//
//  BaseTableView.m
//  keyBoard
//

#import "BaseTableView.h"

// 可选引入：若未集成 DZNEmptyDataSet，此处不会编译进来
#if __has_include(<DZNEmptyDataSet/UIScrollView+EmptyDataSet.h>)
#import <DZNEmptyDataSet/UIScrollView+EmptyDataSet.h>
#define KB_HAS_DZN 1
#else
#define KB_HAS_DZN 0
#endif

// 可选引入：LYEmptyView（通过 Pod 集成），用于空态视图的“自动显隐+属性配置”方案
#if __has_include(<LYEmptyView/UIView+Empty.h>)
#import <LYEmptyView/UIView+Empty.h>
#import <LYEmptyView/LYEmptyView.h>
#define KB_HAS_LY 1
#else
#define KB_HAS_LY 0
#endif

@interface BaseTableView ()
#if KB_HAS_DZN
<DZNEmptyDataSetSource, DZNEmptyDataSetDelegate>
#endif
@end

@implementation BaseTableView

- (instancetype)initWithFrame:(CGRect)frame style:(UITableViewStyle)style {
    if (self = [super initWithFrame:frame style:style]) {
        [self commonInit];
    }
    return self;
}



- (void)commonInit {
    // iOS 15+ 头部默认留白，统一归零（老系统无此属性，不会影响）
    self.sectionHeaderTopPadding = 0;
    self.backgroundColor = [UIColor whiteColor];
    self.separatorStyle = UITableViewCellSeparatorStyleSingleLine;
    self.estimatedRowHeight = 0;
    self.estimatedSectionHeaderHeight = 0;
    self.estimatedSectionFooterHeight = 0;
    self.keyboardDismissMode = UIScrollViewKeyboardDismissModeOnDrag;

    // 空数据占位默认配置（保持“活”的：可开可关）
    _useEmptyDataSet = YES;                 // 默认开启
    _emptyShouldAllowScroll = YES;          // 默认允许滚动
    _emptyVerticalOffset = 0;               // 默认不偏移
    _emptyTitleText = @"暂无数据";          // 默认标题

#if KB_HAS_DZN
    self.emptyDataSetSource = self;
    self.emptyDataSetDelegate = self;
#endif
}

#pragma mark - Public

- (void)kb_reloadEmptyDataSet {
#if KB_HAS_DZN
    [self reloadEmptyDataSet];
#endif
}

- (void)setUseEmptyDataSet:(BOOL)useEmptyDataSet {
    _useEmptyDataSet = useEmptyDataSet;
#if KB_HAS_DZN
    // 切换时，动态挂/卸源委托
    self.emptyDataSetSource = useEmptyDataSet ? (id<DZNEmptyDataSetSource>)self : nil;
    self.emptyDataSetDelegate = useEmptyDataSet ? (id<DZNEmptyDataSetDelegate>)self : nil;
    [self reloadEmptyDataSet];
#endif
}

#pragma mark - DZNEmptyDataSet (仅当库存在时编译)
#if KB_HAS_DZN

// 是否展示空视图
- (BOOL)emptyDataSetShouldDisplay:(UIScrollView *)scrollView {
    return self.useEmptyDataSet;
}

// 标题
- (NSAttributedString *)titleForEmptyDataSet:(UIScrollView *)scrollView {
    NSString *title = self.emptyTitleText ?: @"";
    NSDictionary *attrs = @{ NSFontAttributeName : [UIFont systemFontOfSize:16 weight:UIFontWeightSemibold],
                             NSForegroundColorAttributeName : [UIColor colorWithWhite:0.5 alpha:1.0] };
    return [[NSAttributedString alloc] initWithString:title attributes:attrs];
}

// 描述
- (NSAttributedString *)descriptionForEmptyDataSet:(UIScrollView *)scrollView {
    if (self.emptyDescriptionText.length == 0) return nil;
    NSDictionary *attrs = @{ NSFontAttributeName : [UIFont systemFontOfSize:14],
                             NSForegroundColorAttributeName : [UIColor colorWithWhite:0.6 alpha:1.0] };
    return [[NSAttributedString alloc] initWithString:self.emptyDescriptionText attributes:attrs];
}

// 图片
- (UIImage *)imageForEmptyDataSet:(UIScrollView *)scrollView {
    return self.emptyImage;
}

