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| 1 | +import { tableList } from './table'; |
| 2 | + |
| 3 | +// 创建数据库的方法 |
| 4 | +export const createDB = (dbName: string, version: number) => { |
| 5 | + return new Promise((resolve, reject) => { |
| 6 | + const request = window.indexedDB.open(dbName, version); |
| 7 | + request.onerror = (event: any) => { |
| 8 | + reject(event.target.error); |
| 9 | + }; |
| 10 | + request.onsuccess = (event: any) => { |
| 11 | + resolve(event.target.result); |
| 12 | + }; |
| 13 | + request.onupgradeneeded = (event: any) => { |
| 14 | + const db = event.target.result; // 数据库对象 |
| 15 | + // 创建存储库 |
| 16 | + tableList.forEach((item: any) => { |
| 17 | + const { tableDetails } = item; |
| 18 | + const objectStore = db.createObjectStore(tableDetails.name, tableDetails.primaryKey); |
| 19 | + tableDetails.column.forEach((i: any) => { |
| 20 | + if (i.isIndex) { |
| 21 | + objectStore.createIndex(i.name, i.keyPath, i.options); |
| 22 | + } |
| 23 | + }); |
| 24 | + }); |
| 25 | + }; |
| 26 | + }); |
| 27 | +}; |
| 28 | + |
| 29 | +// 添加数据 |
| 30 | +export const addData = (db: any, tableName: string, data: any) => { |
| 31 | + return new Promise((resolve, reject) => { |
| 32 | + const transaction = db.transaction(tableName, 'readwrite'); |
| 33 | + const objectStore = transaction.objectStore(tableName); |
| 34 | + const request = objectStore.add(data); |
| 35 | + request.onsuccess = () => { |
| 36 | + resolve(true); |
| 37 | + }; |
| 38 | + request.onerror = (error) => { |
| 39 | + reject(error); |
| 40 | + }; |
| 41 | + }); |
| 42 | +}; |
| 43 | + |
| 44 | +// 删除数据 |
| 45 | +export const deleteData = (db: any, tableName: string, key: string) => { |
| 46 | + return new Promise((resolve, reject) => { |
| 47 | + const transaction = db.transaction(tableName, 'readwrite'); |
| 48 | + const objectStore = transaction.objectStore(tableName); |
| 49 | + const request = objectStore.delete(key); |
| 50 | + request.onsuccess = () => { |
| 51 | + resolve(true); |
| 52 | + }; |
| 53 | + request.onerror = () => { |
| 54 | + reject(false); |
| 55 | + }; |
| 56 | + }); |
| 57 | +}; |
| 58 | + |
| 59 | +// 修改数据 |
| 60 | +export const updateData = (db: any, tableName: string, data: any) => { |
| 61 | + return new Promise((resolve, reject) => { |
| 62 | + const transaction = db.transaction(tableName, 'readwrite'); |
| 63 | + const objectStore = transaction.objectStore(tableName); |
| 64 | + const request = objectStore.put(data); |
| 65 | + request.onsuccess = () => { |
| 66 | + resolve(true); |
| 67 | + }; |
| 68 | + request.onerror = () => { |
| 69 | + reject(false); |
| 70 | + }; |
| 71 | + }); |
| 72 | +}; |
| 73 | + |
| 74 | +// 查询数据 |
| 75 | +export const getData = (db: any, tableName: string, key: string) => { |
| 76 | + return new Promise((resolve, reject) => { |
| 77 | + const transaction = db.transaction(tableName, 'readwrite'); |
| 78 | + const objectStore = transaction.objectStore(tableName); |
| 79 | + const request = objectStore.get(key); |
| 80 | + request.onsuccess = () => { |
| 81 | + resolve(request.result); |
| 82 | + }; |
| 83 | + request.onerror = () => { |
| 84 | + reject(false); |
| 85 | + }; |
| 86 | + }); |
| 87 | +}; |
| 88 | + |
| 89 | +// 关闭数据库 |
| 90 | +export const closeDB = (db: any) => { |
| 91 | + return new Promise((resolve) => { |
| 92 | + db.close(); |
| 93 | + resolve(true); |
| 94 | + }); |
| 95 | +}; |
| 96 | + |
| 97 | +export default { |
| 98 | + createDB, |
| 99 | + addData, |
| 100 | + deleteData, |
| 101 | + updateData, |
| 102 | + getData, |
| 103 | + closeDB, |
| 104 | +}; |
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