package com.dsideal.base.Tools;

import com.dsideal.base.Plugin.YamlProp;
import com.jfinal.kit.Kv;
import com.jfinal.kit.Prop;
import com.jfinal.plugin.activerecord.ActiveRecordPlugin;
import com.jfinal.plugin.activerecord.Db;
import com.jfinal.plugin.activerecord.SqlPara;
import com.jfinal.plugin.activerecord.dialect.MysqlDialect;
import com.jfinal.plugin.hikaricp.HikariCpPlugin;
import com.jfinal.plugin.activerecord.Record;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

public class InitDataEaseDataSet {
    //DataEase数据库名称
    public static final String DB_NAME = "dataease";

    /**
     * 获取数据集的表名
     *
     * @param dataset_group_id 数据集的id
     * @return 表名
     */
    public static String getTableName(long dataset_group_id) {
        Kv kv = Kv.by("dataset_group_id", dataset_group_id);
        SqlPara sqlPara = Db.getSqlPara("DataEase.getTableName", kv);
        return Db.findFirst(sqlPara).getStr("table_name");
    }


    /**
     * 将数据集填充到数据库表中，用于配置此数据集让谁来维护
     *
     * @param parent_name  数据集的父名称
     * @param table_name   表名
     * @param dataset_name 数据集名
     */
    public static void addDataSet(String parent_name, String table_name, String dataset_name,long sort_id) {
        String sql = "select count(1) from t_dp_dataset where table_name=?";
        if (Db.queryInt(sql, table_name) == 0) {
            Record record = new Record();
            record.set("parent_name", parent_name);
            record.set("table_name", table_name);
            record.set("dataset_name", dataset_name);
            if (parent_name.contains("省")) {
                record.set("owner_id", 1);
            } else if (parent_name.contains("市") || parent_name.contains("州")) {
                record.set("owner_id", 2);
            } else if (parent_name.contains("县")) {
                record.set("owner_id", 3);
            }
            record.set("sort_id",sort_id);
            Db.save("t_dp_dataset", "id", record);
            System.out.println("添加数据集成功,parent_name=" + parent_name + ",table_name=" + table_name + ",dataset_name=" + dataset_name);
        }
    }

    /**
     * 获取表中不允许为空的列名
     *
     * @param tableName 表名
     * @return 列名列表
     */
    public static List<String> getNotNullColumns(String tableName) {
        List<String> columns = new ArrayList<>();
        String sql = "SELECT COLUMN_NAME FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ? AND IS_NULLABLE = 'NO'";
        List<Record> results = Db.find(sql, DB_NAME, tableName);
        for (Record result : results) {
            columns.add(result.get("COLUMN_NAME").toString());
        }
        return columns;
    }

    // 检查表是否存在主键
    public static boolean hasPrimaryKey(String tableName) {
        String sql = "SELECT COUNT(*) as c FROM information_schema.TABLE_CONSTRAINTS WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ? AND CONSTRAINT_TYPE = 'PRIMARY KEY'";
        return Db.use("dataease").queryInt(sql, DB_NAME, tableName) > 0;
    }

    // 添加主键列，并设置为主键
    public static void addPrimaryKey(String tableName) {
        // 添加 id 列
        String sql = "ALTER TABLE `" + tableName + "` ADD COLUMN `id` int(11) primary key auto_increment first";
        Db.use(DB_NAME).update(sql);
    }

    /**
     * 获取所有以 excel_ 开头的表
     *
     * @return
     */
    public static List<Record> getExcelTable() {
        // 查询所有以 excel_ 开头的表
        String sql = "SELECT TABLE_NAME FROM information_schema.TABLES WHERE TABLE_SCHEMA = 'dataease' AND TABLE_NAME LIKE 'excel\\_%'";
        return Db.use(DB_NAME).find(sql);
    }

