//
//  FLFindController.m
//  FirstLink
//
//  Created by jack on 15/8/21.
//  Copyright (c) 2015年 FirstLink. All rights reserved.
//

#import "FLExploreController.h"
#import "FLControllerHelper.h"
#import "FLProgressHUDHelper.h"

#import "FKTopicController.h"
#import "PindanDetailController.h"
#import "FKProDetailController.h"
#import "FKExploreListController.h"

#import "FKDownloadRemotefile.h"
#import "FKDownloadStore.h"

#import "FKExploreTopicListItem.h"
#import "FKExploreRequest.h"
#import "FKExploreReform.h"
#import "FKExploreViewModel.h"

#import "FKHistoryKeywordView.h"
#import "FKExploreCollectionCell.h"
#import "FKExploreTableViewCell.h"

#import <HMSegmentedControl/HMSegmentedControl.h>

static NSString *const FKExploreCollectionCellIdentify = @"FKExploreCollectionCellIdentify";
static NSString *const FKExploreTableViewCellIdentify  = @"FKExploreTableViewCellIdentify";

@interface FLExploreController ()
<FKExploreCellDelegate, UICollectionViewDataSource, UICollectionViewDelegate, UITableViewDataSource, FLNetworkDelegate>

@property (nonatomic, strong) HMSegmentedControl   *segmentedControl;
@property (nonatomic, strong) UICollectionView     *collectionView;

@property (nonatomic, strong) FKExploreViewModel    *viewModel;

@end

@implementation FLExploreController

- (void)viewDidLoad{
    [super viewDidLoad];
    
    [self addAllSubviews];
    [self requestExploreTopicTags];
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    
    self.navigationItem.title = @"专题";
    [self.navigationController setNavigationBarHidden:NO animated:YES];
}

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

#pragma mark - Request

- (void)requestExploreTopicTags {
    [FKExploreRequest requestExploreTopicTags:FKExploreRequestTopicTags delegate:self];
}

- (void)requestExploreTopicList:(int)identify index:(NSInteger)index startRow:(NSString *)startRow {
    NSString *tagID = [self.viewModel topicTagIDAtIndex:index];
    [self.hudView show:YES];
    [FKExploreRequest requestExploreTopicDetail:identify
                                          tagID:tagID
                                       startRow:startRow
                                       pageSize:[NSString stringWithFormat:@"%d", FKExploreRequestPageSize]
                                       delegate:self
                                       userInfo:@{FKExploreTopicTagKey: tagID}];
}

- (void)checkAndRequestTopicList {
    NSString *tagID = [self.viewModel topicTagIDAtIndex:self.segmentedControl.selectedSegmentIndex];
    if (tagID.length > 0) {
        NSMutableArray *cacheArray = [self.viewModel.topicListCache valueForKey:tagID];
        if (cacheArray.count == 0) {
            [self requestExploreTopicList:FKExploreRequestTopicList
                                    index:self.segmentedControl.selectedSegmentIndex
                                 startRow:@"0"];
        }
    }
    
}

#pragma mark - Response

- (void)networkDidReceiveError:(NSError*)error identify:(int)identify header:(MSGHeader*)header {
    [self.hudView hide:NO];
    [self finishLoadingData];
    
    [FLProgressHUDHelper showText:header.msg inView:self.view];
}

- (void)networkDidSuccessResponse:(NSDictionary*)response identify:(int)identify header:(MSGHeader*)header userInfo:(NSDictionary *)userInfo {
    [self.hudView hide:NO];
    self.refreshControl.bottomEnabled = YES;
    
    if (header.code.intValue == RESPONSE_MSG_NORMAL) {
        if (identify == FKExploreRequestTopicTags) {
            self.viewModel.topicTagArray = [FKExploreReform parserExploreTopicTags:response];
            self.segmentedControl.sectionTitles = self.viewModel.sectionTitlesArray;
            [self.segmentedControl setNeedsDisplay];
            
            [self requestExploreTopicList:FKExploreRequestTopicList index:0 startRow:@"0"];
        } else {
            [self finishLoadingData];
            
            if (identify == FKExploreRequestTopicList) {
                NSMutableArray *items = [FKExploreReform parserExploreTopicList:response];
                NSString *tagID = [userInfo valueForKey:FKExploreTopicTagKey];
                if (tagID && items.count > 0) {
                    [self.viewModel.topicListCache setValue:items forKey:tagID];
                    [self.collectionView reloadData];
                }
            } else if (identify == FKExploreRequestTopicListNextPage) {
                NSMutableArray *items = [FKExploreReform parserExploreTopicList:response];
                if (items.count > 0) {
                    NSString *tagID = [userInfo valueForKey:FKExploreTopicTagKey];
                    if (tagID) {
                        NSMutableArray *mutableArray = [self.viewModel.topicListCache valueForKey:tagID];
                        [mutableArray addObjectsFromArray:items];
                        [self.collectionView reloadData];
                    }
                } else {
                    self.refreshControl.bottomEnabled = NO;
                }
            }
        }
    } else {
        [self finishLoadingData];
        [FLProgressHUDHelper showText:header.msg inView:self.view];
    }
}

