//
//  RQQRCodeViewController.m
//  jiaPei
//
//  Created by 张嵘 on 2021/1/21.
//  Copyright © 2021 JCZ. All rights reserved.
//

#import "RQQRCodeViewController.h"

@interface RQQRCodeViewController () <SGScanCodeDelegate, SGScanCodeSampleBufferDelegate>

@property (nonatomic, readwrite, strong) SGScanCode *scanCode;
@property (nonatomic, readwrite, strong) SGScanView *scanView;
@property (nonatomic, readwrite, strong) UILabel *promptLabel;


@property (nonatomic, readwrite, strong) UIButton *closeBtn;
@property (nonatomic, readwrite, strong) UIButton *flashlightBtn;
@property (nonatomic, readwrite, copy) RQQRCodeScanResultBlock rqQRCodeScanResultBlock;

@end

@implementation RQQRCodeViewController
#pragma mark - SystemMethods
- (void)viewDidLoad {
    [super viewDidLoad];
    [self rq_setUp];
}

- (void)viewWillAppear:(BOOL)animated {
	[super viewWillAppear:animated];
    [self start];
}

- (void)viewWillDisappear:(BOOL)animated {
	[super viewWillDisappear:animated];
}

- (void)dealloc {
    [self stop];
}

- (void)closePage {
    [self stop];
    self.scanView = nil;
    self.scanCode.delegate = nil;
    self.scanCode.sampleBufferDelegate = nil;
    self.scanCode = nil;
    self.rqQRCodeScanResultBlock = nil;
}

#pragma mark - PublicMethods
- (void)initBlock:(RQQRCodeScanResultBlock)block {
    self.rqQRCodeScanResultBlock = block;
}

#pragma mark - PrivateMethods
- (void)rq_setUp {
	self.view.backgroundColor = [UIColor blackColor];
    [self configureUI];
    [self configScanCode];
}

- (void)configureUI {
    [self.view addSubview:self.scanView];
    [self.view addSubview:self.promptLabel];
    [self.view addSubview:self.closeBtn];
    [self.view addSubview:self.flashlightBtn];
}

- (void)start {
    [self.scanCode startRunning];
    [self.scanView startScanning];
}

- (void)stop {
    [self.scanCode stopRunning];
    [self.scanView stopScanning];
}

- (void)configScanCode {
    BOOL isCameraDeviceRearAvailable = [self.scanCode checkCameraDeviceRearAvailable];
    if (isCameraDeviceRearAvailable == NO) {
        [RQ_SHARE_FUNCTION showAlertWithTitle:@"温馨提示" message:@"请在iPhone的“设置”-“隐私”-“相机”功能中，找到“极速驾培”打开相机访问权限" alertControllerStyle:UIAlertControllerStyleAlert cancelButtonTitle:@"取消" otherButtonTitles:@[@"确定"] otherButtonStyles:nil showInWindow:NO completion:^(NSUInteger selectedOtherButtonIndex) {
            if (selectedOtherButtonIndex == 0) {
                NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
                if ([[UIApplication sharedApplication] canOpenURL:url]) {
                    [[UIApplication sharedApplication] openURL:url options:@{} completionHandler:nil];
                }
            }
        }];
        return;
    }
}

- (void)flashlightBtn_action:(UIButton *)button {
    if (button.selected == NO) {
        button.selected = YES;
        [SGTorch turnOnTorch];
    } else {
        [SGTorch turnOffTorch];
        button.selected = NO;
    }
}


#pragma mark - SGScanCodeDelegate
- (void)scanCode:(SGScanCode *)scanCode result:(NSString *)result {
    [self stop];
    [scanCode playSoundEffect:@"SGQRCode.bundle/scan_end_sound.caf"];
    
    if (result == nil) {
        NSLog(@"暂未识别出二维码");
        if (self.rqQRCodeScanResultBlock) {
            self.rqQRCodeScanResultBlock(@"暂未识别出二维码", NO);
        }
    } else {
        if (self.rqQRCodeScanResultBlock) {
            __weak typeof(self) weakSelf = self;
            [self dismissViewControllerAnimated:YES completion:^{
                weakSelf.rqQRCodeScanResultBlock(result, YES);
            }];
        }
    }
}

