/**
 * 家书 FamilyBook · 资源模块（鸿蒙端）
 *
 * 对应 Web 端 `templates/resources/index.php`。
 * 资源 = 证件 / 资料 / 附件的集合（户口本、房产证、学籍资料…），可共享给某个成员。
 *
 * 端上形态：**按类别分组的卡片列表**，卡片右侧显示归属人与附件数；
 * 那一排「类别筛选胶囊」对应 Web 端页头的分类入口。
 */

import { FbColors, FbMetric } from '../../common/Theme';
import { FbAppState, fbAppState } from '../../common/Store';
import { FbGroup, FbResourceItem } from '../../model/Types';
import { FB_DEMO_RESOURCES, fbGroupResource } from '../../model/DemoData';
import { FbEmptyBox, FbIconButton, FbPrimaryButton, FbTag } from '../../components/Widgets';

@ComponentV2
export struct FbResourcesPage {
  @Param app: FbAppState = fbAppState();

  /** 模块主题色（资源 = 靛蓝） */
  private accent: string = '#5566A8';
  private all: FbResourceItem[] = FB_DEMO_RESOURCES;
  /** 当前筛选类别（'' = 全部） */
  @Local kindFilter: string = '';

  build() {
    Column() {
      // ---- 页头 ----
      Row({ space: 8 }) {
        Column({ space: 2 }) {
          Text(this.all.length.toString() + ' 项资源')
            .fontSize(FbMetric.fontTitle)
            .fontWeight(FontWeight.Medium)
            .fontColor(FbColors.ink)
          Text('证件 / 资料 / 附件，可共享给家庭成员')
            .fontSize(FbMetric.fontTiny)
            .fontColor(FbColors.faint)
        }
        .alignItems(HorizontalAlign.Start)
        .layoutWeight(1)

        FbPrimaryButton({
          label: '添加',
          bg: this.accent,
          icon: $r('app.media.fb_ic_plus')
        })
        FbIconButton({ icon: $r('app.media.fb_ic_gear'), tint: FbColors.muted })
      }
      .width('100%')
      .padding({ left: FbMetric.pagePad, right: FbMetric.pagePad, top: 12, bottom: 8 })
      .alignItems(VerticalAlign.Center)

      // ---- 类别筛选 ----
      Row({ space: 8 }) {
        this.kindChip('全部', '')
        this.kindChip('证件', 'document')
        this.kindChip('资料', 'material')
        Blank()
        Text('共享给我 ' + this.sharedCount().toString() + ' 项')
          .fontSize(FbMetric.fontTiny)
          .fontColor(FbColors.faint)
      }
      .width('100%')
      .padding({ left: FbMetric.pagePad, right: FbMetric.pagePad, bottom: 8 })
      .alignItems(VerticalAlign.Center)

      // ---- 列表 ----
      if (this.filtered().length === 0) {
        FbEmptyBox({
          title: '这里还没有资源',
          hint: '家里的证件、资料和附件都可以收进来，需要时一键共享',
          icon: $r('app.media.fb_ic_resources')
        })
      } else {
        List({ space: 0 }) {
          ForEach(this.groups(), (g: FbGroup<FbResourceItem>) => {
            ListItemGroup({ header: this.groupHeader(g.title, g.items.length.toString() + ' 项') }) {
              ForEach(g.items, (r: FbResourceItem) => {
                ListItem() {
                  this.resourceCard(r)
                }
              }, (r: FbResourceItem): string => 'res_' + r.id.toString())
            }
          }, (g: FbGroup<FbResourceItem>): string => 'rsg_' + g.key)
        }
        .layoutWeight(1)
        .width('100%')
        .padding({ left: FbMetric.pagePad, right: FbMetric.pagePad, bottom: 24 })
        .scrollBar(BarState.Off)
        .edgeEffect(EdgeEffect.Spring)
      }
    }
    .width('100%')
    .height('100%')
    .backgroundColor(FbColors.paper)
    .alignItems(HorizontalAlign.Start)
  }

