import assert from "node:assert/strict";
import test from "node:test";
import {
  projectMainChatId,
  deleteProject,
  ensureProjectMainChat,
  effectiveProjectMembers,
  findOrCreateGroupOwnerPartner,
  getProjectDetail,
  listProjects,
  parseMemberIds,
  ProjectError,
  saveGroupOwnerPartner,
  saveProject,
} from "../lib/project-service.ts";
import {
  clearWecomAccessTokenCacheForTests,
  resolveWecomConfig,
} from "../lib/wecom-client.ts";

const baseBindings = {
  WECOM_CORP_ID: "corp-test",
  WECOM_AGENT_ID: "1000001",
  WECOM_SECRET: "secret-test",
};

test.beforeEach(() => {
  clearWecomAccessTokenCacheForTests();
});

function fakeWecom(options = {}) {
  const calls = [];
  const chats = new Map(options.chats ?? []);
  const failCreate = options.failCreate ?? false;
  const failGet = options.failGet ?? false;
  const createExisted = options.createExisted ?? false;
  const fetchImpl = async (input, init = {}) => {
    const url = new URL(String(input));
    calls.push({ url, init });
    if (url.pathname.endsWith("/cgi-bin/gettoken")) {
      return Response.json({
        errcode: 0,
        errmsg: "ok",
        access_token: "token-test",
        expires_in: 7200,
      });
    }
    if (url.pathname.endsWith("/cgi-bin/appchat/create")) {
      if (createExisted) {
        return Response.json({ errcode: 86215, errmsg: "chatid existed" });
      }
      if (failCreate) {
        return Response.json({ errcode: 60111, errmsg: "user not in scope" });
      }
      const body = JSON.parse(String(init.body ?? "{}"));
      chats.set(body.chatid, { name: body.name, userlist: body.userlist });
      return Response.json({ errcode: 0, errmsg: "ok", chatid: body.chatid });
    }
    if (url.pathname.endsWith("/cgi-bin/appchat/update")) {
      const body = JSON.parse(String(init.body ?? "{}"));
      const chat = chats.get(body.chatid);
      if (!chat) {
        return Response.json({ errcode: 60111, errmsg: "chat not found" });
      }
      for (const userid of body.add_user_list ?? []) {
        if (!chat.userlist.includes(userid)) chat.userlist.push(userid);
      }
      for (const userid of body.del_user_list ?? []) {
        chat.userlist = chat.userlist.filter((id) => id !== userid);
      }
      return Response.json({ errcode: 0, errmsg: "ok" });
    }
    if (url.pathname.endsWith("/cgi-bin/appchat/get")) {
      if (failGet) {
        return Response.json({ errcode: 86001, errmsg: "chatid invalid" });
      }
      const body = JSON.parse(String(init.body ?? "{}"));
      const chat = chats.get(body.chatid);
      if (!chat) {
        return Response.json({ errcode: 60111, errmsg: "chat not found" });
      }
      return Response.json({
        errcode: 0,
        errmsg: "ok",
        chat_info: {
          chatid: body.chatid,
          name: chat.name,
          userlist: chat.userlist,
        },
      });
    }
    return new Response("not found", { status: 404 });
  };
  return { calls, fetchImpl, chats };
}

