import { ProductImageDeletionService } from './product-image-deletion.service.js';
import {
    Body,
    Controller,
    Headers,
    Inject,
    Get,
    Param,
    Post,
    Query,
    Req,
    Res,
} from '@nestjs/common';
import {
    ApiBearerAuth,
    ApiCreatedResponse,
    ApiOkResponse,
    ApiTags,
} from '@nestjs/swagger';
import {
    deleteProductImageRequestSchema,
    completeMediaUploadIntentRequestSchema,
    createMediaAccessUrlRequestSchema,
    createMediaUploadIntentRequestSchema,
    importProductImageRequestSchema,
    createAspectRatioDerivativeRequestSchema,
    createWatermarkDerivativeRequestSchema,
    createMediaAiEditRequestSchema,
    listProductImageTasksQuerySchema,
    imageSuitePlanInputSchema,
    createImageSuiteSchema,
    type CreateMediaAccessUrlRequest,
    type Workspace,
} from '@atlas/contracts';
import { z } from 'zod';
import { ApiError } from '../common/api-error.js';
import type { AuthenticatedRequest } from '../auth/auth.guard.js';
import { CurrentWorkspace } from '../workspace/current-workspace.decorator.js';
import { MediaService } from './media.service.js';
import { AspectRatioDerivativeService } from './aspect-ratio-derivative.service.js';
import { WatermarkDerivativeService } from './watermark-derivative.service.js';
import { MediaAiEditService } from './media-ai-edit.service.js';
import { ProductImageTaskService } from './product-image-task.service.js';
import { ProductImageDerivativeHistoryService } from './product-image-derivative-history.service.js';
import { ImageSuiteService } from './image-suite.service.js';

@ApiTags('Media')
@ApiBearerAuth('access-token')
@Controller()
export class MediaController {
    public constructor(
        @Inject(ProductImageDeletionService) private readonly imageDeletions: ProductImageDeletionService,
        @Inject(MediaService) private readonly media: MediaService,
        @Inject(AspectRatioDerivativeService) private readonly derivatives: AspectRatioDerivativeService,
        @Inject(WatermarkDerivativeService) private readonly watermarkDerivatives: WatermarkDerivativeService,
        @Inject(MediaAiEditService) private readonly aiEdits: MediaAiEditService,
        @Inject(ProductImageTaskService) private readonly productImageTasks: ProductImageTaskService,
        @Inject(ProductImageDerivativeHistoryService) private readonly derivativeHistory: ProductImageDerivativeHistoryService,
        @Inject(ImageSuiteService) private readonly suites: ImageSuiteService,
    ) {}

    @Post('products/:productId/image-deletions')
    public async deleteProductImage(@Param('productId') productId: string, @Body() body: unknown,
        @Headers('idempotency-key') key: string | undefined, @Req() request: AuthenticatedRequest,
        @CurrentWorkspace() workspace: Workspace, @Res({ passthrough: true }) response: { status: (code: number) => void }) {
        const result = await this.imageDeletions.create(workspace.id, request.auth.userId, uuid('product_id', productId), idempotencyKey(key), parse(deleteProductImageRequestSchema, body));
        response.status(result.status); return result.body;
    }
    @Get('products/:productId/image-deletions')
    public async pendingImageDeletions(@Param('productId') productId: string, @CurrentWorkspace() workspace: Workspace) {
        return { data: await this.imageDeletions.pending(workspace.id, uuid('product_id', productId)) };
    }
    @Get('products/:productId/image-deletions/:deletionId')
    public async readImageDeletion(@Param('productId') productId: string, @Param('deletionId') id: string, @CurrentWorkspace() workspace: Workspace) {
        return { data: await this.imageDeletions.read(workspace.id, uuid('product_id', productId), uuid('deletion_id', id)) };
    }
    @Post('products/:productId/image-deletions/:deletionId/retry')
    public async retryImageDeletion(@Param('productId') productId: string, @Param('deletionId') id: string,
        @Headers('idempotency-key') key: string | undefined, @Req() request: AuthenticatedRequest, @CurrentWorkspace() workspace: Workspace,
        @Res({ passthrough: true }) response: { status: (code: number) => void }) {
        const result = await this.imageDeletions.retry(workspace.id, request.auth.userId, uuid('product_id', productId), uuid('deletion_id', id), idempotencyKey(key));
        response.status(result.status); return result.body;
    }

