# -*- encoding : utf-8 -*-
module ChaWork
  module Basic
    def main
      UIApplication.sharedApplication.delegate
    end

    def push(view, bool=true, hide=true)
      view.hidesBottomBarWhenPushed = hide
      self.navigationController.pushViewController(view, animated:bool)
    end

    def show(view, bool=true)
      # NOTE: -[UIViewController presentModalViewController] is deperated!
      self.presentViewController(view, animated:bool, completion: nil)
      # self.presentModalViewController(view, animated:true)
    end

    def hide(bool=true)
      self.dismissModalViewControllerAnimated(bool)
    end

    def pop(bool=true)
      self.navigationController.popViewControllerAnimated(bool)
    end

    def pop_to_root(bool=true)
      self.navigationController.popToRootViewControllerAnimated(bool)
    end


    # '0,0,0,0' = 'x,y,w,h', 若x为负数则表示向右对齐, 若为负数，则表示view.height - 数值

    def get_frame(str)
      if str.nil?
        warn('frame为nil')
        return [[0,0],[0,0]]
      end

      return str if str.class == Array

      frame = str.split(',')

      x = get_value(frame[0]) 
      y = get_value(frame[1])
      width = get_value(frame[2])
      height= get_value(frame[3])
      [[x, y], [width, height]]
    end

    # 格式，100/80, /号前是4寸屏值，/号后是3.5寸屏值
    def get_value(val)
      if val.nil?
        NSLog("frame error, missing")
        return 0 
      end
      array = val.split("/")
      # 若只有一个值，直接返回
      return val.to_i if array.length == 1 
      return UIScreen.mainScreen.bounds.size.height > 480 ? array[0].to_i : array[1].to_i
    end

    alias _ get_frame

    def full_view(color='#FFFFFF', opacity=1)
      frame = [[0,0], [UIScreen.mainScreen.bounds.size.width, UIScreen.mainScreen.bounds.size.height]] 
      view  = UIView.alloc.initWithFrame(frame)
      view.backgroundColor = "#{color}".uicolor.colorWithAlphaComponent(opacity)
      view
    end

    def create_view(frame, color='#FFFFFF', opacity=1, shadow=false)
      frame = get_frame(frame)
      view = UIView.alloc.initWithFrame(frame)
      opacity = 1 if opacity.nil?
      view.backgroundColor = "#{color}".uicolor.colorWithAlphaComponent(opacity)
      if shadow
        #view.layer.masksToBounds = NO
        #view.layer.cornerRadius = 8
        view.layer.shadowOffset = CGSizeMake(1, 2)
        view.layer.shadowRadius = 1
        view.layer.shadowOpacity = 0.3
      end
      view
    end

    def bottom_line(frame, color='#ECECEC')
      frame     = get_frame(frame)
      new_frame = [[frame[0][0], frame[0][1] + frame[1][1] - 0.5], [frame[1][0], 0.5]]
      bg = create_view(new_frame, color, 1)
      bg.autoresizingMask = UIViewAutoresizingFlexibleTopMargin
      bg
    end

    def footer(color='#FFFFFF')
      view = UIView.alloc.init
      view.backgroundColor = color.uicolor
      view
    end

    def label(text, frame, size=16, bold=false, color='#000000', align=nil, background=nil, shadow=false, shadow_color='#CCCCCC')
      frame                    = get_frame(frame)
      lbl 			               = UILabel.alloc.initWithFrame(frame)
      lbl.text                 = text.to_s
      
      if background.nil?
        lbl.backgroundColor = UIColor.clearColor
      else
        lbl.backgroundColor = "#{background}".uicolor
      end

      lbl.highlightedTextColor = :white.uicolor

      lbl.textColor       = color.uicolor unless color.nil?
      font_size           = size.nil? ? 16 : size
      lbl.font 		        = bold ? UIFont.boldSystemFontOfSize(font_size) :
        UIFont.systemFontOfSize(font_size)

      case align
      when nil, :left, 'left'
        lbl.textAlignment   = UITextAlignmentLeft
      when :right,  'right'
        lbl.textAlignment   = UITextAlignmentRight
      when :center, 'center'
        lbl.textAlignment   = UITextAlignmentCenter
      end

      if shadow
        shadow_color      = '#CCCCCC' if shadow_color.nil?
        lbl.shadowColor   = shadow_color.uicolor
        lbl.shadowOffset  = CGSizeMake(0, 1)
      end
      lbl
    end