function fakeProjectDb({ projects = [], tasks = [], partners = [] } = {}) {
  const executed = [];
  const applyWrite = (sql, params) => {
    const normalized = sql.trim();
    if (/^INSERT INTO projects/.test(normalized)) {
      projects.push({
        id: params[0],
        name: params[1],
        brand: params[2],
        main_group_member_ids: params[3],
        owner_userid: params[4],
        main_chat_id: "",
        status: "active",
        note: params[5],
        created_at: params[6],
      });
      return 1;
    }
    if (/^UPDATE projects SET main_chat_id/.test(normalized)) {
      const row = projects.find((item) => item.id === params[1]);
      if (row) row.main_chat_id = params[0];
      return row ? 1 : 0;
    }
    if (/^UPDATE projects/.test(normalized)) {
      const row = projects.find((item) => item.id === params[5]);
      if (!row) return 0;
      Object.assign(row, {
        name: params[0],
        brand: params[1],
        main_group_member_ids: params[2],
        owner_userid: params[3],
        note: params[4],
      });
      return 1;
    }
    if (/^DELETE FROM projects/.test(normalized)) {
      const index = projects.findIndex((item) => item.id === params[0]);
      if (index < 0) return 0;
      projects.splice(index, 1);
      return 1;
    }
    if (/^UPDATE tasks SET project_id = ''/.test(normalized)) {
      for (const task of tasks) {
        if (task.project_id === params[0]) task.project_id = "";
      }
      return 1;
    }
    if (/^INSERT INTO partners/.test(normalized)) {
      partners.push({
        id: params[0],
        name: params[1],
        wecom_userid: params[2],
        partner_type: "group_owner",
      });
      return 1;
    }
    if (/^UPDATE partners/.test(normalized)) {
      const row = partners.find((item) => item.id === params[2]);
      if (!row) return 0;
      Object.assign(row, { name: params[0], wecom_userid: params[1] });
      return 1;
    }
    return 1;
  };
  const makeStatement = (sql, params = []) => ({
    sql,
    params,
    bind(...args) {
      return makeStatement(sql, args);
    },
    async run() {
      executed.push({ sql, params });
      return { meta: { changes: applyWrite(sql, params) } };
    },
    async first() {
      executed.push({ sql, params });
      if (/FROM projects WHERE id = \?/.test(sql)) {
        return projects.find((item) => item.id === params[0]) ?? null;
      }
      if (/FROM partners WHERE id = \?/.test(sql)) {
        return partners.find((item) => item.id === params[0]) ?? null;
      }
      if (/partner_type = 'group_owner' AND wecom_userid = \?/.test(sql)) {
        return (
          partners.find(
            (item) =>
              item.partner_type === "group_owner" &&
              item.wecom_userid === params[0],
          ) ?? null
        );
      }
      return null;
    },
    async all() {
      executed.push({ sql, params });
      if (/FROM projects p/.test(sql)) {
        const ownerFiltered = /WHERE p\.owner_userid = \?/.test(sql);
        let rows = projects;
        if (ownerFiltered) {
          rows = rows.filter((item) => item.owner_userid === params[0]);
        }
        return {
          results: rows.map((item) => ({
            ...item,
            task_count: tasks.filter((task) => task.project_id === item.id).length,
          })),
        };
      }
      if (/FROM tasks( t)? WHERE (t\.)?project_id/.test(sql)) {
        return {
          results: tasks
            .filter((task) => task.project_id === params[0])
            .map((task) => ({
              recovery_enabled: 1,
              recovery_due_at: "",
              recovery_submitted: 0,
              ...task,
            })),
        };
      }
      if (/FROM partners/.test(sql)) {
        return { results: partners.map((item) => ({ ...item })) };
      }
      return { results: [] };
    },
  });
  return {
    projects,
    tasks,
    partners,
    executed,
    prepare(sql) {
      return makeStatement(sql);
    },
    async batch(statements) {
      const output = [];
      for (const statement of statements) output.push(await statement.run());
      return output;
    },
  };
}

const projectRow = (overrides = {}) => ({
  id: "proj-1",
  name: "A",
  brand: "",
  main_group_member_ids: "[]",
  owner_userid: "",
  main_chat_id: "",
  status: "active",
  note: "",
  created_at: "2026-08-01",
  ...overrides,
});

test("parseMemberIds accepts lines, arrays and mixed separators, dedupes", () => {
  assert.deepEqual(parseMemberIds("zhangsan\nlisi zhangsan"), ["zhangsan", "lisi"]);
  assert.deepEqual(parseMemberIds(["a", " b ", "a"]), ["a", "b"]);
  assert.deepEqual(parseMemberIds("a，b;c，d"), ["a", "b", "c", "d"]);
  assert.deepEqual(parseMemberIds("  \n  "), []);
});

