import type {
    CreateWatermarkTemplateRequest,
    UpdateWatermarkTemplateRequest,
    WatermarkFont,
    WatermarkTemplate,
} from '@atlas/contracts';
import { api } from '@/services/api';
import type { CursorPaginationMeta } from '@atlas/contracts';

export interface WatermarkListResult {
    data: WatermarkTemplate[];
    meta: CursorPaginationMeta;
}

export interface UpdateWatermarkOptions {
    /** 提交时的乐观锁版本，取自模板 revision */
    revision: number;
}

/**
 * 水印模板接口，契约见 docs/api/watermarks-and-assets.md §2/§3。
 * 列表/详情的图片模板携带短时 preview_url，过期后重新读取即可。
 */
export const watermarksApi = {
    /** 渲染服务已部署的可用字体；字体 code 是模板的稳定保存值 */
    fonts: () => api.get<WatermarkFont[]>('/watermark-fonts'),

    list: (cursor?: string) =>
        api.getList<WatermarkTemplate, CursorPaginationMeta>('/watermark-templates', {
            params: { limit: 100, ...(cursor ? { cursor } : {}) },
        }),

    get: (templateId: string) => api.get<WatermarkTemplate>(`/watermark-templates/${templateId}`),

    create: (payload: CreateWatermarkTemplateRequest) =>
        api.post<WatermarkTemplate>('/watermark-templates', payload, {
            headers: { 'Idempotency-Key': crypto.randomUUID() },
        }),

    /** 渲染参数变更由服务端创建不可变版本并递增 current_version；仅改名不创建版本 */
    update: (
        templateId: string,
        payload: UpdateWatermarkTemplateRequest,
        options: UpdateWatermarkOptions
    ) =>
        api.patch<WatermarkTemplate>(`/watermark-templates/${templateId}`, payload, {
            headers: {
                'If-Match': `"${options.revision}"`,
                'Idempotency-Key': crypto.randomUUID(),
            },
        }),

    /** 软删除并解除所有店铺绑定，返回 204 */
    remove: (templateId: string) =>
        api.delete<void>(`/watermark-templates/${templateId}`, {
            headers: { 'Idempotency-Key': crypto.randomUUID() },
        }),
};