    #自适应高度label
    def context(text, frame, font_size = 16, color='#000000', absolute=false, align=nil, length=nil)
      frame = get_frame(frame)
      color     ||= '#000000'
      font_size ||= 16
      lbl                 = UILabel.new
      lbl.backgroundColor = UIColor.clearColor
      lbl.textColor       = color.uicolor

      font      = UIFont.systemFontOfSize(font_size)
      width     = frame[1][0]
      
      if absolute
        lbl.frame = frame
      else
        lbl.frame = CGRectMake(frame[0][0], frame[0][1], width, text.height(width: width, size: font_size))
      end

      case align
      when nil, :left, 'left' then lbl.textAlignment = NSTextAlignmentLeft
      when :right,  'right'   then lbl.textAlignment = NSTextAlignmentRight
      when :center, 'center'  then lbl.textAlignment = NSTextAlignmentCenter
      end

      lbl.font = font
      lbl.numberOfLines = 0
      lbl.lineBreakMode = NSLineBreakByWordWrapping
      lbl.text   = text
      lbl
    end

    def button(text, frame, size=16, color='#1D92B5', action=nil, param=nil, align=nil, bold=false)
      size  ||= 16
      color ||= '#1D92B5'
      frame = get_frame(frame)

      button                 = UIButton.alloc.initWithFrame(frame)
      button.titleLabel.font = bold ? UIFont.boldSystemFontOfSize(size) : UIFont.systemFontOfSize(size)
      button.setTitle(text, forState:UIControlStateNormal)
      button.setTitleColor(color.uicolor, forState:UIControlStateNormal)
      # button.setTitleColor(:darkgray.uicolor, forState:UIControlStateHighlighted)

      case align
      when nil, :center, 'center'
        button.setContentHorizontalAlignment(UIControlContentHorizontalAlignmentCenter)
      when :right,  'right'
        button.setContentHorizontalAlignment(UIControlContentHorizontalAlignmentRight)
      when :left, 'left'
        button.setContentHorizontalAlignment(UIControlContentHorizontalAlignmentLeft)
      end


      case action
      when 'back' then button.on(:touch) { pop }
      when 'hide' then button.on(:touch) { hide }
      when 'user' then button.on(:touch) { push UserDetail.alloc.initWithId(param) } # TODO: Decouple UserDetail
      else
        unless action.nil?
          if param.nil?
            button.on(:touch) { send(action) }
          else
            button.on(:touch) { send(action, param) }
          end
        end
      end

      button
    end


    def bbutton(text, frame, type=:info, action=nil)
      frame = get_frame(frame)
      symbol  = {info:    BButtonTypeInfo, 
                success: BButtonTypeSuccess, 
                danger:  BButtonTypeDanger,
                default: BButtonTypeDefault,
                primary: BButtonTypePrimary,
                warning: BButtonTypeWarning}
      type    = symbol[type] || BButtonTypeInfo
      btn = BButton.alloc.initWithFrame(frame, type:type, style:BButtonStyleBootstrapV3)
      btn.setTitle(text, forState:UIControlStateNormal)
      btn.on(:touch) { send(action) } if action
      btn
    end

    def change_btn_image(btn, name)
      btn.setImage(name.uiimage, forState:UIControlStateNormal)
    end

    def image_btn(name, frame, action=nil, param=nil)
      frame = get_frame(frame)
      button = UIButton.alloc.initWithFrame frame
      if name.include? ','
        val = name.split(",")
        button.setImage(val[0].uiimage, forState:UIControlStateNormal)
        button.setImage(val[1].uiimage, forState:UIControlStateHighlighted)
      else
        button.setImage(name.uiimage, forState:UIControlStateNormal)
      end

      case action
      when 'back' then button.on(:touch) { pop }
      when 'hide' then button.on(:touch) { hide }
      else
        unless action.nil?
          if param.nil?
            button.on(:touch) { send(action) }
          else
            button.on(:touch) { send(action, param, button) }
          end
        end
      end

      button
    end

    def image(url, frame, placeholder='photo', round=false, fit=false)
      placeholder ||= 'photo'

      frame = get_frame(frame)
      image_view = UIImageView.alloc.initWithFrame frame

      if url.nil? || url == ''
        image_view.image = placeholder.uiimage
      elsif url.class == UIImage
        image_view.image = url
      elsif url.downcase.include? 'http'
        image_view.setImageWithURL(url.nsurl, placehoderImage:placeholder.uiimage)

        if fit
          image_view.contentMode   = UIViewContentModeScaleAspectFill
          image_view.clipsToBounds = true

