//
//  SellyVideoCallConferenceController.m
//  SellyCloudSDK_Example
//
//  Created by Caleb on 11/11/25.
//  Copyright © 2025 Caleb. All rights reserved.
//

#import "SellyVideoCallConferenceController.h"
#import <SellyCloudSDK/SellyCloudManager.h>
#import "FUManager.h"
#import "UIView+SellyCloud.h"
#import "SLSVideoGridView.h"
#import "TokenGenerator.h"

@interface SellyVideoCallConferenceController ()<SellyRTCSessionDelegate>

// 你的 WebRTC 会话对象
@property (nonatomic, strong) SellyRTCSession *session;

@property (nonatomic, assign) BOOL localVideoEnable;
@property (nonatomic, assign) BOOL localAudioEnable;

@property (weak, nonatomic) IBOutlet SLSVideoGridView *grid;
@property (weak, nonatomic) IBOutlet UILabel *duration;

@end

@implementation SellyVideoCallConferenceController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.title = @"音视频会议";
    // Do any additional setup after loading the view.
    
    self.session.delegate = self;
    if (self.videoConfig == nil) {
        self.videoConfig = SellyRTCVideoConfiguration.defaultConfig;
    }
    self.session.videoConfig = self.videoConfig;
    
    NSString *token = [TokenGenerator generateTokenWithUserId:SellyRTCEngine.sharedEngine.userId callId:self.channelId];
    [self.session startWithChannelId:self.channelId token:token];
    
    //开启视频
    [self onCameraClick:nil];
    
    //设置扬声器播放
    {
        //使用这种方案，通话接通前无法在receiver和speaker直接来回切换，强制扬声器
//        [self.session setAudioOutput:AVAudioSessionPortOverrideSpeaker];
    }
    
    {
        //使用这种方案，通话接通前可以在receiver和speaker直接来回切换
        NSError *error;
        [AVAudioSession.sharedInstance setCategory:AVAudioSessionCategoryPlayAndRecord mode:AVAudioSessionModeVoiceChat options:AVAudioSessionCategoryOptionDuckOthers|AVAudioSessionCategoryOptionAllowBluetooth|AVAudioSessionCategoryOptionMixWithOthers error:&error];
        [self.session setAudioOutput:AVAudioSessionPortOverrideSpeaker];
    }
    //显示本地view
    [self attachLocalStream];
    self.localAudioEnable = true;
}

- (void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
    [self.session end];
}

- (IBAction)onSpeakerClick:(id)sender {
    //如果没有外接设备，可以直接调用这个方法在听筒和扬声器直接来回切换
    AVAudioSessionPort currentPort = AVAudioSession.sharedInstance.currentRoute.outputs.firstObject.portType;
    if ([currentPort isEqualToString:AVAudioSessionPortBuiltInSpeaker]) {
        [self.session setAudioOutput:AVAudioSessionPortOverrideNone];
    }
    else {
        [self.session setAudioOutput:AVAudioSessionPortOverrideSpeaker];
    }
}

- (IBAction)onCameraClick:(id)sender {
    [self.session enableLocalVideo:!self.localVideoEnable];
    self.localVideoEnable = !self.localVideoEnable;
}

- (IBAction)onSwitchClick:(id)sender {
    [self.session switchCamera];
}

- (IBAction)onMuteClick:(id)sender {
    [self.session enableLocalAudio:!self.localAudioEnable];
    self.localAudioEnable = !self.localAudioEnable;
}


- (void)attachLocalStream {
    NSString *uid = SellyRTCEngine.sharedEngine.userId;

    // 1. Grid 布局请求一个格子
    SLSVideoTileView *container = [self.grid ensureRenderContainerForUID:uid
                                                   displayName:uid];

    // 2. 将本地视频绑定到 container
    SellyRtcVideoCanvas *canvas = [[SellyRtcVideoCanvas alloc] init];
    // 你的接口要求 userId，这里用字符串版本地 uid
    canvas.userId = uid;
    canvas.view = container.contentView;
    [self.session setLocalCanvas:canvas];
}

