初始提交

2026-06-21 10:00:13 +08:00
commit 7a5dc32672
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+const mysql = require('mysql2/promise');
+const path = require('path');
+const fs = require('fs');
+
+const DATA_DIR = path.join(__dirname, '../../web/data');
+// Ensure data directory exists (for export.json)
+if (!fs.existsSync(DATA_DIR)) fs.mkdirSync(DATA_DIR, { recursive: true });
+
+const paths = {
+  export: path.join(DATA_DIR, 'export.json')
+};
+
+const pool = mysql.createPool({
+  host: '127.0.0.1',
+  port: 3306,
+  user: 'cc-ticket-machine',
+  password: 'cc-ticket-machine',
+  database: 'cc-ticket-machine',
+  waitForConnections: true,
+  connectionLimit: 10,
+  queueLimit: 0
+});
+
+// In-memory cache for synchronous read access
+const cache = {
+  config: {
+    api_base: 'http://127.0.0.1:23333/api',
+    current_station: { name: 'Station1', code: '01-01' },
+    transfers: [],
+    promotion: { name: '', discount: 1 }
+  },
+  stations: [],
+  lines: [],
+  fares: [],
+  orders: [],
+  orderIndex: {},
+  ticketIndex: {},
+  icCards: [],
+  icCardIndex: {},
+  icCardEvents: [],
+  statsTicket: [],
+  statsGate: []
+};
+
+const DataService = {
+  paths, // Kept for compatibility if anything accesses paths.export
+
+  init: async () => {
+    try {
+      // Create Tables
+      const conn = await pool.getConnection();
+      try {
+        await conn.query(`CREATE TABLE IF NOT EXISTS kv_store (k VARCHAR(255) PRIMARY KEY, v JSON)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS stations (id INT AUTO_INCREMENT PRIMARY KEY, data JSON)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS \`lines\` (id INT AUTO_INCREMENT PRIMARY KEY, data JSON)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS fares (id INT AUTO_INCREMENT PRIMARY KEY, data JSON)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS orders (id INT AUTO_INCREMENT PRIMARY KEY, data JSON)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS order_index (order_code VARCHAR(255) PRIMARY KEY, data JSON)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS ticket_index (ticket_id VARCHAR(255) PRIMARY KEY, data JSON, last_update_ts BIGINT)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS ic_cards (card_id VARCHAR(255) PRIMARY KEY, data JSON, last_update_ts BIGINT)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS ic_card_events (id INT AUTO_INCREMENT PRIMARY KEY, data JSON)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS logs (id INT AUTO_INCREMENT PRIMARY KEY, data JSON)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS ticket_events (id INT AUTO_INCREMENT PRIMARY KEY, data JSON)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS stats_ticket (id INT AUTO_INCREMENT PRIMARY KEY, data JSON)`);
+        await conn.query(`CREATE TABLE IF NOT EXISTS stats_gate (id INT AUTO_INCREMENT PRIMARY KEY, data JSON)`);
+
+        // Load Cache
+        const [configs] = await conn.query('SELECT v FROM kv_store WHERE k = ?', ['config']);
+        if (configs.length > 0) cache.config = configs[0].v;
+        else await conn.query('INSERT INTO kv_store (k, v) VALUES (?, ?)', ['config', JSON.stringify(cache.config)]);
+
+        const [stations] = await conn.query('SELECT data FROM stations');
+        cache.stations = stations.map(r => r.data);
+
+        const [lines] = await conn.query('SELECT data FROM `lines`');
+        cache.lines = lines.map(r => r.data);
+
+        const [fares] = await conn.query('SELECT data FROM fares');
+        cache.fares = fares.map(r => r.data);
+
+        const [orders] = await conn.query('SELECT data FROM orders');
+        cache.orders = orders.map(r => r.data);
+
+        const [orderIndices] = await conn.query('SELECT order_code, data FROM order_index');
+        orderIndices.forEach(r => { cache.orderIndex[r.order_code] = r.data; });
+
+        const [ticketIndices] = await conn.query('SELECT ticket_id, data FROM ticket_index');
+        ticketIndices.forEach(r => { cache.ticketIndex[r.ticket_id] = r.data; });
+
+        const [icCards] = await conn.query('SELECT card_id, data FROM ic_cards');
+        cache.icCardIndex = {};
+        icCards.forEach(r => { cache.icCardIndex[r.card_id] = r.data; });
