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