#pragma mark - SGScanCodeSampleBufferDelegate
- (void)scanCode:(SGScanCode *)scanCode brightness:(CGFloat)brightness {
//    if (brightness < - 1.5) {
//        self.flashlightBtn.hidden = NO;
//    } else {
//        self.flashlightBtn.hidden = YES;
//        [SGTorch turnOffTorch];
//        self.flashlightBtn.selected = NO;
//    }
}

#pragma mark - LazyLoad
- (SGScanCode *)scanCode {
	if (!_scanCode) {
        _scanCode = [SGScanCode scanCode];
        // 预览视图，必须设置
        __weak typeof(self) weakSelf = self;
        _scanCode.preview = self.view;
        _scanCode.delegate = weakSelf;
        _scanCode.sampleBufferDelegate = weakSelf;
	}
	return _scanCode;
}


- (SGScanView *)scanView {
    if (!_scanView) {
        SGScanViewConfigure *configure = [[SGScanViewConfigure alloc] init];
        configure.isShowBorder = YES;
        configure.borderColor = [UIColor clearColor];
        configure.cornerColor = [UIColor whiteColor];
        configure.cornerWidth = 3;
        configure.cornerLength = 15;
        configure.isFromTop = YES;
        configure.scanline = @"SGQRCode.bundle/scan_scanline_qq";
        configure.color = [UIColor clearColor];
        
        CGFloat x = 0;
        CGFloat y = 0;
        CGFloat w = self.view.frame.size.width;
        CGFloat h = self.view.frame.size.height;
        _scanView = [[SGScanView alloc] initWithFrame:CGRectMake(x, y, w, h) configure:configure];
        [_scanView startScanning];
        _scanView.scanFrame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
    }
    return _scanView;
}

- (UILabel *)promptLabel {
	if (!_promptLabel) {
		_promptLabel = [[UILabel alloc] init];
		_promptLabel.backgroundColor = [UIColor clearColor];
		CGFloat promptLabelX = 0;
		CGFloat promptLabelY = 0.73 * self.view.frame.size.height;
		CGFloat promptLabelW = self.view.frame.size.width;
		CGFloat promptLabelH = 25;
		_promptLabel.frame = CGRectMake(promptLabelX, promptLabelY, promptLabelW, promptLabelH);
		_promptLabel.textAlignment = NSTextAlignmentCenter;
		_promptLabel.font = [UIFont boldSystemFontOfSize:13.0];
		_promptLabel.textColor = [[UIColor whiteColor] colorWithAlphaComponent:0.6];
		_promptLabel.text = @"将二维码/条码放入框内, 即可自动扫描";
	}
	return _promptLabel;
}

- (UIButton *)closeBtn {
	if (!_closeBtn) {
		_closeBtn = [UIButton buttonWithType:UIButtonTypeCustom];
		float height = 0.039 * RQ_SCREEN_HEIGHT;
		_closeBtn.frame = CGRectMake(RQ_SCREEN_WIDTH - 16 - height, kNavBarHeight, height, height);
		[_closeBtn setImage:[UIImage imageNamed:@"closewhite"] forState:UIControlStateNormal];
        __weak typeof(self) weakSelf = self;
		[_closeBtn setTapActionWithBlock:^(UITapGestureRecognizer *tap) {
			[weakSelf dismissViewControllerAnimated:YES completion:nil];
		}];
	}
	return _closeBtn;
}

- (UIButton *)flashlightBtn {
    if (!_flashlightBtn) {
        // 添加闪光灯按钮
        _flashlightBtn = [UIButton buttonWithType:(UIButtonTypeCustom)];
        CGFloat flashlightBtnW = 50;
        CGFloat flashlightBtnH = 70;
        CGFloat flashlightBtnX = 0.5 * (self.view.frame.size.width - flashlightBtnW);
        CGFloat flashlightBtnY = 0.80 * self.view.frame.size.height;
        _flashlightBtn.frame = CGRectMake(flashlightBtnX, flashlightBtnY, flashlightBtnW, flashlightBtnH);
        [_flashlightBtn setImage:[UIImage imageNamed:@"wc_scan_torch"] withTitle:@"轻触照亮" textColor:UIColorWhite Font:15 fotState:UIControlStateNormal];
        [_flashlightBtn setImage:[UIImage imageNamed:@"wc_scan_torch_hl"] withTitle:@"轻触关闭" textColor:UIColorWhite Font:15 fotState:UIControlStateSelected];
        [_flashlightBtn addTarget:self action:@selector(flashlightBtn_action:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _flashlightBtn;
}
@end