'use strict';

/**
 *
 *
 * @author Mai
 * @date
 * @version
 */

const path = require('path');

module.exports = app => {
    class Filing extends app.BaseService {

        /**
         * 构造函数
         *
         * @param {Object} ctx - egg全局变量
         * @param {String} tableName - 表名
         * @return {void}
         */
        constructor(ctx) {
            super(ctx);
            this.tableName = 'file';
        }

        analysisFiles(files) {
            const helper = this.ctx.helper;
            const userId = this.ctx.session.sessionUser.accountId;
            const ossPath = this.ctx.app.config.fujianOssPath;
            files.forEach(x => {
                x.viewpath = helper.canPreview(x.fileext) ? ossPath + x.filepath : '';
                x.filepath = ossPath + x.filepath;
                x.fileext_str = helper.fileExtStr(x.fileext);
                x.canEdit = x.user_id === userId;
            });
        }

        async getFiles(condition) {
            condition.orders = [['create_time', 'desc']];
            const result = await this.getAllDataByCondition(condition);
            this.analysisFiles(result);
            return result;
        }

        async addFiles(filing, fileInfo, user) {
            const conn = await this.db.beginTransaction();
            const result = {};
            try {
                const insertData = fileInfo.map(x => {
                    return {
                        id: this.uuid.v4(), spid: filing.spid, filing_id: filing.id, filing_type: filing.filing_type,
                        user_id: user.id, user_name: user.name, user_company: user.company, user_role: user.role,
                        filename: x.filename, fileext: x.fileext, filesize: x.filesize, filepath: x.filepath,
                    };
                });
                await conn.insert(this.tableName, insertData);
                const count = await conn.count(this.tableName, { filing_id: filing.id, is_deleted: 0 });
                await conn.update(this.ctx.service.filing.tableName, { id: filing.id, file_count: count });
                await conn.commit();
                result.files = { id: insertData.map(x => { return x.id; })};
                result.filing = { id: filing.id, file_count: count };
            } catch (err) {
                await conn.rollback();
                throw err;
            }
            result.files = await this.getFiles({ where: result.files });
            return result;
        }

        async delFiles(files) {
            if (files.length === 0) return;

            const fileDatas = await this.getAllDataByCondition({ where: { id: files } });
            const filing = await this.ctx.service.filing.getDataById(fileDatas[0].filing_id);
            const result = {};

            const conn = await this.db.beginTransaction();
            try {
                const updateData = fileDatas.map(x => { return { id: x.id, is_deleted: 1 }; });
                if (updateData.length > 0) await conn.updateRows(this.tableName, updateData);
                const count = await conn.count(this.tableName, { filing_id: filing.id, is_deleted: 0 });
                await conn.update(this.ctx.service.filing.tableName, { id: filing.id, file_count: count });
                await conn.commit();
                result.del = files;
                result.filing = { id: filing.id, file_count: count };
            } catch (err) {
                await conn.rollback();
                throw err;
            }
            return result;
        }

        async relaFiles(filing, fileInfo, user) {
            const conn = await this.db.beginTransaction();
            const result = {};
            try {
                const insertData = fileInfo.map(x => {
                    return {
                        id: this.uuid.v4(), spid: filing.spid, filing_id: filing.id, filing_type: filing.filing_type,
                        user_id: user.id, user_name: user.name, user_company: user.company, user_role: user.role,
                        filename: x.filename, fileext: x.fileext, filesize: x.filesize, filepath: x.filepath,
                        is_rela: 1, rela_info: x.rela_info,
                    };
                });
                await conn.insert(this.tableName, insertData);
                const count = await conn.count(this.tableName, { filing_id: filing.id, is_deleted: 0 });
                await conn.update(this.ctx.service.filing.tableName, { id: filing.id, file_count: count });
                await conn.commit();
                result.files = { id: insertData.map(x => { return x.id; })};
                result.filing = { id: filing.id, file_count: count };
            } catch (err) {
                await conn.rollback();
                throw err;
            }
            result.files = await this.getFiles({ where: result.files });
            return result;
        }

        async saveFile(id, filename){
            const file = await this.getDataById(id);
            if (!file) throw '文件不存在';
            if (file.user_id !== this.ctx.session.sessionUser.accountId) throw '您无权编辑该文件';

            const info = path.parse(filename);
            const updateData = { id, filename: info.name, fileext: info.ext};
            await this.defaultUpdate(updateData);
            return updateData;
        }
    }

    return Filing;
};