done

2026-06-22 20:48:29 +08:00
parent 48af2df4e2
commit e00eb2c1f8
9 changed files with 1765 additions and 142 deletions
--- a/routes/contracts.js
+++ b/routes/contracts.js
@@ -0,0 +1,220 @@
+// routes/contracts.js —— 合同管理 CRUD
+const { pool } = require('../db')
+
+function pagination(query) {
+  const page = Math.max(Number(query.page) || 1, 1)
+  const pageSize = Math.min(Math.max(Number(query.pageSize) || 10, 1), 100)
+  const offset = (page - 1) * pageSize
+  return { page, pageSize, offset }
+}
+
+// 列表查询时 JOIN 客户名和员工名
+const LIST_SELECT = `
+  SELECT
+    c.*,
+    cu.name AS customer_name,
+    e.name  AS employee_name
+  FROM contracts c
+    LEFT JOIN customers cu ON c.customer_id = cu.id
+    LEFT JOIN employees e  ON c.employee_id = e.id
+`
+
+// 单条查询时用同样的 JOIN
+const DETAIL_SELECT = LIST_SELECT
+
+// GET /api/contracts —— 列表
+async function list(req, res) {
+  try {
+    const { page, pageSize, offset } = pagination(req.query)
+    const { status, customer_name, contract_no, employee_name } = req.query
+
+    let where = 'WHERE 1=1'
+    const params = []
+
+    if (status) {
+      where += ' AND c.status = ?'
+      params.push(status)
+    }
+    if (customer_name) {
+      where += ' AND cu.name LIKE ?'
+      params.push(`%${customer_name}%`)
+    }
+    if (contract_no) {
+      where += ' AND c.contract_no LIKE ?'
+      params.push(`%${contract_no}%`)
+    }
+    if (employee_name) {
+      where += ' AND e.name LIKE ?'
+      params.push(`%${employee_name}%`)
+    }
+
+    const [[{ total }]] = await pool.query(
+      `SELECT COUNT(*) AS total FROM contracts c
+         LEFT JOIN customers cu ON c.customer_id = cu.id
+         LEFT JOIN employees e  ON c.employee_id = e.id
+       ${where}`,
+      params
+    )
+
+    const [rows] = await pool.query(
+      `${LIST_SELECT} ${where} ORDER BY c.id DESC LIMIT ? OFFSET ?`,
+      [...params, pageSize, offset]
+    )
+
+    res.json({
+      code: 0,
+      message: 'ok',
+      data: {
+        list: rows,
+        total,
+        page,
+        pageSize,
+        totalPages: Math.ceil(total / pageSize),
+      },
+    })
+  } catch (e) {
+    console.error('[contracts list] error:', e)
+    res.status(500).json({ code: 500, message: e.message })
+  }
+}
+
+// GET /api/contracts/:id —— 详情
+async function detail(req, res) {
+  try {
+    const [rows] = await pool.query(
+      `${DETAIL_SELECT} WHERE c.id = ?`,
+      [req.params.id]
+    )
+    if (rows.length === 0) {
+      return res.status(404).json({ code: 404, message: '合同不存在' })
+    }
+    res.json({ code: 0, message: 'ok', data: rows[0] })
+  } catch (e) {
+    console.error('[contracts detail] error:', e)
+    res.status(500).json({ code: 500, message: e.message })
+  }
+}
+
+// POST /api/contracts —— 新增
+async function create(req, res) {
+  const {
+    customer_id, contract_name, contract_no, contract_content,
+    amount, effective_date, expiry_date, employee_id, status, remark,
+  } = req.body || {}
+
+  if (!customer_id) {
+    return res.status(400).json({ code: 400, message: '客户ID必填' })
+  }
+  if (!contract_name) {
+    return res.status(400).json({ code: 400, message: '合同名称必填' })
+  }
+
+  try {
+    // 校验客户是否存在
+    const [cust] = await pool.query('SELECT id FROM customers WHERE id = ?', [customer_id])
+    if (cust.length === 0) {
+      return res.status(400).json({ code: 400, message: '关联客户不存在' })
+    }
+    // 校验业务员（如果填了）
+    if (employee_id) {
+      const [emp] = await pool.query('SELECT id FROM employees WHERE id = ?', [employee_id])
