//
//  RQQuestionDBManager.m
//  SDJK
//
//  Created by 张嵘 on 2021/8/20.
//

#import "RQQuestionDBManager.h"

@interface RQQuestionDBManager  ()
//@property (nonatomic, readwrite, strong) FMDatabase *database;
@property (nonatomic, readwrite, strong) FMDatabaseQueue *databaseQueue;
@end

@implementation RQQuestionDBManager
static id rq_questionDBManager = nil;
#pragma mark -  init
+ (instancetype)sharedInstance {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        rq_questionDBManager = [[self alloc] init];
    });
    return rq_questionDBManager;
}

- (instancetype)init {
    if (self = [super init]) {
        NSError *error;
        NSString *dbPath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject] stringByAppendingPathComponent:[NSString stringWithFormat:@"question20210722.db"]];
        NSString *resourcePath = [[NSBundle mainBundle] pathForResource:@"question20210722" ofType:@"db"];

        if ([RQFileManager isPathExist:dbPath]) {
//            self.database = [FMDatabase databaseWithPath:dbPath];
            self.databaseQueue = [FMDatabaseQueue databaseQueueWithPath:dbPath];
            NSLog(@"数据库path-----%@",dbPath);
//            [_database open];
        } else {
            [[RQFileManager fileManager] copyItemAtPath:resourcePath toPath:[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject] stringByAppendingPathComponent:[NSString stringWithFormat:@"question20210722.db"]] error:&error];
//            self.database = [FMDatabase databaseWithPath:dbPath];
            self.databaseQueue = [FMDatabaseQueue databaseQueueWithPath:dbPath];
            NSLog(@"数据库path-----%@",dbPath);
//            [_database open];
        }
    }
    return self;
}


#pragma mark - Public Method
//- (NSArray *)getColumnWithCarType:(RQHomePageCarType)carType subject:(RQHomePageSubjectType)subject pageType:(RQHomeSubPageType)pageType {
//    NSMutableArray *arr = @[].mutableCopy;
//    ///  默认为轿车
//    NSString *queryCarTypeStr = @"lice_car = 1";
//    
//    switch (carType) {
//        case RQHomePageCarType_Car:
//            queryCarTypeStr = @"lice_car = 1";
//            break;
//        case RQHomePageCarType_Bus:
//            queryCarTypeStr = @"lice_bus = 1";
//            break;
//        case RQHomePageCarType_Truck:
//            queryCarTypeStr = @"lice_truck = 1";
//            break;
//        case RQHomePageCarType_Motorcycle:
//            queryCarTypeStr = @"lice_moto = 1";
//            break;
//            
//        default:
//            break;
//    }
//    ///  默认科目一
//    NSString *querySubjectTypeStr = @"subject_1 = 1";
//    
//    switch (subject) {
//        case RQHomePageSubjectType_SubjectOne:
//            querySubjectTypeStr = @"subject_1 = 1";
//            break;
//        case RQHomePageSubjectType_SubjectTwo:
//            querySubjectTypeStr = @"subject_2 = 1";
//            break;
//        case RQHomePageSubjectType_SubjectThree:
//            querySubjectTypeStr = @"subject_3 = 1";
//            break;
//        case RQHomePageSubjectType_SubjectFour:
//            querySubjectTypeStr = @"subject_4 = 1";
//            break;
//            
//        default:
//            break;
//    }
//    
//    ///  默认顺序练习
//    NSString *pageTypeStr = @"seque_issue_name";
//    NSString *pageTypeByOrderStr = @"seque_issue";
//    
//    
//    switch (pageType) {
//        case RQHomeSubPageType_SequentialPractice:
//            pageTypeStr = @"seque_issue_name";
//            pageTypeByOrderStr = @"seque_issue";
//            break;
//        case RQHomeSubPageType_LocalTopics:
//            pageTypeStr = @"place_issue_name";
//            pageTypeByOrderStr = @"place_issue";
//            break;
//        case RQHomeSubPageType_ClassificationExercise:
//            pageTypeStr = @"class_issue_name";
//            pageTypeByOrderStr = @"class_issue";
//            break;
//        case RQHomeSubPageType_SelectedTestQuestions:
//            pageTypeStr = @"excell_issue_name";
//            pageTypeByOrderStr = @"excell_issue";
//            break;
//            
//        default:
//            break;
//    }
//    
//    if ([_database open]) {
//        FMResultSet *resultSet;
//        NSString *queryStr = [NSString stringWithFormat:@"select distinct %@ from question_info where %@ and %@ %@ order by %@ + 0 ASC", pageTypeStr, queryCarTypeStr, querySubjectTypeStr, (pageType == RQHomeSubPageType_LocalTopics)? @"and place_issue != 0" : @"", pageTypeByOrderStr];
//        resultSet = [_database executeQuery:queryStr];
//        while ([resultSet next]) {
//            NSString *str = [resultSet stringForColumn:pageTypeStr];
//            // 对应字段来取数据
//            [arr addObject:str? : @"地方题"];