// 按钮标题
- (NSAttributedString *)buttonTitleForEmptyDataSet:(UIScrollView *)scrollView forState:(UIControlState)state {
    if (self.emptyButtonTitle.length == 0) return nil;
    UIColor *color = (state == UIControlStateHighlighted) ? [UIColor darkTextColor] : [UIColor colorWithRed:0.22 green:0.49 blue:0.96 alpha:1.0];
    NSDictionary *attrs = @{ NSFontAttributeName : [UIFont systemFontOfSize:15 weight:UIFontWeightSemibold],
                             NSForegroundColorAttributeName : color };
    return [[NSAttributedString alloc] initWithString:self.emptyButtonTitle attributes:attrs];
}

// 垂直位置偏移
- (CGFloat)verticalOffsetForEmptyDataSet:(UIScrollView *)scrollView {
    return self.emptyVerticalOffset;
}

// 行为
- (BOOL)emptyDataSetShouldAllowScroll:(UIScrollView *)scrollView { return self.emptyShouldAllowScroll; }
- (BOOL)emptyDataSetShouldAllowTouch:(UIScrollView *)scrollView { return YES; }

- (void)emptyDataSet:(UIScrollView *)scrollView didTapView:(UIView *)view {
    if (self.emptyDidTapView) self.emptyDidTapView();
}

- (void)emptyDataSet:(UIScrollView *)scrollView didTapButton:(UIButton *)button {
    if (self.emptyDidTapButton) self.emptyDidTapButton();
}

#endif

// MARK: - LYEmptyView 快速挂载（与 DZN 二选一）
- (void)kb_makeDefaultEmptyViewWithImage:(UIImage *)image
                                   title:(NSString *)title
                                  detail:(NSString *)detail
                             buttonTitle:(NSString *)buttonTitle
                              tapHandler:(KBEmptyAction)tapHandler
                           buttonHandler:(KBEmptyAction)buttonHandler {
#if KB_HAS_LY
    // 关闭 DZN，避免两套空态叠加
    self.useEmptyDataSet = NO;

    // 默认文案
    NSString *t = title ?: @"暂无数据";

    LYEmptyView *ev = nil;
    if (buttonTitle.length > 0) {
        // 带按钮（优先 block 方式）
        __weak typeof(self) weakSelf = self;
        ev = [LYEmptyView emptyActionViewWithImage:image
                                          titleStr:t
                                         detailStr:detail ?: @""
                                       btnTitleStr:buttonTitle
                                     btnClickBlock:^{ if (buttonHandler) buttonHandler(); [weakSelf setNeedsLayout]; }];
    } else {
        // 无按钮
        ev = [LYEmptyView emptyViewWithImage:image titleStr:t detailStr:detail ?: @""];
    }

    // 点击空白区域
    if (tapHandler) {
        ev.tapEmptyViewBlock = ^{ tapHandler(); };
    }

    // 统一样式（可按需微调）
    ev.emptyViewIsCompleteCoverSuperView = NO; // 不全屏覆盖，按内容大小布局
    ev.ignoreContentInset = YES;               // 忽略 inset，避免导航/安全区影响
    ev.contentViewOffset = -10;                // 轻微上移
    ev.subViewMargin = 14;                     // 子控件间距
    ev.titleLabFont = [UIFont systemFontOfSize:16 weight:UIFontWeightSemibold];
    ev.titleLabTextColor = [UIColor colorWithWhite:0.45 alpha:1.0];
    ev.detailLabFont = [UIFont systemFontOfSize:14];
    ev.detailLabTextColor = [UIColor colorWithWhite:0.6 alpha:1.0];
    ev.detailLabLineSpacing = 3;
    ev.detailLabMaxLines = 2;
    ev.actionBtnFont = [UIFont systemFontOfSize:15 weight:UIFontWeightSemibold];
    ev.actionBtnCornerRadius = 6;
    ev.actionBtnBorderWidth = 1;
    ev.actionBtnBorderColor = [UIColor colorWithWhite:0.88 alpha:1.0];
    ev.actionBtnTitleColor = [UIColor colorWithRed:0.22 green:0.49 blue:0.96 alpha:1.0];
    ev.actionBtnBackGroundColor = [UIColor whiteColor];
    ev.actionBtnHorizontalMargin = 20; // 自动宽度：文字 + padding*2

    // 自动显隐交由控制层（网络请求）
    ev.autoShowEmptyView = NO;

    self.ly_emptyView = (LYEmptyView *)ev;
#else
    // 未集成 LYEmptyView 时不做任何处理，保持兼容
    (void)image; (void)title; (void)detail; (void)buttonTitle; (void)tapHandler; (void)buttonHandler;
#endif
}

@end