    /**
     * 添加主键
     */
    public static void addPrimaryKey() {
        // 查询所有以 excel_ 开头的表
        List<Record> tables = getExcelTable();

        for (Record table : tables) {
            String tableName = table.getStr("TABLE_NAME");
            //没有主键的表，添加上主键
            if (!hasPrimaryKey(tableName)) {
                System.out.println("表" + tableName + "没有主键，正在添加主键...");
                addPrimaryKey(tableName);
                System.out.println("添加主键成功");
            }
        }
    }

    /**
     * 将Excel表中不允许为空的列改为允许为空
     */
    public static void updateNotNullColumns() {
        // 查询所有以 excel_ 开头的表
        List<Record> tables = getExcelTable();

        for (Record table : tables) {
            String tableName = table.getStr("TABLE_NAME");
            //获取非空列
            List<String> cols = getNotNullColumns(tableName);

            for (String col : cols) {
                if (!col.equals("id")) {
                    System.out.println("列" + col + "非空，正在去掉不允许为空的限制...");
                    //去掉不允许为空的限制
                    String sql = "ALTER TABLE `" + tableName + "` MODIFY `" + col + "` VARCHAR(255) NULL";
                    Db.use(DB_NAME).update(sql);
                    System.out.println("去掉不允许为空的限制成功");
                }
            }
        }
    }

    public static void main(String[] args) {
        //加载配置文件
        String configFile = "application_dev.yaml";
        Prop PropKit = new YamlProp(configFile);
        HikariCpPlugin masterPlugin = new HikariCpPlugin(PropKit.get("mysql.jdbcUrl"), PropKit.get("mysql.user"),
                PropKit.get("mysql.password").trim(), PropKit.get("mysql.driverClassName"));
        masterPlugin.start();

        HikariCpPlugin dataEasePlugin = new HikariCpPlugin(PropKit.get("mysql.jdbcUrl").replace("ds_db", DB_NAME), PropKit.get("mysql.user"),
                PropKit.get("mysql.password").trim(), PropKit.get("mysql.driverClassName"));
        dataEasePlugin.start();

        // 配置ActiveRecord插件
        ActiveRecordPlugin arp = new ActiveRecordPlugin("master", masterPlugin);
        arp.setDialect(new MysqlDialect());

        ActiveRecordPlugin arpDataEase = new ActiveRecordPlugin(DB_NAME, dataEasePlugin);
        arpDataEase.setDialect(new MysqlDialect());

        //遍历sql目录下所有的sql文件
        File sqlDir;
        String basePath = InitDataEaseDataSet.class.getResource("/").getPath();
        sqlDir = new File(basePath + "/Sql");
        File[] sqlFiles = sqlDir.listFiles();
        for (File sqlFile : sqlFiles != null ? sqlFiles : new File[0]) {
            //只加载.sql文件
            if (sqlFile.getName().indexOf(".sql") > 0) {
                arp.addSqlTemplate("/Sql/" + sqlFile.getName());
                arpDataEase.addSqlTemplate("/Sql/" + sqlFile.getName());
            }
        }
        arp.start();
        arpDataEase.start();

        //1、获取树根
        SqlPara sqlPara = Db.getSqlPara("DataEase.getTreeRoot");
        Record rRoot = Db.findFirst(sqlPara);
        long rootId = rRoot.getLong("id");

        //2、查询有哪些数据集
        Kv kv = Kv.by("id", rootId);
        kv.set("dataset", true);
        sqlPara = Db.getSqlPara("DataEase.getAllDataSet", kv);
        List<Record> list = Db.find(sqlPara);

        for (Record record : list) {
            long id = record.getLong("id");
            //数据集父名称
            String parent_name = record.getStr("parent_name");
            //数据集名称
            String dataset_name = record.getStr("name");
            //对应的表名
            String table_name = getTableName(id);

            //将这些数据集扫描到表中，然后标识这个数据集由谁来维护
            addDataSet(parent_name, table_name, dataset_name,id);
        }
        //加上主键
        //addPrimaryKey();
        //将所有非空列去掉不允许为空的限制
        updateNotNullColumns();
    }
}