//        }
//        
//        if ([arr containsObject:@"地方题"] && [arr indexOfObject:@"地方题"] == 0) {
//            NSString *saveStr = arr.firstObject;
//            [arr removeFirstObject];
//            [arr addObject:saveStr];
//        }
//    
//        [_database close];
//    }
//    
//    return arr.copy;
//}
//
//- (NSArray *)getQuestionWithCarType:(RQHomePageCarType)carType subject:(RQHomePageSubjectType)subject pageType:(RQHomeSubPageType)pageType name:(NSString *)name exerciseType:(RQExerciseType)exerciseType {
//    NSMutableArray *arr = @[].mutableCopy;
//    ///  默认为轿车
//    NSString *queryCarTypeStr = @"lice_car = 1";
//    
//    switch (carType) {
//        case RQHomePageCarType_Car:
//            queryCarTypeStr = @"lice_car = 1";
//            break;
//        case RQHomePageCarType_Bus:
//            queryCarTypeStr = @"lice_bus = 1";
//            break;
//        case RQHomePageCarType_Truck:
//            queryCarTypeStr = @"lice_truck = 1";
//            break;
//        case RQHomePageCarType_Motorcycle:
//            queryCarTypeStr = @"lice_moto = 1";
//            break;
//            
//        default:
//            break;
//    }
//    ///  默认科目一
//    NSString *querySubjectTypeStr = @"subject_1 = 1";
//    
//    switch (subject) {
//        case RQHomePageSubjectType_SubjectOne:
//            querySubjectTypeStr = @"subject_1 = 1";
//            break;
//        case RQHomePageSubjectType_SubjectTwo:
//            querySubjectTypeStr = @"subject_2 = 1";
//            break;
//        case RQHomePageSubjectType_SubjectThree:
//            querySubjectTypeStr = @"subject_3 = 1";
//            break;
//        case RQHomePageSubjectType_SubjectFour:
//            querySubjectTypeStr = @"subject_4 = 1";
//            break;
//            
//        default:
//            break;
//    }
//    
//    ///  默认顺序练习
//    NSString *pageTypeStr = @"seque_issue_name";
//    NSString *pageTypeByOrderStr = @"seque_issue";
//    NSString *nameStr = @"";
//
//    switch (pageType) {
//        case RQHomeSubPageType_SequentialPractice:
//            pageTypeStr = @"seque_issue_name";
//            pageTypeByOrderStr = @"seque_issue";
//            nameStr = [NSString stringWithFormat:@"and seque_issue_name = '%@'",name];
//            break;
//        case RQHomeSubPageType_LocalTopics:
//            pageTypeStr = @"place_issue_name";
//            pageTypeByOrderStr = @"place_issue";
//            nameStr = [NSString stringWithFormat:@"and place_issue_name = '%@'",name];
//            break;
//        case RQHomeSubPageType_ClassificationExercise:
//            pageTypeStr = @"class_issue_name";
//            pageTypeByOrderStr = @"class_issue";
//            nameStr = [NSString stringWithFormat:@"and class_issue_name = '%@'",name];
//            break;
//        case RQHomeSubPageType_SelectedTestQuestions:
//            pageTypeStr = @"excell_issue_name";
//            pageTypeByOrderStr = @"excell_issue";
//            nameStr = [NSString stringWithFormat:@"and excell_issue_name = '%@'",name];
//            break;
//            
//        default:
//            break;
//    }
//    if (RQStringIsEmpty(name)) {
//        nameStr = @"";
//    }
//    
//    /// 默认按_id排序
//    NSString *exerciseTypeStr = @"_id + 0 ASC";
//
//    switch (exerciseType) {
//        case RQExerciseType_Sequential:
//            exerciseTypeStr = @"_id + 0 ASC";
//            break;
//        case RQExerciseType_Random:
//            exerciseTypeStr = @"random()";
//            break;
//        case RQExerciseType_Recitation:
//            exerciseTypeStr = @"_id + 0 ASC";
//            break;
//        case RQExerciseType_Test:
//            exerciseTypeStr = @"random() limit 50";
//            break;
//        case RQExerciseType_Exam:
//            exerciseTypeStr = @"random() limit 5";
//            break;
//            
//        default:
//            break;
//    }
//    
//    //     resultSet = [_db executeQuery:@"select * from question_info where answer like '%-%'"];
//
//    NSString *queryStr = [NSString stringWithFormat:@"select * from question_info where %@ and %@ %@ order by %@", queryCarTypeStr, querySubjectTypeStr, nameStr, exerciseTypeStr];
//    
//    
//    @weakify(queryStr)
//    if (exerciseType == RQExerciseType_Exam && pageType == RQHomeSubPageType_MockExamination) {
//        
//        RACSignal *signal1 = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber>  _Nonnull subscriber) {
//            @strongify(queryStr)
//            queryStr = [NSString stringWithFormat:@"select * from question_info where %@ and %@ %@ %@ order by %@", queryCarTypeStr, querySubjectTypeStr, nameStr, @"and answer like '%√%' or answer like '%×%'", [self getQuestionNumQueryStrWithCarType:carType subject:subject questionType:RQQuestionType_Judgment]];