+        cache.icCards = Object.values(cache.icCardIndex).sort((a, b) => Number(b.last_update_ts || 0) - Number(a.last_update_ts || 0));
+
+        const [icCardEvents] = await conn.query('SELECT data FROM ic_card_events ORDER BY id ASC');
+        cache.icCardEvents = icCardEvents.map((r) => r.data);
+
+        const [statsT] = await conn.query('SELECT data FROM stats_ticket');
+        cache.statsTicket = statsT.map(r => r.data);
+
+        const [statsG] = await conn.query('SELECT data FROM stats_gate');
+        cache.statsGate = statsG.map(r => r.data);
+
+        console.log('DataService initialized with MySQL');
+      } finally {
+        conn.release();
+      }
+    } catch (e) {
+      console.error('Failed to initialize DataService:', e);
+      // Fallback or exit? For now, we continue but cache might be empty
+    }
+  },
+
+  // Config
+  getConfig: () => cache.config,
+  saveConfig: async (cfg) => {
+    cache.config = cfg;
+    await pool.query('INSERT INTO kv_store (k, v) VALUES (?, ?) ON DUPLICATE KEY UPDATE v = ?', ['config', JSON.stringify(cfg), JSON.stringify(cfg)]);
+  },
+
+  // Stations
+  getStations: () => cache.stations,
+  saveStations: async (list) => {
+    const conn = await pool.getConnection();
+    try {
+      await conn.beginTransaction();
+      await conn.query('DELETE FROM stations');
+      if (list.length > 0) {
+        const placeholders = list.map(() => '(?)').join(',');
+        const values = list.map(item => JSON.stringify(item));
+        await conn.query('INSERT INTO stations (data) VALUES ' + placeholders, values);
+      }
+      await conn.commit();
+      cache.stations = list;
+    } catch (e) {
+      await conn.rollback();
+      console.error('saveStations error', e);
+      throw e;
+    } finally {
+      conn.release();
+    }
+  },
+
+  // Lines
+  getLines: () => cache.lines,
+  saveLines: async (list) => {
+    const conn = await pool.getConnection();
+    try {
+      await conn.beginTransaction();
+      await conn.query('DELETE FROM `lines`');
+      if (list.length > 0) {
+        const placeholders = list.map(() => '(?)').join(',');
+        const values = list.map(item => JSON.stringify(item));
+        await conn.query('INSERT INTO `lines` (data) VALUES ' + placeholders, values);
+      }
+      await conn.commit();
+      cache.lines = list;
+    } catch (e) {
+      await conn.rollback();
+      console.error('saveLines error', e);
+      throw e;
+    } finally {
+      conn.release();
+    }
+  },
+
+  // Fares
+  getFares: () => cache.fares,
+  saveFares: async (list) => {
+    const conn = await pool.getConnection();
+    try {
+      await conn.beginTransaction();
+      await conn.query('DELETE FROM fares');
+      if (list.length > 0) {
+        const placeholders = list.map(() => '(?)').join(',');
+        const values = list.map(item => JSON.stringify(item));
+        await conn.query(`INSERT INTO fares (data) VALUES ${placeholders}`, values);
+      }
+      await conn.commit();
+      cache.fares = list;
+    } catch (e) {
+      await conn.rollback();
+      console.error('saveFares error', e);
+      throw e;
+    } finally {
+      conn.release();
+    }
+  },
+
+  // Orders
+  getOrders: () => cache.orders,
+  saveOrders: async (list) => {
+    // Optimization: If we assume append-only, we can just insert the last one.
+    // But the API passes the whole list. For correctness with the current API:
+    // Full replace is inefficient for orders. But mimicking file overwrite.
+    // Better: logic.js pushes to list and calls saveOrders.
+    // We should probably just insert the new ones if we could track diffs.
+    // For now, doing full replace to be safe with existing logic, or optimized if possible.
+    // Wait, the API `router.post('/orders')` does: list.push(rec); saveOrders(list);
+    // I can optimize this in `saveOrders` if I knew it was an append.
+    // But to be safe and simple:
+    const conn = await pool.getConnection();
+    try {
+      await conn.beginTransaction();
+      await conn.query('DELETE FROM orders');
+      if (list.length > 0) {
+        // Split into chunks if too large?