    @Post('products/:productId/ai/suite-plans')
    public async planSuite(@Param('productId') productId: string, @Body() body: unknown,
        @Headers('idempotency-key') key: string | undefined, @Req() request: AuthenticatedRequest,
        @CurrentWorkspace() workspace: Workspace, @Res({ passthrough: true }) response: { status: (code: number) => void }) {
        const result = await this.suites.create(workspace.id, request.auth.userId, uuid('product_id', productId), idempotencyKey(key), parse(imageSuitePlanInputSchema, body), 'plan');
        response.status(result.status); return result.body;
    }

    @Post('products/:productId/ai/image-suites')
    public async generateSuite(@Param('productId') productId: string, @Body() body: unknown,
        @Headers('idempotency-key') key: string | undefined, @Req() request: AuthenticatedRequest,
        @CurrentWorkspace() workspace: Workspace, @Res({ passthrough: true }) response: { status: (code: number) => void }) {
        const result = await this.suites.create(workspace.id, request.auth.userId, uuid('product_id', productId), idempotencyKey(key), parse(createImageSuiteSchema, body), 'generate');
        response.status(result.status); return result.body;
    }

    @Get('products/:productId/ai/image-suites')
    public async listSuites(@Param('productId') productId: string, @Query() query: unknown, @CurrentWorkspace() workspace: Workspace) {
        return this.suites.list(workspace.id, uuid('product_id', productId), parse(listProductImageTasksQuerySchema, query));
    }

    @Get('products/:productId/ai/image-suites/:suiteId')
    public async readSuite(@Param('productId') productId: string, @Param('suiteId') suiteId: string, @CurrentWorkspace() workspace: Workspace) {
        return { data: await this.suites.read(workspace.id, uuid('product_id', productId), uuid('suite_id', suiteId)) };
    }

    @Post('products/:productId/ai/image-suites/:suiteId/cancel')
    public async cancelSuite(@Param('productId') productId: string, @Param('suiteId') suiteId: string,
        @Headers('idempotency-key') key: string | undefined, @Req() request: AuthenticatedRequest, @CurrentWorkspace() workspace: Workspace) {
        return (await this.suites.action(workspace.id, request.auth.userId, uuid('product_id', productId), uuid('suite_id', suiteId), idempotencyKey(key), 'cancel')).body;
    }

    @Post('products/:productId/ai/image-suites/:suiteId/retry')
    public async retrySuite(@Param('productId') productId: string, @Param('suiteId') suiteId: string,
        @Headers('idempotency-key') key: string | undefined, @Req() request: AuthenticatedRequest, @CurrentWorkspace() workspace: Workspace) {
        return (await this.suites.action(workspace.id, request.auth.userId, uuid('product_id', productId), uuid('suite_id', suiteId), idempotencyKey(key), 'retry')).body;
    }

    @Get('products/:productId/image-derivatives')
    public async listProductImageDerivatives(
        @Param('productId') productId: string,
        @CurrentWorkspace() workspace: Workspace,
    ) {
        return { data: await this.derivativeHistory.list(workspace.id, uuid('product_id', productId)) };
    }

    @Get('products/:productId/image-tasks')
    public async listProductImageTasks(
        @Param('productId') productId: string,
        @CurrentWorkspace() workspace: Workspace,
        @Query() query: unknown,
    ) {
        return this.productImageTasks.list(workspace.id, uuid('product_id', productId),
            parse(listProductImageTasksQuerySchema, query));
    }

