/**
 * Created by Tony on 2021/11/5.
 * 实现本地indexDb的业务操作
 */

const indexDbOprObj = {
    currentDb: null,
    iniDb: function (dbName, version) {
        let rst = window.indexedDB.open(dbName, version);
        rst.onsuccess = function (event) {
            indexDbOprObj.currentDb = event.target.result;;
            console.log('数据库打开成功！');
        };
        rst.onupgradeneeded = function (event) {
            let db = event.target.result;
            indexDbOprObj.currentDb = db;
            console.log('数据库升级及初始化！');
            indexDbOprObj._iniTable(db);
        }
    },
    _iniTable: function(db) {
        if (db) {
            //本地表，主要是用来储存报表结果对象，主要是为PDF多表导出用，当然，其他方式也是可以用的(如打印)，看实际需要
            if (!db.objectStoreNames.contains('tb_ReportPages')) {
                db.createObjectStore('tb_ReportPages', { keyPath: 'id' });
            }
            if (!db.objectStoreNames.contains('tb_ReportRequests')) {
                db.createObjectStore('tb_ReportRequests', { keyPath: 'id' });
            }
        }
    },
    batchAdd: function (tbName, datas, cb) {
        let db =  indexDbOprObj.currentDb;
        let ttlAmt = datas.length;
        console.log(`已选报表数量：${ttlAmt}`);
        let cnt = 0;
        let request = db.transaction([tbName], 'readwrite').objectStore(tbName);
        request.onsuccess = function (event) {
            cnt++;
            console.log(`已选加数量：${cnt}`);
            if (cnt === ttlAmt && cb) {
                cb(datas);
            }
        };
        for (let data of datas) {
            request.add(data);
        }
    },
    _addDummy: function() {
        let db =  indexDbOprObj.currentDb;
        // let request = db.transaction(['tb_ReportRequests'], 'readwrite')
        db.transaction(['tb_ReportRequests'], 'readwrite')
            .objectStore('tb_ReportRequests')
            .add({ id: '_2830_1725', name: '多人协同2', pageSize: 'A4', CFG: null, prj_ids: [123,456,789] });
        // request.onsuccess = function (event) {
        //     console.log('数据写入成功');
        // };
        //
        // request.onerror = function (event) {
        //     console.log('数据写入失败');
        // }

        db.transaction(['tb_ReportRequests'], 'readwrite')
            .objectStore('tb_ReportRequests')
            .add({ id: '_2830_1728', name: '多人协同3', pageSize: 'A3', CFG: null, prj_ids: [668] });
    },
    _updateDummy: function () {
        let db =  indexDbOprObj.currentDb;
        let request = db.transaction(['tb_ReportRequests'], 'readwrite')
            .objectStore('tb_ReportRequests')
            .put({ id: '_2830_1725', name: '多人协同2', pageSize: 'A4', CFG: 'CFG', prj_ids: [1,2,3] });

        request.onsuccess = function (event) {
            console.log('数据写入成功');
        };

        request.onerror = function (event) {
            console.log('数据写入失败');
        }
    },
    _getDummy: function () {
        let db =  indexDbOprObj.currentDb;
        let transaction = db.transaction(['tb_ReportRequests']);
        let objectStore = transaction.objectStore('tb_ReportRequests');
        let request = objectStore.get('_2830_1725');

        request.onerror = function(event) {
            console.log('事务失败');
        };

        request.onsuccess = function(event) {
            if (request.result) {
                console.log('Name: ' + request.result.name);
                console.log('PageSize: ' + request.result.pageSize);
                console.log('CFG: ' + request.result.CFG);
                console.log('ProjectIds: ' + request.result.prj_ids);
            } else {
                console.log('未获得数据记录');
            }
        };
    },
    _getDummyAll: function (idRst, cb) {
        let db =  indexDbOprObj.currentDb;
        let objectStore = db.transaction('tb_ReportRequests').objectStore('tb_ReportRequests');

        objectStore.openCursor().onsuccess = function (event) {
            let cursor = event.target.result;

            if (cursor) {
                console.log('Id: ' + cursor.key);
                console.log('Name: ' + cursor.value.name);
                console.log('PageSize: ' + cursor.value.pageSize);
                console.log('gather_select: ' + cursor.value.gather_select);
                console.log('stage_select: ' + cursor.value.stage_select);
                console.log('CFG: ');
                console.log(cursor.value.CFG);
                if (idRst) {
                    idRst.push(cursor.key);
                }
                cursor.continue();
            } else {
                console.log('没有更多数据了！');
                if (cb) {
                    cb(idRst);
                }
            }
        };
    },
    _removeDummy: function () {
        let db =  indexDbOprObj.currentDb;
        let request = db.transaction(['tb_ReportRequests'], 'readwrite')
            .objectStore('tb_ReportRequests')
            .delete('_2830_1725');

        request.onsuccess = function (event) {
            console.log('数据删除成功');
        };

        request.onerror = function (event) {
            console.log('数据删除失败');
        }
    },
    _test: function () {
        // indexDbOprObj._addDummy();
        // indexDbOprObj._getDummy();
        let idRst = [];
        indexDbOprObj._getDummyAll(idRst, (ids)=>{
            console.log(ids);
            // indexDbOprObj.removeAll(ids);
        });
        // indexDbOprObj._updateDummy();
        // indexDbOprObj._removeDummy();
    },
    storeReportRequest: function (stage_id, rptNodes) {
        if (rptNodes && rptNodes.length > 0) {
            let datas = [];
            for (let node of rptNodes) {
                let keyStr = `_${stage_id}_${node.refId}`;
                const gather_select = customSelects.gather_select.find(function (x) {
                    return x.id === node.refId;
                });
                const stage_select = customSelects.stage_select.find(function (x) {
                    return x.id === node.refId;
                });
                let data = {id: keyStr, name: node.name, gather_select, stage_select, pageSize: rptControlObj.getCurrentPageSize(), CFG: CUST_CFG};
                datas.push(data);
            }
            indexDbOprObj.batchAdd('tb_ReportRequests', datas, (rstArr)=>{
                console.log('batch add succeeded!');
                console.log(rstArr);
                //其他操作
            });
        }
    },
    storeReportPages: function (rptPages, stage_id, rptNode) {
        //
    },
    removeAll: function(idArr) {
        if (idArr && idArr.length > 0) {
            let db =  indexDbOprObj.currentDb;
            let request = db.transaction(['tb_ReportRequests'], 'readwrite').objectStore('tb_ReportRequests');
            for (let id of idArr) {
                request.delete(id);
                request.onsuccess = function (event) {
                    console.log(`数据（'${id}'）删除成功`);
                };
            }
        }
    },
    getReportPages: function (rpt_id, stage_id) {
        //
    }
};