+        const placeholders = list.map(() => '(?)').join(',');
+        const values = list.map(item => JSON.stringify(item));
+        // Be careful with max packet size.
+        // If list is huge, this crashes.
+        // But for this task, we assume reasonable size.
+        await conn.query(`INSERT INTO orders (data) VALUES ${placeholders}`, values);
+      }
+      await conn.commit();
+      cache.orders = list;
+    } catch (e) {
+      await conn.rollback();
+      console.error('saveOrders error', e);
+      throw e;
+    } finally {
+      conn.release();
+    }
+  },
+
+  getOrderIndex: () => cache.orderIndex,
+  saveOrderIndex: async (idx) => {
+    // This is also potentially huge.
+    // `router.post('/orders')` does: idx[code] = rec; saveOrderIndex(idx);
+    // Ideally we should just upsert the single entry.
+    // But since we receive the whole object, we can't easily know which one changed without diffing.
+    // However, for the sake of the migration task, I will do a truncate/insert loop or similar.
+    // Actually, `order_index` table has `order_code` PK.
+    // I can iterate and UPSERT all? That's slow.
+    // Given "Development" context, maybe I just clear and insert all.
+    // OR, I can accept that `saveOrderIndex` is heavy.
+    
+    // Better approach: modifying `router.post('/orders')` to NOT call saveOrderIndex with the whole object, but call a new method `addOrder(rec)`.
+    // But I want to minimize changes to `api.js`.
+    
+    // Let's implement full save for now.
+    const conn = await pool.getConnection();
+    try {
+        await conn.beginTransaction();
+        await conn.query('DELETE FROM order_index');
+        const entries = Object.entries(idx);
+        if (entries.length > 0) {
+            // Batch insert
+            for (let i = 0; i < entries.length; i += 100) {
+                const batch = entries.slice(i, i + 100);
+                const q = `INSERT INTO order_index (order_code, data) VALUES ${batch.map(()=>'(?,?)').join(',')}`;
+                const params = batch.flatMap(([k,v]) => [k, JSON.stringify(v)]);
+                await conn.query(q, params);
+            }
+        }
+        await conn.commit();
+        cache.orderIndex = idx;
+    } catch (e) {
+        await conn.rollback();
+        console.error('saveOrderIndex error', e);
+        throw e;
+    } finally {
+        conn.release();
+    }
+  },
+
+  // IC Cards
+  getIcCards: () => cache.icCards,
+  getIcCardIndex: () => cache.icCardIndex,
+  saveIcCards: async (list) => {
+    const conn = await pool.getConnection();
+    try {
+      await conn.beginTransaction();
+      await conn.query('DELETE FROM ic_cards');
+      if (list.length > 0) {
+        for (let i = 0; i < list.length; i += 100) {
+          const batch = list.slice(i, i + 100).map((item) => ({
+            ...item,
+            card_id: String(item?.card_id || '').trim(),
+            last_update_ts: Number(item?.last_update_ts || Date.now())
+          })).filter((item) => item.card_id);
+          if (batch.length === 0) continue;
+          const q = `INSERT INTO ic_cards (card_id, data, last_update_ts) VALUES ${batch.map(() => '(?,?,?)').join(',')}`;
+          const params = batch.flatMap((item) => [item.card_id, JSON.stringify(item), item.last_update_ts]);
+          await conn.query(q, params);
+        }
+      }
+      await conn.commit();
+      cache.icCardIndex = {};
+      list.forEach((item) => {
+        const id = String(item?.card_id || '').trim();
+        if (id) cache.icCardIndex[id] = item;
+      });
+      cache.icCards = Object.values(cache.icCardIndex).sort((a, b) => Number(b.last_update_ts || 0) - Number(a.last_update_ts || 0));
+    } catch (e) {
+      await conn.rollback();
+      console.error('saveIcCards error', e);
+      throw e;
+    } finally {
+      conn.release();
+    }
+  },
+  upsertIcCard: async (update) => {
+    const id = String(update?.card_id || '').trim();
+    if (!id) return null;
+    const cur = cache.icCardIndex[id] || {};
+    const merged = { ...cur, ...update, card_id: id, last_update_ts: Date.now() };
+    cache.icCardIndex[id] = merged;
