/*
 * Copyright (c) 2023 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import mediaQuery from '@ohos.mediaquery'

declare interface BreakPointTypeOption<T> {
  xs?: T
  sm?: T
  md?: T
  lg?: T
  xl?: T
  xxl?: T
}

export class BreakPointType<T> {
  options: BreakPointTypeOption<T>

  constructor(option: BreakPointTypeOption<T>) {
    this.options = option
  }

  getValue(currentBreakPoint: string) {
    if (currentBreakPoint === 'xs') {
      return this.options.xs
    } else if (currentBreakPoint === 'sm') {
      return this.options.sm
    } else if (currentBreakPoint === 'md') {
      return this.options.md
    } else if (currentBreakPoint === 'lg') {
      return this.options.lg
    } else if (currentBreakPoint === 'xl') {
      return this.options.xl
    } else if (currentBreakPoint === 'xxl') {
      return this.options.xxl
    } else {
      return undefined
    }
  }
}

class Breakpoint {
  name: string = ''
  size: number = 0
  mediaQueryListener?: mediaQuery.MediaQueryListener
}

export class BreakpointSystem {
  private currentBreakpoint: string = 'md'
  private breakpoints: Breakpoint[] = [{ name: 'xs', size: 0 }, { name: 'sm', size: 320 },
                                       { name: 'md', size: 520 }, { name: 'lg', size: 840 }]

  private updateCurrentBreakpoint(breakpoint: string) {
    if (this.currentBreakpoint !== breakpoint) {
      this.currentBreakpoint = breakpoint
      AppStorage.set<string>('currentBreakpoint', this.currentBreakpoint)
      console.log('on current breakpoint: ' + this.currentBreakpoint)
    }
  }

  public register() {
    this.breakpoints.forEach((breakpoint: Breakpoint, index) => {
      let condition: string = ''
      if (index === this.breakpoints.length - 1) {
        condition = "(" + breakpoint.size + "vp<=width" + ")"
      } else {
        condition = "(" + breakpoint.size + "vp<=width<" + this.breakpoints[index + 1].size + "vp)"
      }
      console.log(condition)
      breakpoint.mediaQueryListener = mediaQuery.matchMediaSync(condition)
      breakpoint.mediaQueryListener.on('change', (mediaQueryResult) => {
        if (mediaQueryResult.matches) {
          this.updateCurrentBreakpoint(breakpoint.name)
        }
      })
    })
  }

  public unregister() {
    this.breakpoints.forEach((breakpoint: Breakpoint) => {
      if (breakpoint && breakpoint.mediaQueryListener) {
        breakpoint.mediaQueryListener.off('change')
      }
    })
  }
}