test("effectiveProjectMembers parses stored JSON and merges owner", () => {
  assert.deepEqual(
    effectiveProjectMembers('["u1","u2"]', "owner-a"),
    ["u1", "u2", "owner-a"],
  );
  assert.deepEqual(effectiveProjectMembers("u1\nu1,u2", ""), ["u1", "u2"]);
  assert.deepEqual(effectiveProjectMembers('["u1"]', "u1"), ["u1"]);
});

test("saveProject inserts with proj- prefixed id and JSON members incl owner", async () => {
  const db = fakeProjectDb();
  const { project, mainChat } = await saveProject(db, {
    name: "暑期焕新",
    brand: "青柠实验室",
    mainGroupMemberIds: "zhangsan\nlisi\nzhangsan",
    ownerUserid: "owner-zhang",
    note: "备注",
  });
  assert.match(project.id, /^proj-/);
  assert.equal(project.name, "暑期焕新");
  assert.equal(project.ownerUserid, "owner-zhang");
  assert.deepEqual(project.mainGroupMemberIds, ["zhangsan", "lisi", "owner-zhang"]);
  assert.equal(db.projects.length, 1);
  assert.equal(db.projects[0].status, "active");
  assert.deepEqual(JSON.parse(db.projects[0].main_group_member_ids), [
    "zhangsan",
    "lisi",
    "owner-zhang",
  ]);
  assert.equal(mainChat.reason, "no_credentials", "no config → lazy chat");
});

test("saveProject updates existing row and rejects blank name", async () => {
  const db = fakeProjectDb({
    projects: [projectRow({ id: "proj-1", name: "旧名" })],
  });
  await saveProject(db, {
    id: "proj-1",
    name: "新名",
    brand: "品牌",
    mainGroupMemberIds: ["wangwu"],
    ownerUserid: "owner-li",
  });
  assert.equal(db.projects[0].name, "新名");
  assert.equal(db.projects[0].brand, "品牌");
  assert.equal(db.projects[0].owner_userid, "owner-li");
  assert.deepEqual(JSON.parse(db.projects[0].main_group_member_ids), [
    "wangwu",
    "owner-li",
  ]);
  assert.equal(db.projects.length, 1, "update must not insert");

  await assert.rejects(
    () => saveProject(db, { id: "proj-1", name: "  " }),
    (error) => error instanceof ProjectError && error.status === 400,
  );
});

test("saveProject rejects unknown id on update", async () => {
  const db = fakeProjectDb();
  await assert.rejects(
    () => saveProject(db, { id: "proj-404", name: "x" }),
    (error) => error instanceof ProjectError && error.status === 404,
  );
});

test("saveProject with config creates main chat once members reach 3", async () => {
  const db = fakeProjectDb();
  const wecom = fakeWecom();
  const { project, mainChat } = await saveProject(
    db,
    {
      name: "满三人群",
      mainGroupMemberIds: "u1\nu2",
      ownerUserid: "owner-a",
    },
    resolveWecomConfig(baseBindings),
    wecom.fetchImpl,
  );
  assert.equal(mainChat.chatId, projectMainChatId(project.id));
  assert.equal(mainChat.reason, undefined);
  assert.equal(db.projects[0].main_chat_id, projectMainChatId(project.id));
  const createBody = JSON.parse(
    String(
      wecom.calls.find((c) => c.url.pathname.endsWith("/cgi-bin/appchat/create"))
        .init.body,
    ),
  );
  assert.equal(createBody.chatid, projectMainChatId(project.id));
  assert.deepEqual(createBody.userlist.sort(), ["owner-a", "u1", "u2"]);
});

test("listProjects aggregates task counts and exposes mainChatId", async () => {
  const db = fakeProjectDb({
    projects: [
      projectRow({
        id: "proj-1",
        main_group_member_ids: '["u1","u2"]',
        main_chat_id: "pgcproj1",
      }),
    ],
    tasks: [
      { id: "t1", project_id: "proj-1" },
      { id: "t2", project_id: "proj-1" },
      { id: "t3", project_id: "" },
    ],
  });
  const projects = await listProjects(db);
  assert.equal(projects.length, 1);
  assert.equal(projects[0].taskCount, 2);
  assert.equal(projects[0].mainChatId, "pgcproj1");
  assert.deepEqual(projects[0].mainGroupMemberIds, ["u1", "u2"]);
});