    @Post('media-assets/:assetId/ai-edits')
    public async createAiEdit(
        @Param('assetId') assetId: string,
        @Body() body: unknown,
        @Headers('idempotency-key') key: string | undefined,
        @Req() request: AuthenticatedRequest,
        @CurrentWorkspace() workspace: Workspace,
        @Res({ passthrough: true }) response: { status: (code: number) => void },
    ) {
        const result = await this.aiEdits.create(
            workspace.id, request.auth.userId, uuid('asset_id', assetId),
            idempotencyKey(key), parse(createMediaAiEditRequestSchema, body),
        );
        response.status(result.status);
        return result.body;
    }

    @Get('media-ai-edits/:editId')
    public async aiEdit(
        @Param('editId') editId: string,
        @CurrentWorkspace() workspace: Workspace,
    ) {
        return { data: await this.aiEdits.read(workspace.id, uuid('edit_id', editId)) };
    }

    @Get('media-ai-edits')
    public async listAiEdits(
        @Query('product_id') productId: string,
        @CurrentWorkspace() workspace: Workspace,
    ) {
        return { data: await this.aiEdits.list(workspace.id, uuid('product_id', productId)) };
    }

    @Post('media-ai-edits/:editId/cancel')
    public async cancelAiEdit(
        @Param('editId') editId: string,
        @Headers('idempotency-key') key: string | undefined,
        @Req() request: AuthenticatedRequest,
        @CurrentWorkspace() workspace: Workspace,
    ) {
        return (await this.aiEdits.cancel(
            workspace.id, request.auth.userId, uuid('edit_id', editId), idempotencyKey(key),
        )).body;
    }

    @Post('media-assets/:assetId/watermark-derivatives')
    public async createWatermarkDerivative(
        @Param('assetId') assetId: string,
        @Body() body: unknown,
        @Headers('idempotency-key') key: string | undefined,
        @Req() request: AuthenticatedRequest,
        @CurrentWorkspace() workspace: Workspace,
        @Res({ passthrough: true }) response: { status: (code: number) => void },
    ) {
        const result = await this.watermarkDerivatives.create(
            workspace.id,
            request.auth.userId,
            uuid('asset_id', assetId),
            idempotencyKey(key),
            parse(createWatermarkDerivativeRequestSchema, body),
        );
        response.status(result.status);
        return result.body;
    }

    @Get('media-watermark-derivatives/:derivativeId')
    public async watermarkDerivative(
        @Param('derivativeId') derivativeId: string,
        @CurrentWorkspace() workspace: Workspace,
    ) {
        return { data: await this.watermarkDerivatives.read(workspace.id, uuid('derivative_id', derivativeId)) };
    }

    @Post('media-assets/:assetId/aspect-ratio-derivatives')
    public async createAspectRatioDerivative(
        @Param('assetId') assetId: string,
        @Body() body: unknown,
        @Headers('idempotency-key') key: string | undefined,
        @Req() request: AuthenticatedRequest,
        @CurrentWorkspace() workspace: Workspace,
        @Res({ passthrough: true }) response: { status: (code: number) => void },
    ) {
        const result = await this.derivatives.create(
            workspace.id,
            request.auth.userId,
            uuid('asset_id', assetId),
            idempotencyKey(key),
            parse(createAspectRatioDerivativeRequestSchema, body),
        );
        response.status(result.status);
        return result.body;
    }

    @Get('media-derivatives/:derivativeId')
    public async aspectRatioDerivative(
        @Param('derivativeId') derivativeId: string,
        @CurrentWorkspace() workspace: Workspace,
    ) {
        return { data: await this.derivatives.read(workspace.id, uuid('derivative_id', derivativeId)) };
    }

    @Get('media-assets/product-uploads')
    @ApiOkResponse({ description: '当前商品最近上传的图片及短时预览地址' })
    public async productUploads(@CurrentWorkspace() workspace: Workspace, @Query('product_id') productId: string) {
        return { data: await this.media.productUploads(workspace.id, uuid('product_id', productId)) };
    }