#pragma mark - FKExploreCellDelegate

- (void)refreshControl:(FKRefreshControl *)refreshControl didEngageRefreshDirection:(RefreshDirection)direction {
    self.refreshControl = refreshControl;
    
    if (direction == RefreshDirectionTop) {
        [self.viewModel.contensOffsetArray removeAllObjects];
        if (self.segmentedControl.selectedSegmentIndex == 0) {
            [self requestExploreTopicTags];
        } else {
            [self requestExploreTopicList:FKExploreRequestTopicList
                                    index:self.segmentedControl.selectedSegmentIndex
                                 startRow:@"0"];
        }
    } else if (direction == RefreshDirectionBottom) {
        NSString *tagID = [self.viewModel topicTagIDAtIndex:self.segmentedControl.selectedSegmentIndex];
        [self requestExploreTopicList:FKExploreRequestTopicListNextPage
                                index:self.segmentedControl.selectedSegmentIndex
                             startRow:[self.viewModel startRowWithTagID:tagID]];
    }
}

// 专题大图点击事件
- (void)exploreCellClickItem:(NSInteger)index {
    NSString *tagID = [self.viewModel topicTagIDAtIndex:self.segmentedControl.selectedSegmentIndex];
    NSArray *topicList = [self.viewModel validTopicListWithTagID:tagID];
    if (index < topicList.count) {
        FKExploreTopicListItem *item = topicList[index];
        
        FKTopicController *controller = [[FKTopicController alloc]init];
        controller.topicId = item.topicID;
        [self pushViewController:controller];
    }
}

#pragma mark - UICollectionViewDataSource

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
    return self.viewModel.topicTagArray.count;
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    FKExploreCollectionCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:FKExploreCollectionCellIdentify
                                                                              forIndexPath:indexPath];
    [cell.tableView registerClass:[FKExploreTableViewCell class] forCellReuseIdentifier:FKExploreTableViewCellIdentify];
    
    cell.delegate = self;
    cell.viewModel = self.viewModel;
    cell.tableView.dataSource = self;
    cell.tableView.tag = indexPath.row;
    
    [cell.tableView reloadData];
    
    return cell;
}

#pragma mark - UICollectionViewDelegate

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
    if (scrollView == self.collectionView) {
        CGFloat offsetX = scrollView.contentOffset.x;
        int index = (int)((offsetX + 1)/UISCREENWIDTH);
        [self.segmentedControl setSelectedSegmentIndex:index animated:YES];
        
        [self checkAndRequestTopicList];
    }
}

#pragma mark - UITableViewDataSource

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    NSInteger index = tableView.tag;
    NSString *tagID = [self.viewModel topicTagIDAtIndex:index];
    return [self.viewModel validTopicListWithTagID:tagID].count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    FKExploreTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:FKExploreTableViewCellIdentify];
    
    NSInteger index = tableView.tag;
    NSString *tagID = [self.viewModel topicTagIDAtIndex:index];
    
    [cell configCell:[self.viewModel validTopicListItemWithTagID:tagID atIndex:indexPath.row]];
    cell.collectionView.delegate = self;
    cell.collectionView.tag = indexPath.row;
    
    NSString *tag = [NSString stringWithFormat:@"%ld", (long)tableView.tag];
    CGFloat offset = [self.viewModel contentOffsetForKey:tag.hash^indexPath.hash];
    [cell.collectionView setContentOffset:CGPointMake(offset, 0) animated:NO];
    
    return cell;
}

#pragma mark - UITableViewDelegate

/**
 *  单个专题下商品列表点击事件
 */
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    if (collectionView != self.collectionView) {
        NSInteger segmentIndex = self.segmentedControl.selectedSegmentIndex;
        NSString *tagID = [self.viewModel topicTagIDAtIndex:segmentIndex];
        NSArray *topicArray = [self.viewModel validTopicListWithTagID:tagID];
        
        if (collectionView.tag < topicArray.count) {
            FKExploreTopicListItem *item = topicArray[collectionView.tag];
            
            if (indexPath.row < item.subItemArray.count) {
                UIViewController *controller;
                FKExploreTopicListSubItem *subItem = item.subItemArray[indexPath.row];
                if ([item.objectType isEqualToString:@"10"]) {
                    controller = [[FKProDetailController alloc] initWithProductID:subItem.itemID];
                } else {
                    controller = [[PindanDetailController alloc] initWithUserID:subItem.userID postID:subItem.itemID];
                }
                [self pushViewController:controller];
            }
            if (indexPath.row == item.subItemArray.count) {
                if ([self respondsToSelector:@selector(exploreCellClickItem:)]) {
                    [self exploreCellClickItem:collectionView.tag];
                }
            }
        }
    }
}

