//
//  KeyboardViewController+Layout.m
//  CustomKeyboard
//
//  Created by Codex on 2026/02/22.
//

#import "KeyboardViewController+Private.h"

// 以 375 宽设计稿为基准的键盘总高度
static const CGFloat kKBKeyboardBaseHeight = 250.0f;
static const CGFloat kKBChatPanelHeight = 180;

@implementation KeyboardViewController (Layout)

- (CGFloat)kb_portraitWidth {
  CGSize s = [UIScreen mainScreen].bounds.size;
  return MIN(s.width, s.height);
}

- (CGFloat)kb_keyboardHeightForWidth:(CGFloat)width {
  if (width <= 0) {
    width = KB_DESIGN_WIDTH;
  }
  CGFloat scale = width / KB_DESIGN_WIDTH;
  CGFloat baseHeight = kKBKeyboardBaseHeight * scale;
  CGFloat chatHeight = kKBChatPanelHeight * scale;
  if (self.chatPanelVisible) {
    return baseHeight + chatHeight;
  }
  return baseHeight;
}

- (CGFloat)kb_keyboardBaseHeightForWidth:(CGFloat)width {
  if (width <= 0) {
    width = KB_DESIGN_WIDTH;
  }
  CGFloat scale = width / KB_DESIGN_WIDTH;
  return kKBKeyboardBaseHeight * scale;
}

- (CGFloat)kb_chatPanelHeightForWidth:(CGFloat)width {
  if (width <= 0) {
    width = KB_DESIGN_WIDTH;
  }
  CGFloat scale = width / KB_DESIGN_WIDTH;
  return kKBChatPanelHeight * scale;
}

- (void)kb_updateKeyboardLayoutIfNeeded {
  CGFloat portraitWidth = [self kb_portraitWidth];
  CGFloat keyboardHeight = [self kb_keyboardHeightForWidth:portraitWidth];
  CGFloat keyboardBaseHeight =
      [self kb_keyboardBaseHeightForWidth:portraitWidth];
  CGFloat chatPanelHeight = [self kb_chatPanelHeightForWidth:portraitWidth];
  CGFloat containerWidth = CGRectGetWidth(self.view.superview.bounds);
  if (containerWidth <= 0) {
    containerWidth = CGRectGetWidth(self.view.window.bounds);
  }
  if (containerWidth <= 0) {
    containerWidth = CGRectGetWidth([UIScreen mainScreen].bounds);
  }

  BOOL widthChanged = (fabs(self.kb_lastPortraitWidth - portraitWidth) >= 0.5);
  BOOL heightChanged =
      (fabs(self.kb_lastKeyboardHeight - keyboardHeight) >= 0.5);
  if (!widthChanged && !heightChanged && containerWidth > 0 &&
      self.kb_widthConstraint.constant == containerWidth) {
    return;
  }
  self.kb_lastPortraitWidth = portraitWidth;
  self.kb_lastKeyboardHeight = keyboardHeight;

  if (self.kb_heightConstraint) {
    self.kb_heightConstraint.constant = keyboardHeight;
  }
  if (containerWidth > 0 && self.kb_widthConstraint) {
    self.kb_widthConstraint.constant = containerWidth;
  }
  if (self.contentWidthConstraint) {
    [self.contentWidthConstraint setOffset:portraitWidth];
  }
  if (self.contentHeightConstraint) {
    [self.contentHeightConstraint setOffset:keyboardHeight];
  }
  if (self.keyBoardMainHeightConstraint) {
    [self.keyBoardMainHeightConstraint setOffset:keyboardBaseHeight];
  }
  if (self.chatPanelHeightConstraint) {
    [self.chatPanelHeightConstraint setOffset:chatPanelHeight];
  }
  [self.view layoutIfNeeded];
}

@end