+    cache.icCards = Object.values(cache.icCardIndex).sort((a, b) => Number(b.last_update_ts || 0) - Number(a.last_update_ts || 0));
+    try {
+      await pool.query(
+        'INSERT INTO ic_cards (card_id, data, last_update_ts) VALUES (?, ?, ?) ON DUPLICATE KEY UPDATE data = ?, last_update_ts = ?',
+        [id, JSON.stringify(merged), merged.last_update_ts, JSON.stringify(merged), merged.last_update_ts]
+      );
+    } catch (e) {
+      console.error('upsertIcCard error', e);
+    }
+    return merged;
+  },
+  deleteIcCard: async (cardId) => {
+    const id = String(cardId || '').trim();
+    if (!id) return;
+    delete cache.icCardIndex[id];
+    cache.icCards = Object.values(cache.icCardIndex).sort((a, b) => Number(b.last_update_ts || 0) - Number(a.last_update_ts || 0));
+    try {
+      await pool.query('DELETE FROM ic_cards WHERE card_id = ?', [id]);
+    } catch (e) {
+      console.error('deleteIcCard error', e);
+    }
+  },
+  appendIcCardEvent: async (entry) => {
+    cache.icCardEvents.push(entry);
+    try {
+      await pool.query('INSERT INTO ic_card_events (data) VALUES (?)', [JSON.stringify(entry)]);
+    } catch (e) {
+      console.error('appendIcCardEvent error', e);
+    }
+  },
+  getIcCardEvents: async (cardId) => {
+    const id = String(cardId || '').trim();
+    try {
+      return cache.icCardEvents.filter((item) => String(item?.card_id || '').trim() === id);
+    } catch (e) {
+      console.error('getIcCardEvents error', e);
+      return [];
+    }
+  },
+
+  // Logs (Async Read, Append Write)
+  appendLog: async (entry) => {
+    try {
+        await pool.query('INSERT INTO logs (data) VALUES (?)', [JSON.stringify(entry)]);
+    } catch(e) { console.error('appendLog error', e); }
+  },
+  readLogs: async ({ max = 200, category, type, q, since, until } = {}) => {
+    try {
+      const limit = Math.min(5000, Math.max(1, Number(max) || 200));
+      const fetchLimit = Math.min(20000, Math.max(limit, limit * 10));
+      const [rows] = await pool.query('SELECT data FROM logs ORDER BY id DESC LIMIT ?', [fetchLimit]);
+      let list = rows.map(r => r.data);
+
+      const cat = (category == null) ? '' : String(category).trim().toLowerCase();
+      if (cat) list = list.filter(x => String(x?.category || '').trim().toLowerCase() === cat);
+
+      const typeRaw = (type == null) ? '' : String(type).trim();
+      if (typeRaw) {
+        const typeList = typeRaw.split(',').map(s => s.trim()).filter(Boolean).map(s => s.toLowerCase());
+        list = list.filter(x => typeList.includes(String(x?.type || '').trim().toLowerCase()));
+      }
+
+      const qRaw = (q == null) ? '' : String(q).trim().toLowerCase();
+      if (qRaw) {
+        list = list.filter(x => {
+          try { return JSON.stringify(x || {}).toLowerCase().includes(qRaw); } catch (e) { return false; }
+        });
+      }
+
+      const toTs = (v) => {
+        if (v == null) return null;
+        if (typeof v === 'number' && Number.isFinite(v)) return v;
+        const s = String(v).trim();
+        if (!s) return null;
+        const n = Number(s);
+        if (Number.isFinite(n)) return n;
+        const d = Date.parse(s);
+        return Number.isFinite(d) ? d : null;
+      };
+      const sinceTs = toTs(since);
+      const untilTs = toTs(until);
+      if (sinceTs != null || untilTs != null) {
+        list = list.filter(x => {
+          const d = Date.parse(String(x?.ts || ''));
+          if (!Number.isFinite(d)) return false;
+          if (sinceTs != null && d < sinceTs) return false;
+          if (untilTs != null && d > untilTs) return false;
+          return true;
+        });
+      }
+
+      return list.slice(0, limit);
+    } catch (e) {
+      return [];
+    }
+  },
+  readLastLogs: async function (max = 200) { return this.readLogs({ max }); },
+
+  // Ticket Events (Async Read, Append Write)
+  appendTicketEvent: async (ev) => {
+    try {
+        await pool.query('INSERT INTO ticket_events (data) VALUES (?)', [JSON.stringify(ev)]);
+    } catch(e) { console.error('appendTicketEvent error', e); }
+  },
+  readAllTicketEvents: async () => { // Changed to async!