          # image_view.setImageWithURL(url.nsurl,
          #                     success:-> image, cached do
          #                        ratio = image.size.width / 320
          #                        height= 200 #frame[1][1]
          #                        rect = [[0, 0], [image.size.width, height * ratio]]
          #                        imageRef = CGImageCreateWithImageInRect(image.CGImage, rect)
          #                        img = UIImage.imageWithCGImage imageRef
          #                        CGImageRelease(imageRef)
          #                        image_view.image = img
          #                     end, failure:nil)

        end

        # warn("1:#{url}")
      elsif url.class == String
        
        image_view.image = url.uiimage

      else
        image_view.image = placeholder.uiimage
      end

      if round
        image_view.layer.cornerRadius   = frame[1][1] / 2
        image_view.layer.masksToBounds  = true
      end
      image_view
    end

    def update_image(image_view, url, placeholder='photo')
      return if url.nil? || url == ''

      if url.class == UIImage
        image_view.image = url
      elsif url.downcase.include? 'http'
        image_view.setImageWithURL(url.nsurl, placehoderImage:placeholder.uiimage)
      elsif url.class == String
        image_view.image = url.uiimage
      end
      image_view
    end

    def map(location ,frame, span=0.1, type='standard', show_me=false)
      map_view = MKMapView.alloc.initWithFrame(frame)
      map_view.mapType = (type == 'satellite') ? MKMapTypeSatellite : MKMapTypeStandard

      # 显示用户当前的坐标
      map_view.showsUserLocation=true if show_me
      region                     = MKCoordinateRegion.new
      region.center.latitude     = location[0]
      region.center.longitude    = location[1]

      span = 0.1 if span.nil?
      region.span.latitudeDelta  = span
      region.span.longitudeDelta = span
      map_view.region            = region
      map_view.autoresizingMask  = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight

      map_view
    end

    def custom_item(view)
      UIBarButtonItem.alloc.initWithCustomView(view)
    end

    def bar_item(title, action_name)
      item = UIBarButtonItem.alloc.initWithTitle(title,
                                                 style:UIBarButtonItemStyleBordered,
                                                 target:self,
                                                 action:action_name)
      item
    end

    def image_item(image_name, action_name)
      UIBarButtonItem.alloc.initWithImage(image_name.uiimage, style: UIBarButtonItemStyleBordered, target: self, action: action_name)
    end
    
    def action_item(action_name)
      item = UIBarButtonItem.alloc.
        initWithBarButtonSystemItem(UIBarButtonSystemItemAction,
                                    target:self,
                                    action:action_name)
      item
    end

    def system_item(symbol, action_name)
      name = {
        done:         UIBarButtonSystemItemDone,
        cancel:       UIBarButtonSystemItemCancel,
        edit:         UIBarButtonSystemItemEdit,
        save:         UIBarButtonSystemItemSave,
        add:          UIBarButtonSystemItemAdd,
        flexible_space: UIBarButtonSystemItemFlexibleSpace,
        fixed_space:    UIBarButtonSystemItemFixedSpace,
        compose:      UIBarButtonSystemItemCompose,
        reply:        UIBarButtonSystemItemReply,
        action:       UIBarButtonSystemItemAction,
        organize:     UIBarButtonSystemItemOrganize,
        bookmarks:    UIBarButtonSystemItemBookmarks,
        search:       UIBarButtonSystemItemSearch,
        refresh:      UIBarButtonSystemItemRefresh,
        stop:         UIBarButtonSystemItemStop,
        camera:       UIBarButtonSystemItemCamera,
        trash:        UIBarButtonSystemItemTrash,
        play:         UIBarButtonSystemItemPlay,
        pause:        UIBarButtonSystemItemPause,
        rewind:       UIBarButtonSystemItemRewind,
        fast_forward: UIBarButtonSystemItemFastForward,
        undo:         UIBarButtonSystemItemUndo,
        redo:         UIBarButtonSystemItemRedo,
        page_curl:    UIBarButtonSystemItemPageCurl
      }[symbol] ||    UIBarButtonSystemItemDone

      item = UIBarButtonItem.alloc.
        initWithBarButtonSystemItem(name,
                                    target:self,
                                    action:action_name)
      item
    end

    # 系统add按扭
    def add_item(action_name)
      item = UIBarButtonItem.alloc.
        initWithBarButtonSystemItem(UIBarButtonSystemItemAdd,
                                    target:self,
                                    action:action_name)
      item
    end