test("listProjects filters by project owner when ownerUserid given", async () => {
  const db = fakeProjectDb({
    projects: [
      projectRow({ id: "proj-1", owner_userid: "owner-a" }),
      projectRow({ id: "proj-2", owner_userid: "owner-b" }),
      projectRow({ id: "proj-3", owner_userid: "" }),
    ],
  });
  const mine = await listProjects(db, "owner-a");
  assert.deepEqual(
    mine.map((item) => item.id),
    ["proj-1"],
  );
  const unbound = await listProjects(db, "");
  assert.deepEqual(
    unbound,
    [],
    "已登录未绑定企微的空范围不应漏出无主项目",
  );
  const all = await listProjects(db);
  assert.equal(all.length, 3);
});

test("getProjectDetail returns tasks with owner and mainChat members", async () => {
  const db = fakeProjectDb({
    projects: [
      projectRow({
        id: "proj-1",
        main_group_member_ids: '["u1"]',
        owner_userid: "owner-a",
        main_chat_id: "pgcproj1",
      }),
    ],
    tasks: [
      {
        id: "t1",
        name: "任务一",
        project_id: "proj-1",
        owner_userid: "owner-a",
        task_chat_id: "tgc_t1",
        recovery_enabled: 0,
        recovery_due_at: "2026-08-10",
        recovery_submitted: 2,
      },
    ],
  });
  const detail = await getProjectDetail(db, "proj-1");
  assert.equal(detail.project.taskCount, 1);
  assert.equal(detail.project.mainChatId, "pgcproj1");
  assert.equal(detail.tasks[0].owner_userid, "owner-a");
  assert.equal(detail.tasks[0].task_chat_id, "tgc_t1");
  assert.equal(detail.tasks[0].recovery_enabled, 0);
  assert.equal(detail.tasks[0].recovery_due_at, "2026-08-10");
  assert.equal(detail.tasks[0].recovery_submitted, 2);
  assert.equal(detail.mainChat.chatId, "pgcproj1");
  assert.deepEqual(detail.mainChat.members, ["u1", "owner-a"]);
});

test("getProjectDetail throws 404 for unknown project", async () => {
  const db = fakeProjectDb();
  await assert.rejects(
    () => getProjectDetail(db, "proj-404"),
    (error) => error instanceof ProjectError && error.status === 404,
  );
});

test("deleteProject unlinks tasks", async () => {
  const db = fakeProjectDb({
    projects: [projectRow({ id: "proj-1" })],
    tasks: [
      { id: "t1", project_id: "proj-1" },
      { id: "t2", project_id: "proj-2" },
    ],
  });
  await deleteProject(db, "proj-1");
  assert.equal(db.projects.length, 0);
  assert.equal(db.tasks[0].project_id, "");
  assert.equal(db.tasks[1].project_id, "proj-2");

  await assert.rejects(
    () => deleteProject(db, "proj-404"),
    (error) => error instanceof ProjectError && error.status === 404,
  );
});

test("ensureProjectMainChat returns no_project for unknown ids", async () => {
  const wecom = fakeWecom();
  const db = fakeProjectDb();
  const result = await ensureProjectMainChat(
    db,
    "proj-404",
    resolveWecomConfig(baseBindings),
    wecom.fetchImpl,
  );
  assert.equal(result.reason, "no_project");
  assert.equal(result.chatId, null);
});

test("ensureProjectMainChat skips without app credentials", async () => {
  const wecom = fakeWecom();
  const db = fakeProjectDb({
    projects: [projectRow({ main_group_member_ids: '["u1","u2","u3"]' })],
  });
  const result = await ensureProjectMainChat(
    db,
    "proj-1",
    resolveWecomConfig({ ...baseBindings, WECOM_SECRET: "" }),
    wecom.fetchImpl,
  );
  assert.equal(result.reason, "no_credentials");
  assert.equal(result.chatId, null);
  assert.equal(wecom.calls.length, 0);
});