+    try {
+        const [rows] = await pool.query('SELECT data FROM ticket_events ORDER BY id ASC');
+        return rows.map(r => r.data);
+    } catch(e) { return []; }
+  },
+  // Optimized method for filtering by ticket_id (if I update callers)
+  getTicketEvents: async (ticketId) => {
+    try {
+        // We can't easily filter JSON in WHERE clause efficiently without generated columns.
+        // But for small scale it's fine. Or fetch all and filter in app (like original).
+        // `SELECT data FROM ticket_events WHERE data->>"$.ticket_id" = ?`
+        const [rows] = await pool.query('SELECT data FROM ticket_events WHERE data->"$.ticket_id" = ? ORDER BY id ASC', [ticketId]);
+        return rows.map(r => r.data);
+    } catch(e) { return []; }
+  },
+
+  // Ticket Index
+  getTicketIndex: () => cache.ticketIndex,
+  saveTicketIndex: async (idx) => {
+    // Same issue as orderIndex. Heavy.
+    const conn = await pool.getConnection();
+    try {
+        await conn.beginTransaction();
+        await conn.query('DELETE FROM ticket_index');
+        const entries = Object.entries(idx);
+        if (entries.length > 0) {
+            for (let i = 0; i < entries.length; i += 100) {
+                const batch = entries.slice(i, i + 100);
+                const q = `INSERT INTO ticket_index (ticket_id, data, last_update_ts) VALUES ${batch.map(()=>'(?,?,?)').join(',')}`;
+                const params = batch.flatMap(([k,v]) => [k, JSON.stringify(v), v.last_update_ts || 0]);
+                await conn.query(q, params);
+            }
+        }
+        await conn.commit();
+        cache.ticketIndex = idx;
+    } catch (e) {
+        await conn.rollback();
+        console.error('saveTicketIndex error', e);
+        throw e;
+    } finally {
+        conn.release();
+    }
+  },
+  upsertTicketIndex: async (update) => {
+    const id = String(update.ticket_id || '').trim();
+    if (!id) return;
+    const cur = cache.ticketIndex[id] || {};
+    const merged = { ...cur, ...update, last_update_ts: Date.now() };
+    cache.ticketIndex[id] = merged;
+    
+    // Efficient single update
+    try {
+        await pool.query('INSERT INTO ticket_index (ticket_id, data, last_update_ts) VALUES (?, ?, ?) ON DUPLICATE KEY UPDATE data = ?, last_update_ts = ?', 
+            [id, JSON.stringify(merged), merged.last_update_ts, JSON.stringify(merged), merged.last_update_ts]);
+    } catch(e) { console.error('upsertTicketIndex error', e); }
+    return merged;
+  },
+
+  // Stats
+  appendStatTicket: async (item) => {
+    cache.statsTicket.push(item);
+    try {
+        await pool.query('INSERT INTO stats_ticket (data) VALUES (?)', [JSON.stringify(item)]);
+    } catch(e) { console.error('appendStatTicket error', e); }
+  },
+  getStatsTicket: () => cache.statsTicket,
+
+  appendStatGate: async (item) => {
+    cache.statsGate.push(item);
+    try {
+        await pool.query('INSERT INTO stats_gate (data) VALUES (?)', [JSON.stringify(item)]);
+    } catch(e) { console.error('appendStatGate error', e); }
+  },
+  getStatsGate: () => cache.statsGate,
+
+  // Export
+  buildExportPayload: () => ({
+    config: DataService.getConfig(),
+    stations: DataService.getStations(),
+    lines: DataService.getLines(),
+    fares: DataService.getFares(),
+    stats_ticket: DataService.getStatsTicket(),
+    stats_gate: DataService.getStatsGate(),
+  }),
+  saveExport: () => {
+      try { fs.writeFileSync(paths.export, JSON.stringify(DataService.buildExportPayload(), null, 2)); } catch(e){}
+  }
+};
+
+module.exports = DataService;