    # 系统refresh按扭
    def refresh_item(action_name)
      item = UIBarButtonItem.alloc.
        initWithBarButtonSystemItem(UIBarButtonSystemItemRefresh,
                                    target:self,
                                    action:action_name)
      item
    end

    def textfield(frame, placeholder='', text='', is_secure=false)
      frame = get_frame(frame)
      field                 = UITextField.alloc.initWithFrame(frame)
      field.placeholder     = placeholder.to_s
      field.secureTextEntry = is_secure
      field.borderStyle     = UITextBorderStyleNone
      # UITextBorderStyleRoundedRect
      field.returnKeyType   = UIReturnKeyNext
      field.delegate        = self
      field.text            = text.to_s
      field
    end

    def textview(args={})
      frame = get_frame(args[:frame])
      tv = UITextView.alloc.initWithFrame(frame)
      tv.font = UIFont.systemFontOfSize(args[:font_size]) if args[:font_size]
      tv.layer.cornerRadius = args[:radius] if args[:radius]
      tv.delegate = self
      tv
    end

    def password_field(frame, placeholder='', text='')
      textfield(frame, placeholder.to_s, text.to_s, true)
    end

    def add_subviews(view, objs)
      objs.each { |obj| view.addSubview(obj) if !obj.nil? }
      view
    end

    def set_image(btn, name)
      btn.setImage(name.uiimage, forState:UIControlStateNormal)
      btn
    end


    # 生成segement
    def segment(frame, items, actions, default=0, color='#FF9900')

      items   = items.split(",")    
      actions = actions.split(",")

      #初始化UISegmentedControl  
      segmentedControl = UISegmentedControl.alloc.initWithItems(items)  
      segmentedControl.frame = get_frame(frame)
      segmentedControl.selectedSegmentIndex   = default
      segmentedControl.tintColor              = color.uicolor 
      segmentedControl.segmentedControlStyle  = UISegmentedControlStylePlain
      segmentedControl.on(:value_changed) do
        if actions.length >= segmentedControl.selectedSegmentIndex + 1
          action = actions[segmentedControl.selectedSegmentIndex]
          send(action)
        end
      end

      segmentedControl
    end

    def friendly_time(from_time, include_seconds = false)
      if from_time.class == Bignum
        time_value = from_time - Time.now.to_i
      else
        time_value = from_time - Time.now
      end
      distance_in_minutes = (((time_value).abs)/60).round
      distance_in_seconds = ((time_value).abs).round

      case distance_in_minutes
      when 0..1
        return (distance_in_minutes == 0) ? '不到1分钟' : '1分钟' unless include_seconds
        case distance_in_seconds
        when 0..4   then '刚刚'
        when 5..9   then '10秒前'
        when 10..19 then '20秒前'
        when 20..39 then '半分钟前'
        when 40..59 then '不到1分钟'
        else             '1分钟'
        end

      when 2..44           then "#{distance_in_minutes}分钟前"
      when 45..89          then '1小时前'
      when 90..1439        then "#{(distance_in_minutes.to_f / 60.0).round} 小时前"
      when 1440..2879      then '1天前'
      when 2880..43199     then "#{(distance_in_minutes / 1440).round}天前"
      when 43200..86399    then '1个月前'
      when 86400..525599   then "#{(distance_in_minutes / 43200).round}个月"
      when 525600..1051199 then '1年左右'
      else                      "#{(distance_in_minutes / 525600).round}年"
      end
    end

    def log(msg)
      NSLog(msg)
    end


    def empty_cell
      cell = UITableViewCell.alloc.init
      cell.contentView.subviews.each do |subview|
        subview.removeFromSuperview
      end
      cell
    end

    def loading_view(height=nil)
      height = height || self.view.frame.size.height
      bg     = create_view("0,0,320,#{height}", '#FFFFFF', 0)

      progressInd       = UIActivityIndicatorView.alloc.initWithActivityIndicatorStyle(UIActivityIndicatorViewStyleGray)
      bg.addSubview progressInd
      progressInd.center= [110, height/2]
      progressInd.startAnimating
      bg.addSubview label('请稍后...', [[130, height/2-7], [100,16]], 16, false, '#878787')
      bg
    end


    def open_url(url)
      unless url.is_a?(NSURL)
        url = NSURL.URLWithString(url)
      end
      UIApplication.sharedApplication.openURL(url)
    end


    # Displays a UIAlertView.
    #
    # title - The title as a String.
    # args  - The title of the cancel button as a String, or a Hash of options.
    #         (Default: { cancel_button_title: 'OK' })
    #         cancel_button_title - The title of the cancel button as a String.
    #         message             - The main message as a String.
    # block - Yields the alert object if a block is given, and does so before the alert is shown.
    #
    # Returns an instance of BW::UIAlertView

    def alert(title, args={})
      alert = UIAlertView.alloc.initWithTitle(title, 
                      message:'',
                     delegate:self,
            cancelButtonTitle:"确定",
            otherButtonTitles:nil)

      alert.show
      alert
    end

  end
end