    @Get('media-assets/product-imports')
    @ApiOkResponse({ description: '当前商品最近导入的网络图片及短时预览地址' })
    public async productImports(@CurrentWorkspace() workspace: Workspace, @Query('product_id') productId: string) {
        return { data: await this.media.productImports(workspace.id, uuid('product_id', productId)) };
    }

    @Post('media-assets/product-imports')
    @ApiCreatedResponse({ description: '已下载并校验网络图片，创建正式素材' })
    public async importProductImage(
        @Body() body: unknown,
        @Headers('idempotency-key') key: string | undefined,
        @Req() request: AuthenticatedRequest,
        @CurrentWorkspace() workspace: Workspace,
    ) {
        return (await this.media.importProductImage(
            workspace.id,
            request.auth.userId,
            idempotencyKey(key),
            parse(importProductImageRequestSchema, body),
        )).body;
    }

    @Post('media/upload-intents')
    @ApiCreatedResponse({ description: '已创建一次性预签名上传意图' })
    public async createIntent(
        @Body() body: unknown,
        @Headers('idempotency-key') key: string | undefined,
        @Req() request: AuthenticatedRequest,
        @CurrentWorkspace() workspace: Workspace,
    ) {
        return (
            await this.media.createIntent(
                workspace.id,
                request.auth.userId,
                idempotencyKey(key),
                parse(createMediaUploadIntentRequestSchema, body),
            )
        ).body;
    }

    @Post('media/upload-intents/:uploadId/complete')
    @ApiCreatedResponse({ description: '已完成对象安全校验并创建素材' })
    public async complete(
        @Param('uploadId') uploadId: string,
        @Body() body: unknown,
        @Headers('idempotency-key') key: string | undefined,
        @Req() request: AuthenticatedRequest,
        @CurrentWorkspace() workspace: Workspace,
    ) {
        return (
            await this.media.completeIntent(
                workspace.id,
                request.auth.userId,
                uuid('upload_id', uploadId),
                idempotencyKey(key),
                parse(completeMediaUploadIntentRequestSchema, body),
            )
        ).body;
    }

    @Post('media-assets/:assetId/access-urls')
    @ApiOkResponse({ description: '已签发短时预览或下载 URL' })
    public async accessUrl(
        @Param('assetId') assetId: string,
        @Body() body: unknown,
        @CurrentWorkspace() workspace: Workspace,
    ) {
        const input = parse(createMediaAccessUrlRequestSchema, body) as CreateMediaAccessUrlRequest;
        return {
            data: await this.media.accessUrl(
                workspace.id,
                uuid('asset_id', assetId),
                input.purpose,
            ),
        };
    }
}

function parse<
    T extends {
        safeParse: (input: unknown) => {
            success: boolean;
            data?: unknown;
            error?: { issues: Array<{ path: PropertyKey[]; message: string }> };
        };
    },
>(schema: T, input: unknown) {
    const result = schema.safeParse(input);
    if (result.success)
        return result.data as ReturnType<T['safeParse']> extends {
            data: infer Data;
        }
            ? Data
            : never;
    throw new ApiError(
        422,
        'VALIDATION_FAILED',
        '请求参数不符合要求',
        result.error?.issues.map((issue) => ({
            field: issue.path.join('.'),
            code: 'INVALID_FIELD',
            message: issue.message,
        })),
    );
}
function uuid(field: string, value: string) {
    if (z.uuid().safeParse(value).success) return value;
    throw new ApiError(422, 'VALIDATION_FAILED', '请求参数不符合要求', [
        { field, code: 'INVALID_FIELD', message: `${field} 必须是 UUID` },
    ]);
}
function idempotencyKey(value: string | undefined) {
    if (!value)
        throw new ApiError(
            400,
            'IDEMPOTENCY_KEY_REQUIRED',
            '请求缺少 Idempotency-Key',
        );
    return uuid('Idempotency-Key', value);
}