+      if (emp.length === 0) {
+        return res.status(400).json({ code: 400, message: '关联业务员不存在' })
+      }
+    }
+
+    const [result] = await pool.query(
+      `INSERT INTO contracts
+         (customer_id, contract_name, contract_no, contract_content, amount, effective_date, expiry_date, employee_id, status, remark)
+       VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+      [customer_id, contract_name,
+        contract_no || null,
+        contract_content || null,
+        amount !== undefined ? amount : null,
+        effective_date || null,
+        expiry_date || null,
+        employee_id || null,
+        status || '生效',
+        remark || null]
+    )
+
+    const [rows] = await pool.query(`${DETAIL_SELECT} WHERE c.id = ?`, [result.insertId])
+    res.json({ code: 0, message: 'ok', data: rows[0] })
+  } catch (e) {
+    console.error('[contracts create] error:', e)
+    res.status(500).json({ code: 500, message: e.message })
+  }
+}
+
+// PUT /api/contracts/:id —— 更新
+async function update(req, res) {
+  const { id } = req.params
+  const fields = [
+    'customer_id', 'contract_name', 'contract_no', 'contract_content',
+    'amount', 'effective_date', 'expiry_date', 'employee_id', 'status', 'remark',
+  ]
+
+  try {
+    const [existing] = await pool.query('SELECT id FROM contracts WHERE id = ?', [id])
+    if (existing.length === 0) {
+      return res.status(404).json({ code: 404, message: '合同不存在' })
+    }
+
+    // 如果更新了 customer_id 或 employee_id，需要校验
+    if (req.body.customer_id) {
+      const [cust] = await pool.query('SELECT id FROM customers WHERE id = ?', [req.body.customer_id])
+      if (cust.length === 0) {
+        return res.status(400).json({ code: 400, message: '关联客户不存在' })
+      }
+    }
+    if (req.body.employee_id) {
+      const [emp] = await pool.query('SELECT id FROM employees WHERE id = ?', [req.body.employee_id])
+      if (emp.length === 0) {
+        return res.status(400).json({ code: 400, message: '关联业务员不存在' })
+      }
+    }
+
+    const sets = []
+    const params = []
+    for (const f of fields) {
+      if (req.body[f] !== undefined) {
+        sets.push(`${f} = ?`)
+        params.push(req.body[f])
+      }
+    }
+    if (sets.length === 0) {
+      return res.status(400).json({ code: 400, message: '没有需要更新的字段' })
+    }
+
+    params.push(id)
+    await pool.query(`UPDATE contracts SET ${sets.join(', ')} WHERE id = ?`, params)
+
+    const [rows] = await pool.query(`${DETAIL_SELECT} WHERE c.id = ?`, [id])
+    res.json({ code: 0, message: 'ok', data: rows[0] })
+  } catch (e) {
+    console.error('[contracts update] error:', e)
+    res.status(500).json({ code: 500, message: e.message })
+  }
+}
+
+// DELETE /api/contracts/:id —— 删除
+async function remove(req, res) {
+  const { id } = req.params
+  try {
+    const [existing] = await pool.query('SELECT id FROM contracts WHERE id = ?', [id])
+    if (existing.length === 0) {
+      return res.status(404).json({ code: 404, message: '合同不存在' })
+    }
+    await pool.query('DELETE FROM contracts WHERE id = ?', [id])
+    res.json({ code: 0, message: 'ok' })
+  } catch (e) {
+    console.error('[contracts delete] error:', e)
+    // 如果因为外键约束（customer_id 被 after_sales 引用）导致删除失败
+    if (e.code === 'ER_ROW_IS_REFERENCED_2') {
+      return res.status(400).json({ code: 400, message: '该合同关联了售后记录，无法删除' })
+    }
+    res.status(500).json({ code: 500, message: e.message })
+  }
+}
+
+module.exports = { list, detail, create, update, remove }