test("ensureProjectMainChat skips creation when fewer than 3 members", async () => {
  const wecom = fakeWecom();
  const db = fakeProjectDb({
    projects: [projectRow({ main_group_member_ids: '["u1","u2"]' })],
  });
  const result = await ensureProjectMainChat(
    db,
    "proj-1",
    resolveWecomConfig(baseBindings),
    wecom.fetchImpl,
  );
  assert.equal(result.reason, "not_enough_members");
  assert.equal(result.chatId, null);
  assert.equal(db.projects[0].main_chat_id, "");
  assert.equal(
    wecom.calls.filter((c) => c.url.pathname.endsWith("/cgi-bin/appchat/create"))
      .length,
    0,
  );
});

test("ensureProjectMainChat probes before creating and persists chat id", async () => {
  const wecom = fakeWecom();
  const db = fakeProjectDb({
    projects: [
      projectRow({
        name: "项目一",
        main_group_member_ids: '["u1","u2"]',
        owner_userid: "owner-a",
      }),
    ],
  });
  const result = await ensureProjectMainChat(
    db,
    "proj-1",
    resolveWecomConfig(baseBindings),
    wecom.fetchImpl,
  );
  assert.equal(result.chatId, "pgcproj1");
  assert.deepEqual(result.members.sort(), ["owner-a", "u1", "u2"]);
  assert.equal(db.projects[0].main_chat_id, "pgcproj1");
  const paths = wecom.calls.map((c) => c.url.pathname);
  assert.ok(paths.some((p) => p.endsWith("/cgi-bin/appchat/get")), "probe first");
  assert.ok(paths.some((p) => p.endsWith("/cgi-bin/appchat/create")));
  assert.ok(
    paths.indexOf(paths.find((p) => p.endsWith("/cgi-bin/appchat/get"))) <
      paths.indexOf(paths.find((p) => p.endsWith("/cgi-bin/appchat/create"))),
    "probe precedes create",
  );
});

test("ensureProjectMainChat is idempotent when chat already exists remotely", async () => {
  const wecom = fakeWecom({
    chats: [["pgcproj1", { name: "【总群】项目一", userlist: ["u1", "u2", "owner-a"] }]],
  });
  const db = fakeProjectDb({
    projects: [
      projectRow({
        name: "项目一",
        main_group_member_ids: '["u1","u2"]',
        owner_userid: "owner-a",
      }),
    ],
  });
  const result = await ensureProjectMainChat(
    db,
    "proj-1",
    resolveWecomConfig(baseBindings),
    wecom.fetchImpl,
  );
  assert.equal(result.chatId, "pgcproj1");
  assert.equal(db.projects[0].main_chat_id, "pgcproj1", "id persisted on recovery");
  assert.equal(
    wecom.calls.filter((c) => c.url.pathname.endsWith("/cgi-bin/appchat/create"))
      .length,
    0,
    "no duplicate create",
  );
});

test("ensureProjectMainChat diffs members add and del on existing chat", async () => {
  const wecom = fakeWecom({
    chats: [["pgcproj1", { name: "【总群】项目一", userlist: ["u1", "gone-user"] }]],
  });
  const db = fakeProjectDb({
    projects: [
      projectRow({
        main_group_member_ids: '["u1","u2"]',
        owner_userid: "owner-a",
        main_chat_id: "pgcproj1",
      }),
    ],
  });
  const result = await ensureProjectMainChat(
    db,
    "proj-1",
    resolveWecomConfig(baseBindings),
    wecom.fetchImpl,
  );
  assert.equal(result.chatId, "pgcproj1");
  const updateBody = JSON.parse(
    String(
      wecom.calls.find((c) => c.url.pathname.endsWith("/cgi-bin/appchat/update"))
        .init.body,
    ),
  );
  assert.deepEqual(updateBody.add_user_list.sort(), ["owner-a", "u2"]);
  assert.deepEqual(updateBody.del_user_list, ["gone-user"]);
});

