// server/api/images/history/[id].delete.ts - 生图历史删除接口：软删除当前用户的单条记录。
import {
  clearNewApiAuthCookies,
  createApiLogger,
  createErrorResponse,
  createSuccessResponse,
  createUpstreamErrorResponse,
  getNewApiUserIdFromCookie,
  isUnauthorizedError,
  softDeleteImageGeneration,
  toSafeLogError
} from "~~/server/utils";

/**
 * DELETE /api/images/history/:id
 *
 * 流程：
 * 1. 从 httpOnly cookie 读取当前用户 ID。
 * 2. 校验路由参数 id 必须是数字。
 * 3. 只软删除当前用户且未删除的记录，避免越权删除其他用户历史。
 * 4. 找不到记录时返回 404，数据库中保留原始记录和 deletedAt。
 */
export default defineEventHandler(async (event) => {
  const logger = createApiLogger("images.history.delete");
  logger.info("开始");

  try {
    const userId = getNewApiUserIdFromCookie(event);
    const recordId = parseRecordId(getRouterParam(event, "id"));

    logger.info("删除参数", {
      userId,
      recordId: recordId.toString()
    });

    const deleted = await softDeleteImageGeneration(userId, recordId);

    if (!deleted) {
      logger.warn("记录不存在", {
        userId,
        recordId: recordId.toString()
      });
      return createErrorResponse(404, "生图记录不存在");
    }

    logger.done("成功", {
      userId,
      recordId: recordId.toString()
    });

    return createSuccessResponse(null, "删除生图记录成功");
  } catch (error) {
    if (isUnauthorizedError(error)) {
      clearNewApiAuthCookies(event);
      logger.warn("未登录或登录态失效", {
        error: toSafeLogError(error)
      });
      return createErrorResponse(401, "未登录");
    }

    logger.error("失败", {
      error: toSafeLogError(error)
    });
    return createUpstreamErrorResponse(error, "删除生图记录失败");
  }
});

/** 校验并解析路由里的生图记录 ID */
const parseRecordId = (value: string | undefined): bigint => {
  if (!value || !/^\d+$/.test(value)) {
    throw createError({
      statusCode: 400,
      statusMessage: "生图记录 ID 不正确"
    });
  }

  return BigInt(value);
};