// FILE: src/routes/contracts.js
// ไม่มี contract.* ใน seed → map เป็นงานดูแลองค์กร/โปรเจ็กต์:
// list/get → projects.view (ORG)
// create/update/delete → projects.manage (ORG)
import { Router } from "express";
import sql from "../db/index.js";
import { requirePerm } from "../middleware/requirePerm.js";

const r = Router();

// LIST
r.get(
  "/",
  requirePerm("projects.view", { orgParam: "org_id" }),
  async (req, res) => {
    const {
      project_id,
      org_id,
      contract_no,
      q,
      limit = 50,
      offset = 0,
    } = req.query;
    const p = req.principal;
    const params = [];
    const cond = [];
    if (!p.is_superadmin) {
      if (org_id) {
        if (!p.inOrg(Number(org_id)))
          return res.status(403).json({ error: "FORBIDDEN_ORG" });
        cond.push("c.org_id=?");
        params.push(Number(org_id));
      } else if (p.org_ids?.length) {
        cond.push(`c.org_id IN (${p.org_ids.map(() => "?").join(",")})`);
        params.push(...p.org_ids);
      }
    } else if (org_id) {
      cond.push("c.org_id=?");
      params.push(Number(org_id));
    }

    if (project_id) {
      cond.push("c.project_id=?");
      params.push(Number(project_id));
    }
    if (contract_no) {
      cond.push("c.contract_no=?");
      params.push(contract_no);
    }
    if (q) {
      cond.push("(c.contract_no LIKE ? OR c.title LIKE ?)");
      params.push(`%${q}%`, `%${q}%`);
    }

    const where = cond.length ? `WHERE ${cond.join(" AND ")}` : "";
    const [rows] = await sql.query(
      `SELECT c.* FROM contracts c ${where} ORDER BY c.id DESC LIMIT ? OFFSET ?`,
      [...params, Number(limit), Number(offset)]
    );
    res.json(rows);
  }
);

// GET
r.get(
  "/:id",
  requirePerm("projects.view", { orgParam: "org_id" }),
  async (req, res) => {
    const id = Number(req.params.id);
    const [[row]] = await sql.query("SELECT * FROM contracts WHERE id=?", [id]);
    if (!row) return res.status(404).json({ error: "Not found" });
    const p = req.principal;
    if (!p.is_superadmin && !p.inOrg(row.org_id))
      return res.status(403).json({ error: "FORBIDDEN_ORG" });
    res.json(row);
  }
);

// CREATE
r.post(
  "/",
  requirePerm("projects.manage", { orgParam: "org_id" }),
  async (req, res) => {
    const { org_id, project_id, contract_no, title, status } = req.body || {};
    if (!org_id || !project_id || !contract_no)
      return res
        .status(400)
        .json({ error: "org_id, project_id, contract_no required" });
    const [rs] = await sql.query(
      `INSERT INTO contracts (org_id, project_id, contract_no, title, status, created_by) VALUES (?,?,?,?,?,?)`,
      [
        org_id,
        project_id,
        contract_no,
        title || null,
        status || null,
        req.principal.user_id,
      ]
    );
    res.json({ id: rs.insertId });
  }
);

// UPDATE
r.put(
  "/:id",
  requirePerm("projects.manage", { orgParam: "org_id" }),
  async (req, res) => {
    const id = Number(req.params.id);
    const [[row]] = await sql.query("SELECT * FROM contracts WHERE id=?", [id]);
    if (!row) return res.status(404).json({ error: "Not found" });
    const p = req.principal;
    if (!p.is_superadmin && !p.inOrg(row.org_id))
      return res.status(403).json({ error: "FORBIDDEN_ORG" });
    const { title, status } = req.body || {};
    await sql.query("UPDATE contracts SET title=?, status=? WHERE id=?", [
      title ?? row.title,
      status ?? row.status,
      id,
    ]);
    res.json({ ok: 1 });
  }
);

// DELETE
r.delete(
  "/:id",
  requirePerm("projects.manage", { orgParam: "org_id" }),
  async (req, res) => {
    const id = Number(req.params.id);
    const [[row]] = await sql.query("SELECT * FROM contracts WHERE id=?", [id]);
    if (!row) return res.status(404).json({ error: "Not found" });
    const p = req.principal;
    if (!p.is_superadmin && !p.inOrg(row.org_id))
      return res.status(403).json({ error: "FORBIDDEN_ORG" });
    await sql.query("DELETE FROM contracts WHERE id=?", [id]);
    res.json({ ok: 1 });
  }
);

export default r;