//            [subscriber sendNext:[self queryQuestionWithQueryStr:queryStr exerciseType:exerciseType]];
//            [subscriber sendCompleted];
//            return [RACDisposable disposableWithBlock:^{
//            }];
//        }];
//        
//        RACSignal *signal2 = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber>  _Nonnull subscriber) {
//            @strongify(queryStr)
//            queryStr = [NSString stringWithFormat:@"select * from question_info where %@ and %@ %@ %@ order by %@", queryCarTypeStr, querySubjectTypeStr, nameStr, @"and answer not like '%√%' and answer not like '%×%' and answer not like '%-%'", [self getQuestionNumQueryStrWithCarType:carType subject:subject questionType:RQQuestionType_SingleChoice]];
//            [subscriber sendNext:[self queryQuestionWithQueryStr:queryStr exerciseType:exerciseType]];
//            [subscriber sendCompleted];
//            return [RACDisposable disposableWithBlock:^{
//            }];
//        }];
//        RACSignal *signal3 = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber>  _Nonnull subscriber) {
//            @strongify(queryStr)
//            queryStr = [NSString stringWithFormat:@"select * from question_info where %@ and %@ %@ %@ order by %@", queryCarTypeStr, querySubjectTypeStr, nameStr, @"and answer like '%-%' ", [self getQuestionNumQueryStrWithCarType:carType subject:subject questionType:RQQuestionType_MultipleChoice]];
//            [subscriber sendNext:[self queryQuestionWithQueryStr:queryStr exerciseType:exerciseType]];
//            [subscriber sendCompleted];
//            return [RACDisposable disposableWithBlock:^{
//            }];
//        }];
//        RACSignal *signal4 = [RACSignal combineLatest:@[signal1, signal2, signal3] reduce:^id (NSArray *arr1, NSArray *arr2, NSArray *arr3){
//            [arr addObjectsFromArray:arr1];
//            [arr addObjectsFromArray:arr2];
//            [arr addObjectsFromArray:arr3];
//            return arr.copy;
//        }];
//        [signal4 subscribeNext:^(NSArray *allArr) {
//            
//        }];
//        return arr.copy;
//    } else {
//        return [self queryQuestionWithQueryStr:queryStr exerciseType:exerciseType];
//    }
//}
//
//- (RQExerciseModel *)getQuestionWithQuestionId:(NSInteger )questionId {
//    RQExerciseModel *exerciseModel;
//    if ([_database open]) {
//        exerciseModel = [self getQuestionWithDataBase:_database questionId:questionId];
//        [_database close];
//    }
//    return exerciseModel;
//}
//
//- (void)getQuestionsWithQuestionIdArr:(NSArray *)questionIdArr complete:(VoidBlock_id)complete {
//    NSMutableArray *arr = @[].mutableCopy;
//    if (_databaseQueue) {
//        [_databaseQueue inTransaction:^(FMDatabase * _Nonnull db, BOOL * _Nonnull rollback) {
//            @try {
//                [questionIdArr.rac_sequence.signal subscribeNext:^(NSString *questionIdStr) {
//                    RQExerciseModel *exerciseModel = [self getQuestionWithDataBase:db questionId:questionIdStr.integerValue];
//                    [arr addObject:exerciseModel];
//                } completed:^{
//                    if (complete) {
//                        complete(arr.copy);
//                    }
//                }];
//            } @catch (NSException *exception) {
//                *rollback = YES;
//            } @finally {
//                *rollback = NO;
//            }
//        }];
//    }
//}
//
//
//#pragma mark - Private Method
//- (NSArray *)queryQuestionWithQueryStr:(NSString *)queryStr exerciseType:(RQExerciseType)exerciseType {
//    NSMutableArray *arr = @[].mutableCopy;
//    if ([_database open]) {
//        FMResultSet *resultSet;
//        resultSet = [_database executeQuery:queryStr];
//        while ([resultSet next]) {
//            RQExerciseModel *exerciseModel = [RQExerciseModel exerciseModelWithFMResultSet:resultSet];
//            if (exerciseType == RQExerciseType_Recitation) {
//                exerciseModel.userAnswer = exerciseModel.answer;
//            }
//            [arr addObject:exerciseModel];
//        }
//    
//        [_database close];
//    }
//    return arr.copy;
//}
//
//- (NSString *)getQuestionNumQueryStrWithCarType:(RQHomePageCarType)carType subject:(RQHomePageSubjectType)subject questionType:(RQQuestionType)questionType {
//    switch (subject) {
//        case RQHomePageSubjectType_SubjectOne: {
//            switch (questionType) {
//                case RQQuestionType_Judgment: {
//                    switch (carType) {
//                        case RQHomePageCarType_Car:
//                            return @"random() limit 40";
//                        case RQHomePageCarType_Bus:
//                            return @"random() limit 40";
//                        case RQHomePageCarType_Truck:
//                            return @"random() limit 40";
//                        case RQHomePageCarType_Motorcycle:
//                            return @"random() limit 20";
//                        default:
//                            return @"random() limit 40";
//                    }
//                }
//                case RQQuestionType_SingleChoice: {
//                    switch (carType) {
//                        case RQHomePageCarType_Car:
//                            return @"random() limit 60";
//                        case RQHomePageCarType_Bus:
//                            return @"random() limit 60";
//                        case RQHomePageCarType_Truck:
//                            return @"random() limit 60";
//                        case RQHomePageCarType_Motorcycle:
//                            return @"random() limit 30";
//                        default:
//                            return @"random() limit 60";
//                    }
//                }
//                case RQQuestionType_MultipleChoice: {
//                    switch (carType) {
//                        case RQHomePageCarType_Car:
//                            return @"random() limit 0";
//                        case RQHomePageCarType_Bus:
//                            return @"random() limit 0";
//                        case RQHomePageCarType_Truck:
//                            return @"random() limit 0";
//                        case RQHomePageCarType_Motorcycle:
//                            return @"random() limit 0";
//                        default:
//                            return @"random() limit 0";
//                    }
//                }
//            }
//        }
//        case RQHomePageSubjectType_SubjectFour: {
//            switch (questionType) {
//                case RQQuestionType_Judgment: {
//                    switch (carType) {
//                        case RQHomePageCarType_Car:
//                            return @"random() limit 20";
//                        case RQHomePageCarType_Bus:
//                            return @"random() limit 20";
//                        case RQHomePageCarType_Truck:
//                            return @"random() limit 20";
//                        case RQHomePageCarType_Motorcycle:
//                            return @"random() limit 20";
//                        default:
//                            return @"random() limit 20";
//                    }
//                }
//                case RQQuestionType_SingleChoice: {
//                    switch (carType) {
//                        case RQHomePageCarType_Car:
//                            return @"random() limit 20";
//                        case RQHomePageCarType_Bus:
//                            return @"random() limit 20";
//                        case RQHomePageCarType_Truck:
//                            return @"random() limit 20";
//                        case RQHomePageCarType_Motorcycle:
//                            return @"random() limit 20";
//                        default:
//                            return @"random() limit 20";
//                    }
//                }
//                case RQQuestionType_MultipleChoice: {
//                    switch (carType) {
//                        case RQHomePageCarType_Car:
//                            return @"random() limit 10";
//                        case RQHomePageCarType_Bus:
//                            return @"random() limit 10";
//                        case RQHomePageCarType_Truck:
//                            return @"random() limit 10";
//                        case RQHomePageCarType_Motorcycle:
//                            return @"random() limit 10";
//                        default:
//                            return @"random() limit 10";
//                    }
//                }
//            }
//        }
//        default:
//            return @"random() limit 5";
//    }
//}
//
//- (RQExerciseModel *)getQuestionWithDataBase:(FMDatabase *)dataBase questionId:(NSInteger )questionId {
//    RQExerciseModel *exerciseModel;
//    FMResultSet *resultSet;
//    resultSet = [dataBase executeQuery:[NSString stringWithFormat:@"select * from question_info where _id = %ld", questionId]];
//    while ([resultSet next]) {
//        exerciseModel = [RQExerciseModel exerciseModelWithFMResultSet:resultSet];
//    }
//    return exerciseModel;
//}
@end