  /** 一项资源卡 */
  @Builder
  resourceCard(r: FbResourceItem) {
    Row({ space: 12 }) {
      // 类别图标底
      Stack({ alignContent: Alignment.Center }) {
        Image(this.kindIcon(r.kind))
          .width(19)
          .height(19)
          .renderMode(ImageRenderMode.Template)
          .fillColor(this.accent)
      }
      .width(42)
      .height(42)
      .borderRadius(FbMetric.radiusS)
      .backgroundColor(this.accent + '14')

      Column({ space: 4 }) {
        Row({ space: 6 }) {
          Text(r.name)
            .fontSize(FbMetric.fontBody)
            .fontWeight(FontWeight.Medium)
            .fontColor(FbColors.ink)
            .maxLines(1)
            .textOverflow({ overflow: TextOverflow.Ellipsis })
            .layoutWeight(1)
          if (r.shared) {
            FbTag({ text: '已共享', tone: 'green' })
          }
        }
        .width('100%')
        .alignItems(VerticalAlign.Center)

        Row({ space: 10 }) {
          Text('归属 ' + r.ownerName)
            .fontSize(10)
            .fontColor(FbColors.muted)
          Row({ space: 3 }) {
            Image($r('app.media.fb_ic_resources'))
              .width(11)
              .height(11)
              .renderMode(ImageRenderMode.Template)
              .fillColor(FbColors.faint)
            Text(r.fileCount.toString() + ' 个附件')
              .fontSize(10)
              .fontColor(FbColors.faint)
          }
          Text(r.updatedAt)
            .fontSize(10)
            .fontColor(FbColors.faint)
        }
        .alignItems(VerticalAlign.Center)
      }
      .alignItems(HorizontalAlign.Start)
      .layoutWeight(1)

      Image($r('app.media.fb_ic_forward'))
        .width(13)
        .height(13)
        .renderMode(ImageRenderMode.Template)
        .fillColor(FbColors.faint)
    }
    .width('100%')
    .padding(14)
    .backgroundColor(FbColors.surface)
    .borderRadius(FbMetric.radius)
    .margin({ bottom: 8 })
    .alignItems(VerticalAlign.Center)
  }

  @Builder
  kindChip(label: string, key: string) {
    Text(label)
      .fontSize(FbMetric.fontSmall)
      .fontColor(this.kindFilter === key ? Color.White : FbColors.muted)
      .backgroundColor(this.kindFilter === key ? this.accent : FbColors.inputBg)
      .padding({ left: 12, right: 12, top: 6, bottom: 6 })
      .borderRadius(FbMetric.radiusPill)
      .onClick(() => {
        this.kindFilter = key;
      })
  }

  @Builder
  groupHeader(title: string, count: string) {
    Row({ space: 8 }) {
      Text(title)
        .fontSize(FbMetric.fontSmall)
        .fontWeight(FontWeight.Medium)
        .fontColor(FbColors.ink)
      Text(count)
        .fontSize(FbMetric.fontTiny)
        .fontColor(FbColors.faint)
      Blank()
    }
    .width('100%')
    .padding({ left: 4, right: 4, top: 12, bottom: 8 })
    .backgroundColor(FbColors.paper)
  }

  private kindIcon(kind: string): Resource {
    if (kind === 'document') {
      return $r('app.media.fb_ic_lock');
    }
    if (kind === 'material') {
      return $r('app.media.fb_ic_book');
    }
    return $r('app.media.fb_ic_resources');
  }

  private filtered(): FbResourceItem[] {
    if (this.kindFilter.length === 0) {
      return this.all;
    }
    return this.all.filter((r: FbResourceItem): boolean => r.kind === this.kindFilter);
  }

  private groups(): FbGroup<FbResourceItem>[] {
    return fbGroupResource(this.filtered());
  }

  private sharedCount(): number {
    return this.all.filter((r: FbResourceItem): boolean => r.shared).length;
  }
}