedAt        DateTime?             @map("deleted_at")
@@ -56,6 +70,8 @@ model ImageGeneration {
 
   @@index([userId, createdAt])
   @@index([status])
+  @@index([archiveStatus, archiveNextRunAt])
+  @@index([archiveLockedAt])
   @@index([deletedAt])
   @@map("image_generations")
 }