#pragma marks SLSVideoEngineEvents

#pragma mark - SellyRTCSessionDelegate 回调桥接到 SLSVideoEngineEvents

/// 无法恢复的错误
- (void)rtcSession:(SellyRTCSession *)session onError:(NSError *)error {
    // 这里看你要不要额外给业务一个错误回调，可以扩展 SLSVideoEngineEvents
    NSLog(@"rtc.onerror == %@",error);
    [self.view showToast:error.localizedDescription];
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        [self.navigationController popViewControllerAnimated:true];
    });
}

/// 远端用户加入
- (void)rtcSession:(SellyRTCSession *)session onUserJoined:(NSString *)userId {
    SLSVideoTileView *container = [self.grid ensureRenderContainerForUID:userId
                                                   displayName:userId];
    SellyRtcVideoCanvas *canvas = [[SellyRtcVideoCanvas alloc] init];
    canvas.userId = userId;
    canvas.view = container.contentView;
    [self.session setRemoteCanvas:canvas];
}

/// 远端用户离开
- (void)rtcSession:(SellyRTCSession *)session onUserLeave:(NSString *)userId {
    [self.grid detachUID:userId];
}

- (void)rtcSession:(SellyRTCSession *)session audioEnabled:(BOOL)enabled userId:(NSString *)userId {
    NSLog(@"userId == %@ audioEnabled == %d",userId,enabled);
}

- (void)rtcSession:(SellyRTCSession *)session videoEnabled:(BOOL)enabled userId:(NSString *)userId {
    NSLog(@"userId == %@ videoEnabled == %d",userId,enabled);
}

/// 收到自定义消息
- (void)rtcSession:(SellyRTCSession *)session didReceiveMessage:(NSString *)message userId:(NSString *)userId {
    NSLog(@"recv message from %@: %@", userId, message);
}

/// 连接状态变化
- (void)rtcSession:(SellyRTCSession *)session connectionStateChanged:(SellyRTCConnectState)state userId:(nullable NSString *)userId {
    NSLog(@"ice.connectionStateChanged == %ld",state);
}

- (void)rtcSession:(SellyRTCSession *)session onRoomConnectionStateChanged:(SellyRoomConnectionState)state {
    NSLog(@"####onSocketStateChanged == %ld",(long)state);
}

/// 视频前处理（如果你要做美颜，可以在这里转发给业务；目前和 UI 层无关）
- (CVPixelBufferRef)rtcSession:(SellyRTCSession *)session onCaptureVideoFrame:(CVPixelBufferRef)pixelBuffer {
    // 默认不处理，直接返回原始帧
    return pixelBuffer;
}

/// 统计信息（如果你的 SellyRTCP2pStats 里有音量相关信息，可以在这里转成 videoEngineVolumeIndication）
- (void)rtcSession:(SellyRTCSession *)session onStats:(SellyRTCP2pStats *)stats userId:(nullable NSString *)userId {
    // TODO: 如果 stats 里有本地 / 远端音量，可在这里构造一个 dict 调用:
    // if ([self.eventsDelegate respondsToSelector:@selector(videoEngineVolumeIndication:)]) { ... }
    SLSVideoTileView *view = [self.grid ensureRenderContainerForUID:userId displayName:nil];
    view.stats = stats;
}

- (void)rtcSession:(SellyRTCSession *)session onDuration:(NSInteger)duration {
    self.duration.text = [NSString stringWithFormat:@"%02ld:%02ld",duration/60,duration%60];
}

- (void)rtcSession:(SellyRTCSession *)session tokenWillExpire:(NSString *)token {
    NSString *newToken = [TokenGenerator generateTokenWithUserId:SellyRTCEngine.sharedEngine.userId callId:self.channelId];
    [session renewToken:newToken];
}

- (void)rtcSession:(SellyRTCSession *)session tokenExpired:(NSString *)token {
    NSString *newToken = [TokenGenerator generateTokenWithUserId:SellyRTCEngine.sharedEngine.userId callId:self.channelId];
    [session renewToken:newToken];
}

- (SellyRTCSession *)session {
    if (!_session) {
        _session = [[SellyRTCSession alloc] initWithType:false];
    }
    return _session;
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end