#pragma mark - Property

- (HMSegmentedControl *)segmentedControl {
    if (!_segmentedControl) {
        _segmentedControl                              = [HMSegmentedControl new];
        _segmentedControl.selectionIndicatorLocation   = HMSegmentedControlSelectionIndicatorLocationDown;
        _segmentedControl.selectionIndicatorHeight     = 2;
        _segmentedControl.segmentEdgeInset             = UIEdgeInsetsMake(0, 15, -8, 15);
        _segmentedControl.selectionIndicatorEdgeInsets = UIEdgeInsetsMake(0, 40, -8, 40);
        _segmentedControl.selectionIndicatorColor      = UIColorFromRGB(0xff6362);
        _segmentedControl.selectionStyle               = HMSegmentedControlSelectionStyleTextWidthStripe;
        _segmentedControl.selectedTitleTextAttributes  = @{NSForegroundColorAttributeName   : [UIColor blackColor],
                                                           NSFontAttributeName              : [UIFont systemFontOfSize:14]};
        _segmentedControl.titleTextAttributes          = @{NSForegroundColorAttributeName : [UIColor grayColor],
                                                           NSFontAttributeName            : [UIFont systemFontOfSize:14]};
        _segmentedControl.borderType                   = HMSegmentedControlBorderTypeBottom;
        _segmentedControl.borderColor                  = UIColorFromRGB(0xe5e5e5);
        _segmentedControl.borderWidth                  = 0.5;


        _segmentedControl.type                         = HMSegmentedControlTypeText;
        _segmentedControl.segmentWidthStyle            = HMSegmentedControlSegmentWidthStyleDynamic;
        
        WeakSelf(weakSelf);
        _segmentedControl.indexChangeBlock = ^(NSInteger index) {
            if (index < (weakSelf.viewModel.topicTagArray.count)) {
                [weakSelf checkAndRequestTopicList];
                [weakSelf.collectionView setContentOffset:CGPointMake(UISCREENWIDTH*index, 0) animated:YES];
            }
        };
    }
    return _segmentedControl;
}

- (UICollectionView *)collectionView {
    if (!_collectionView) {
        CGFloat height = (UISCREENHEIGH - 44
                          - CGRectGetHeight([UIApplication sharedApplication].statusBarFrame)
                          - CGRectGetHeight(self.navigationController.navigationBar.frame));
        
        UICollectionViewFlowLayout *layout = [UICollectionViewFlowLayout new];
        [layout setScrollDirection:UICollectionViewScrollDirectionHorizontal];
        layout.minimumLineSpacing = 0;
        layout.minimumInteritemSpacing = 0;
        layout.itemSize = CGSizeMake(UISCREENWIDTH, height);
        layout.sectionInset = UIEdgeInsetsZero;
        
        _collectionView                                = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:layout];
        _collectionView.showsVerticalScrollIndicator   = NO;
        _collectionView.pagingEnabled                  = YES;
        
        _collectionView.delegate                       = self;
        _collectionView.dataSource                     = self;
        
        _collectionView.backgroundColor                = [UIColor whiteColor];
        _collectionView.contentInset                   = UIEdgeInsetsZero;
        
        [_collectionView registerClass:[FKExploreCollectionCell class] forCellWithReuseIdentifier:FKExploreCollectionCellIdentify];
    }
    return _collectionView;
}

- (FKExploreViewModel *)viewModel {
    if (!_viewModel) {
        _viewModel = [FKExploreViewModel new];
    }
    return _viewModel;
}

#pragma mark - Layout

- (void)addAllSubviews {
    [self.view addSubview:self.segmentedControl];
    [self.segmentedControl mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.top.right.equalTo(self.view);
        make.height.mas_equalTo(44);
    }];
    
    [self.view addSubview:self.collectionView];
    [self.collectionView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.bottom.right.equalTo(self.view);
        make.top.equalTo(self.segmentedControl.mas_bottom);
    }];
}

- (void)pushViewController:(UIViewController*)controller {
    controller.hidesBottomBarWhenPushed = YES;
    dispatch_async(dispatch_get_main_queue(), ^{
        [[FLControllerHelper currentController].navigationController pushViewController:controller animated:YES];
    });
}


@end