/*
 * Copyright (c) 2011-2024, baomidou (jobob@qq.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.baomidou.mybatisplus.generator.config.converts;

import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.generator.config.ITypeConvert;
import com.baomidou.mybatisplus.generator.config.converts.select.BranchBuilder;
import com.baomidou.mybatisplus.generator.config.converts.select.Selector;
import com.baomidou.mybatisplus.generator.config.rules.IColumnType;

/**
 * 该注册器负责注册并查询类型注册器
 *
 * @author nieqiuqiu, hanchunlin
 * @since 3.3.1
 */
public class TypeConverts {

    /**
     * 查询数据库类型对应的类型转换器
     *
     * @param dbType 数据库类型
     * @return 返回转换器
     */
    public static ITypeConvert getTypeConvert(DbType dbType) {
        switch (dbType) {
            case ORACLE:
                return OracleTypeConvert.INSTANCE;
            case DB2:
                return DB2TypeConvert.INSTANCE;
            case DM:
            case GAUSS:
                return DmTypeConvert.INSTANCE;
            case KINGBASE_ES:
                return KingbaseESTypeConvert.INSTANCE;
            case OSCAR:
                return OscarTypeConvert.INSTANCE;
            case MYSQL:
            case MARIADB:
                return MySqlTypeConvert.INSTANCE;
            case POSTGRE_SQL:
                return PostgreSqlTypeConvert.INSTANCE;
            case SQLITE:
                return SqliteTypeConvert.INSTANCE;
            case SQL_SERVER:
                return SqlServerTypeConvert.INSTANCE;
            case FIREBIRD:
                return FirebirdTypeConvert.INSTANCE;
            case CLICK_HOUSE:
                return ClickHouseTypeConvert.INSTANCE;
        }
        return null;
    }

    /**
     * 使用指定参数构建一个选择器
     *
     * @param param 参数
     * @return 返回选择器
     */
    static Selector<String, IColumnType> use(String param) {
        return new Selector<>(param.toLowerCase());
    }

    /**
     * 这个分支构建器用于构建用于支持 {@link String#contains(CharSequence)} 的分支
     *
     * @param value 分支的值
     * @return 返回分支构建器
     * @see #containsAny(CharSequence...)
     */
    static BranchBuilder<String, IColumnType> contains(CharSequence value) {
        return BranchBuilder.of(s -> s.contains(value));
    }

    /**
     * @see #contains(CharSequence)
     */
    static BranchBuilder<String, IColumnType> containsAny(CharSequence... values) {
        return BranchBuilder.of(s -> {
            for (CharSequence value : values) {
                if (s.contains(value)) {
                    return true;
                }
            }
            return false;
        });
    }
}
