import { defineStore } from 'pinia'
import tinycolor from 'tinycolor2'
import { omit } from 'lodash'
import type { Slide, SlideTheme, PPTElement, PPTAnimation } from '@/types/slides'
import { slides } from '@/mocks/slides'
import { theme } from '@/mocks/theme'
import { layouts } from '@/mocks/layout'

interface RemoveElementPropData {
  id: string
  propName: string | string[]
}

interface UpdateElementData {
  id: string | string[]
  props: Partial<PPTElement>
  slideId?: string
}

interface FormatedAnimation {
  animations: PPTAnimation[]
  autoNext: boolean
}

export interface SlidesState {
  title: string
  theme: SlideTheme
  slides: Slide[]
  slideIndex: number
  viewportRatio: number
  layoutSlides: Slide[]
}

export const useSlidesStore = defineStore('slides', {
  state: (): SlidesState => ({
    title: '未命名演示文稿', // 幻灯片标题
    theme: theme, // 主题样式
    slides: slides, // 幻灯片页面数据
    slideIndex: 0, // 当前页面索引
    viewportRatio: 0.75, // 可视区域比例，默认16:9 0.5625
    layoutSlides: slides, // 所有模版数据
  }),

  getters: {
    currentSlide(state) {
      return state.slides[state.slideIndex]
    },
  
    currentSlideAnimations(state) {
      const currentSlide = state.slides[state.slideIndex]
      if (!currentSlide?.animations) return []

      const els = currentSlide.elements
      const elIds = els.map(el => el.id)
      return currentSlide.animations.filter(animation => elIds.includes(animation.elId))
    },

    // 格式化的当前页动画
    // 将触发条件为“与上一动画同时”的项目向上合并到序列中的同一位置
    // 为触发条件为“上一动画之后”项目的上一项添加自动向下执行标记
    formatedAnimations(state) {
      const currentSlide = state.slides[state.slideIndex]
      if (!currentSlide?.animations) return []

      const els = currentSlide.elements
      const elIds = els.map(el => el.id)
      const animations = currentSlide.animations.filter(animation => elIds.includes(animation.elId))

      const formatedAnimations: FormatedAnimation[] = []
      for (const animation of animations) {
        if (animation.trigger === 'click' || !formatedAnimations.length) {
          formatedAnimations.push({ animations: [animation], autoNext: false })
        }
        else if (animation.trigger === 'meantime') {
          const last = formatedAnimations[formatedAnimations.length - 1]
          last.animations = last.animations.filter(item => item.elId !== animation.elId)
          last.animations.push(animation)
          formatedAnimations[formatedAnimations.length - 1] = last
        }
        else if (animation.trigger === 'auto') {
          const last = formatedAnimations[formatedAnimations.length - 1]
          last.autoNext = true
          formatedAnimations[formatedAnimations.length - 1] = last
          formatedAnimations.push({ animations: [animation], autoNext: false })
        }
      }
      return formatedAnimations
    },
  
    layouts(state) {
      const {
        themeColor,
        fontColor,
        fontName,
        backgroundColor,
      } = state.theme
      const subColor = tinycolor(fontColor).isDark() ? 'rgba(230, 230, 230, 0.5)' : 'rgba(180, 180, 180, 0.5)'
      console.log('layouts,--------')
      const layoutsString = JSON.stringify(state.layoutSlides)
        .replaceAll('{{themeColor}}', themeColor)
        .replaceAll('{{fontColor}}', fontColor)
        .replaceAll('{{fontName}}', fontName)
        .replaceAll('{{backgroundColor}}', backgroundColor)
        .replaceAll('{{subColor}}', subColor)
      
      return JSON.parse(layoutsString)
    },
  },

  actions: {
    setTitle(title: string) {
      if (!title) this.title = '未命名演示文稿'
      else this.title = title
    },

    setTheme(themeProps: Partial<SlideTheme>) {
      this.theme = { ...this.theme, ...themeProps }
    },
  
    setViewportRatio(viewportRatio: number) {
      this.viewportRatio = viewportRatio
    },
  
    setSlides(slides: Slide[]) {
      this.slides = slides
    },

    setLayouts(layoutSlides: Slide[]) {
      this.layoutSlides = layoutSlides
    },
  
    addSlide(slide: Slide | Slide[]) {
      const slides = Array.isArray(slide) ? slide : [slide]
      const addIndex = this.slideIndex + 1
      this.slides.splice(addIndex, 0, ...slides)
      this.slideIndex = addIndex
    },
  
    updateSlide(props: Partial<Slide>) {
      const slideIndex = this.slideIndex
      this.slides[slideIndex] = { ...this.slides[slideIndex], ...props }
    },
  
    deleteSlide(slideId: string | string[]) {
      const slidesId = Array.isArray(slideId) ? slideId : [slideId]
  
      const deleteSlidesIndex = []
      for (let i = 0; i < slidesId.length; i++) {
        const index = this.slides.findIndex(item => item.id === slidesId[i])
        deleteSlidesIndex.push(index)
      }
      let newIndex = Math.min(...deleteSlidesIndex)
  
      const maxIndex = this.slides.length - slidesId.length - 1
      if (newIndex > maxIndex) newIndex = maxIndex
  
      this.slideIndex = newIndex
      this.slides = this.slides.filter(item => !slidesId.includes(item.id))
    },
  
    updateSlideIndex(index: number) {
      this.slideIndex = index
    },
  
    addElement(element: PPTElement | PPTElement[]) {
      const elements = Array.isArray(element) ? element : [element]
      const currentSlideEls = this.slides[this.slideIndex].elements
      const newEls = [...currentSlideEls, ...elements]
      this.slides[this.slideIndex].elements = newEls
    },

    deleteElement(elementId: string | string[]) {
      const elementIdList = Array.isArray(elementId) ? elementId : [elementId]
      const currentSlideEls = this.slides[this.slideIndex].elements
      const newEls = currentSlideEls.filter(item => !elementIdList.includes(item.id))
      this.slides[this.slideIndex].elements = newEls
    },
  
    updateElement(data: UpdateElementData) {
      const { id, props, slideId } = data
      const elIdList = typeof id === 'string' ? [id] : id

      const slideIndex = slideId ? this.slides.findIndex(item => item.id === slideId) : this.slideIndex
      const slide = this.slides[slideIndex]
      const elements = slide.elements.map(el => {
        return elIdList.includes(el.id) ? { ...el, ...props } : el
      })
      this.slides[slideIndex].elements = (elements as PPTElement[])
    },
  
    removeElementProps(data: RemoveElementPropData) {
      const { id, propName } = data
      const propsNames = typeof propName === 'string' ? [propName] : propName
  
      const slideIndex = this.slideIndex
      const slide = this.slides[slideIndex]
      const elements = slide.elements.map(el => {
        return el.id === id ? omit(el, propsNames) : el
      })
      this.slides[slideIndex].elements = (elements as PPTElement[])
    },
  },
})