import type { DatabaseClient } from "./database";
import { getRuntimeEnv, isEnabled } from "./runtime-env";
import { sendWecomRobotMessage, type WecomConfig } from "./wecom-client";

type FetchLike = typeof fetch;

export function isWecomFeedbackEnabled() {
  return isEnabled(getRuntimeEnv().WECOM_FEEDBACK_ENABLED, false);
}

type SubmittedRow = {
  claimant_name: string | null;
  partner_name: string | null;
  task_name: string;
  content_title: string | null;
  publish_url: string | null;
};

function truncate(value: string, max: number) {
  return value.length > max ? `${value.slice(0, max)}…` : value;
}

export function buildPublishSubmittedMessage(
  row: SubmittedRow,
  kind: "publish" | "screenshot",
): string {
  const partner = row.partner_name || row.claimant_name || "未知合作方";
  if (kind === "screenshot") {
    return [
      "【KOC 已提交截图】",
      `合作方：${partner}`,
      `任务：${truncate(row.task_name, 24)}`,
      `内容：${truncate(row.content_title ?? "", 24)}`,
      "请到后台「数据回收」页查看与审核。",
    ].join("\n");
  }
  return [
    "【KOC 已提交发布】",
    `合作方：${partner}`,
    `任务：${truncate(row.task_name, 24)}`,
    `内容：${truncate(row.content_title ?? "", 24)}`,
    `链接：${row.publish_url ?? ""}`,
    "链接已入库，采集计划将按日自动执行。",
  ].join("\n");
}

export async function notifyPartnerSubmitted(
  db: DatabaseClient,
  params: { distributionId: string; kind: "publish" | "screenshot" },
  config: WecomConfig,
  fetchImpl: FetchLike = fetch,
): Promise<boolean> {
  if (!config.robotWebhook) return false;
  const distributionId = String(params.distributionId ?? "").trim();
  if (!distributionId) return false;
  const row = await db
    .prepare(
      `SELECT d.claimant_name, d.publish_url, t.name AS task_name,
              c.title AS content_title, p.name AS partner_name
       FROM distributions d
       JOIN tasks t ON t.id = d.task_id
       LEFT JOIN contents c ON c.id = d.content_id
       LEFT JOIN partners p ON p.id = d.partner_id
       WHERE d.id = ?`,
    )
    .bind(distributionId)
    .first<SubmittedRow>();
  if (!row) return false;
  const message = buildPublishSubmittedMessage(row, params.kind);
  await sendWecomRobotMessage(message, config, fetchImpl);
  return true;
}

export function buildCollectionFinishedMessage(summary: {
  currentDate: string;
  dueTasks: number;
  attempted: number;
  succeeded: number;
  failed: number;
}): string {
  const lines = [
    `【数据采集日报】${summary.currentDate}`,
    `应采集任务 ${summary.dueTasks} 个，执行 ${summary.attempted} 条：成功 ${summary.succeeded}、失败 ${summary.failed}。`,
  ];
  if (summary.failed > 0) {
    lines.push("有采集失败，请到后台「数据回收」页查看并重试。");
  }
  return lines.join("\n");
}

export async function notifyCollectionFinished(
  summary: {
    currentDate: string;
    dueTasks: number;
    attempted: number;
    succeeded: number;
    failed: number;
  },
  config: WecomConfig,
  fetchImpl: FetchLike = fetch,
): Promise<boolean> {
  if (!config.robotWebhook) return false;
  if (summary.attempted <= 0 && summary.failed <= 0) return false;
  const message = buildCollectionFinishedMessage(summary);
  await sendWecomRobotMessage(message, config, fetchImpl);
  return true;
}