test("ensureProjectMainChat reports warning and keeps main_chat_id empty on create failure", async () => {
  const wecom = fakeWecom({ failCreate: true });
  const db = fakeProjectDb({
    projects: [projectRow({ main_group_member_ids: '["u1","u2","u3"]' })],
  });
  const result = await ensureProjectMainChat(
    db,
    "proj-1",
    resolveWecomConfig(baseBindings),
    wecom.fetchImpl,
  );
  assert.equal(result.chatId, null);
  assert.match(result.warning, /创建失败/);
  assert.equal(db.projects[0].main_chat_id, "", "chat id not persisted on failure");
});

test("ensureProjectMainChat adopts chat when create reports chatid existed", async () => {
  // 可见范围非根部门时 appchat/get 永远 86001，但群实际已建过（create 返回 86215）
  const wecom = fakeWecom({ failGet: true, createExisted: true });
  const db = fakeProjectDb({
    projects: [
      projectRow({
        name: "项目一",
        main_group_member_ids: '["u1","u2"]',
        owner_userid: "owner-a",
      }),
    ],
  });
  const result = await ensureProjectMainChat(
    db,
    "proj-1",
    resolveWecomConfig(baseBindings),
    wecom.fetchImpl,
  );
  assert.equal(result.chatId, "pgcproj1");
  assert.equal(result.warning, undefined);
  assert.equal(db.projects[0].main_chat_id, "pgcproj1", "existing chat id adopted");
});

test("ensureProjectMainChat falls back to add-only sync when get is unavailable", async () => {
  const wecom = fakeWecom({
    failGet: true,
    chats: [["pgcproj1", { name: "【总群】项目一", userlist: ["u1", "gone-user"] }]],
  });
  const db = fakeProjectDb({
    projects: [
      projectRow({
        main_group_member_ids: '["u1","u2"]',
        owner_userid: "owner-a",
        main_chat_id: "pgcproj1",
      }),
    ],
  });
  const result = await ensureProjectMainChat(
    db,
    "proj-1",
    resolveWecomConfig(baseBindings),
    wecom.fetchImpl,
  );
  assert.equal(result.chatId, "pgcproj1");
  assert.equal(result.warning, undefined);
  const updateBody = JSON.parse(
    String(
      wecom.calls.find((c) => c.url.pathname.endsWith("/cgi-bin/appchat/update"))
        .init.body,
    ),
  );
  assert.deepEqual(updateBody.add_user_list.sort(), ["owner-a", "u1", "u2"]);
  assert.equal(updateBody.del_user_list, undefined, "no removals without member list");
});

test("saveGroupOwnerPartner inserts and updates group_owner partners", async () => {
  const db = fakeProjectDb();
  const created = await saveGroupOwnerPartner(db, {
    name: "张三",
    wecomUserid: "zhangsan",
  });
  assert.match(created.id, /^partner-go-/);
  assert.equal(db.partners[0].partner_type, "group_owner");

  const updated = await saveGroupOwnerPartner(db, {
    id: created.id,
    name: "张三丰",
    wecomUserid: "zhangsanfeng",
  });
  assert.equal(updated.name, "张三丰");
  assert.equal(db.partners.length, 1);

  await assert.rejects(
    () => saveGroupOwnerPartner(db, { name: "李四", wecomUserid: "" }),
    (error) => error instanceof ProjectError,
  );
});

test("findOrCreateGroupOwnerPartner returns existing row without duplicating", async () => {
  const db = fakeProjectDb({
    partners: [
      { id: "partner-go-old", name: "负责人", wecom_userid: "owner-a", partner_type: "group_owner" },
    ],
  });
  const found = await findOrCreateGroupOwnerPartner(db, "owner-a");
  assert.equal(found.id, "partner-go-old");
  assert.equal(db.partners.length, 1);
});

test("findOrCreateGroupOwnerPartner creates partner with userid fallback name", async () => {
  const db = fakeProjectDb();
  const created = await findOrCreateGroupOwnerPartner(db, "owner-b");
  assert.match(created.id, /^partner-go-/);
  assert.equal(created.name, "owner-b");
  assert.equal(created.wecom_userid, "owner-b");
  assert.equal(db.partners.length, 1);
});