feat: SQLite 数据库初始化及模板 CRUD

electron/db/init.js

@@ -0,0 +1,41 @@
+const Database = require("better-sqlite3");
+const path = require("path");
+const { app } = require("electron");
+const fs = require("fs");
+
+const DB_DIR = path.join(app.getPath("userData"), "excel-batch-editor");
+fs.mkdirSync(DB_DIR, { recursive: true });
+const DB_PATH = path.join(DB_DIR, "app.db");
+
+const db = new Database(DB_PATH);
+
+db.exec(`
+  CREATE TABLE IF NOT EXISTS templates (
+    id TEXT PRIMARY KEY,
+    name TEXT NOT NULL,
+    grp TEXT DEFAULT '',
+    file_path TEXT NOT NULL,
+    created_at TEXT NOT NULL,
+    updated_at TEXT NOT NULL
+  );
+
+  CREATE TABLE IF NOT EXISTS fields (
+    id TEXT PRIMARY KEY,
+    template_id TEXT NOT NULL,
+    name TEXT NOT NULL,
+    type TEXT NOT NULL,
+    sheet TEXT NOT NULL,
+    cell TEXT NOT NULL,
+    FOREIGN KEY (template_id) REFERENCES templates(id) ON DELETE CASCADE
+  );
+
+  CREATE TABLE IF NOT EXISTS generation_records (
+    id TEXT PRIMARY KEY,
+    template_id TEXT NOT NULL,
+    created_at TEXT NOT NULL,
+    output_dir TEXT NOT NULL,
+    row_count INTEGER NOT NULL
+  );
+`);
+
+module.exports = db;

electron/db/templateDb.js

@@ -0,0 +1,47 @@
+const db = require("./init");
+const { randomUUID } = require("crypto");
+
+function listTemplates() {
+  const templates = db.prepare("SELECT * FROM templates ORDER BY updated_at DESC").all();
+  return templates.map((t) => ({
+    ...t,
+    fields: db.prepare("SELECT * FROM fields WHERE template_id = ?").all(t.id),
+  }));
+}
+
+function saveTemplate({ name, grp = "", file_path, fields = [] }) {
+  const id = randomUUID();
+  const now = new Date().toISOString();
+  db.prepare(
+    "INSERT INTO templates (id, name, grp, file_path, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?)"
+  ).run(id, name, grp, file_path, now, now);
+  _saveFields(id, fields);
+  return id;
+}
+
+function updateTemplate(id, { name, grp, fields }) {
+  const now = new Date().toISOString();
+  if (name !== undefined || grp !== undefined) {
+    db.prepare("UPDATE templates SET name = COALESCE(?, name), grp = COALESCE(?, grp), updated_at = ? WHERE id = ?")
+      .run(name ?? null, grp ?? null, now, id);
+  }
+  if (fields !== undefined) {
+    db.prepare("DELETE FROM fields WHERE template_id = ?").run(id);
+    _saveFields(id, fields);
+  }
+}
+
+function deleteTemplate(id) {
+  db.prepare("DELETE FROM templates WHERE id = ?").run(id);
+}
+
+function _saveFields(templateId, fields) {
+  const stmt = db.prepare(
+    "INSERT INTO fields (id, template_id, name, type, sheet, cell) VALUES (?, ?, ?, ?, ?, ?)"
+  );
+  for (const f of fields) {
+    stmt.run(randomUUID(), templateId, f.name, f.type, f.sheet, f.cell);
+  }
+}
+
+module.exports = { listTemplates, saveTemplate, updateTemplate, deleteTemplate };