/**
 * DimensionCard —— 32 维诊断单项卡片（F3）。
 *
 * - ok 维度：name_cn + value（四种形态由 formatDimValue 统一处理：字符串直显 /
 *   数字转字符串 / 数组 join '、' / 空值显示 '—'）+ 来源标签中文映射 + 置信度百分比
 * - confidence < 0.7 加“仅供参考”小标（NFR-UX-05）
 * - skipped 维度：整体灰显，evidence 作为未覆盖原因文案
 * - rule_hits 非空时折叠展示“依据规则 N 条”
 */

import { EMPTY_DIMENSION, DimensionWire, formatDimValue, sourceColor, sourceLabel } from './ReportTypes'
import { COLOR_PRIMARY } from '../../core/Theme'

const CARD_PRIMARY_COLOR: string = COLOR_PRIMARY

@Component
export struct DimensionCard {
  dim: DimensionWire = EMPTY_DIMENSION
  /** 已提交的反馈判定（'' = 未反馈；'accurate' / 'inaccurate' 高亮已选项，宿主回显用）。 */
  feedbackVerdict: string = ''
  /** 提交反馈（组件保持无网络）：宿主调 POST /reports/{id}/feedback。 */
  onFeedback: (dimKey: string, verdict: string, correction: string) => void = () => {}
  @State ruleExpanded: boolean = false
  @State correctionOpen: boolean = false // 「不准」展开的行内修正输入
  @State correctionText: string = ''

  private isSkipped(): boolean {
    return this.dim.status !== 'ok'
  }

  private titleText(): string {
    const n = this.dim.name_cn
    if (n !== undefined && n !== '') {
      return n
    }
    const k = this.dim.key
    if (k !== undefined && k !== '') {
      return k
    }
    const num = this.dim.number
    return num !== undefined ? `维度 ${num}` : '未知维度'
  }

  private hasConfidence(): boolean {
    const c = this.dim.confidence
    return c !== undefined && c !== null
  }

  private confidencePercent(): string {
    const c = this.dim.confidence
    return `${Math.round((c ?? 0) * 100)}%`
  }

  private isLowConfidence(): boolean {
    const c = this.dim.confidence
    return c !== undefined && c !== null && c < 0.7
  }

  private ruleHits(): string[] {
    const r = this.dim.rule_hits
    return r ?? []
  }

  private reasonText(): string {
    const ev = this.dim.evidence
    if (ev !== undefined && ev !== null && ev !== '') {
      return ev
    }
    return '本期未采集到足够信息'
  }

  /** 反馈区可用条件（T-P3-21）：仅 status=ok 且有 key 的维度卡。 */
  private feedbackable(): boolean {
    const k = this.dim.key
    return !this.isSkipped() && k !== undefined && k !== ''
  }

  private dimKey(): string {
    return this.dim.key ?? ''
  }

  private submitFeedback(verdict: string): void {
    if (verdict === 'inaccurate' && !this.correctionOpen) {
      // 点「不准」先展开行内修正输入（可选，≤100 字），再点「提交」才上报
      this.correctionOpen = true
      return
    }
    this.correctionOpen = false
    this.onFeedback(this.dimKey(), verdict, verdict === 'inaccurate' ? this.correctionText.trim() : '')
  }

  build() {
    Column({ space: 8 }) {
      Row({ space: 8 }) {
        Text(this.titleText())
          .fontSize(15)
          .fontWeight(FontWeight.Medium)
          .fontColor(this.isSkipped() ? '#9AA0A6' : '#333333')
          .layoutWeight(1)
          .maxLines(1)
          .textOverflow({ overflow: TextOverflow.Ellipsis })
        if (!this.isSkipped()) {
          Text(sourceLabel(this.dim.source))
            .fontSize(10)
            .fontColor(sourceColor(this.dim.source))
            .padding({ left: 6, right: 6, top: 2, bottom: 2 })
            .backgroundColor('#F5F5F7')
            .borderRadius(4)
          if (this.hasConfidence()) {
            Text(this.confidencePercent())
              .fontSize(12)
              .fontColor('#666666')
          }
          if (this.isLowConfidence()) {
            Text('仅供参考')
              .fontSize(10)
              .fontColor('#D46A0B')
              .padding({ left: 6, right: 6, top: 2, bottom: 2 })
              .backgroundColor('#FDF3E3')
              .borderRadius(4)
          }
        }
      }
      .width('100%')

      if (this.isSkipped()) {
        Text(`未覆盖：${this.reasonText()}`)
          .fontSize(13)
          .fontColor('#9AA0A6')
          .width('100%')
      } else {
        Text(formatDimValue(this.dim.value))
          .fontSize(14)
          .fontColor('#333333')
          .width('100%')
      }

      if (this.ruleHits().length > 0) {
        Text(this.ruleExpanded ? `收起依据（规则 ${this.ruleHits().length} 条）` : `依据规则 ${this.ruleHits().length} 条`)
          .fontSize(12)
          .fontColor(CARD_PRIMARY_COLOR)
          .onClick(() => {
            this.ruleExpanded = !this.ruleExpanded
          })
        if (this.ruleExpanded) {
          Column({ space: 4 }) {
            ForEach(this.ruleHits(), (r: string) => {
              Text(`· ${r}`)
                .fontSize(12)
                .fontColor('#888888')
                .width('100%')
            }, (r: string) => r)
          }
          .width('100%')
          .alignItems(HorizontalAlign.Start)
        }
      }

      // 结论反馈区（T-P3-21）：仅 ok 维度；已选项高亮，再点另一项即改判
      if (this.feedbackable()) {
        Row({ space: 10 }) {
          Text('这个结论准吗?')
            .fontSize(12)
            .fontColor('#8A9099')
            .layoutWeight(1)
          Text('准 👍')
            .fontSize(12)
            .fontColor(this.feedbackVerdict === 'accurate' ? '#FFFFFF' : CARD_PRIMARY_COLOR)
            .padding({ left: 12, right: 12, top: 4, bottom: 4 })
            .borderRadius(14)
            .backgroundColor(this.feedbackVerdict === 'accurate' ? CARD_PRIMARY_COLOR : '#F7E3EA')
            .onClick(() => {
              this.submitFeedback('accurate')
            })
          Text('不准 👎')
            .fontSize(12)
            .fontColor(this.feedbackVerdict === 'inaccurate' ? '#FFFFFF' : '#666666')
            .padding({ left: 12, right: 12, top: 4, bottom: 4 })
            .borderRadius(14)
            .backgroundColor(this.feedbackVerdict === 'inaccurate' ? '#666666' : '#F5F5F7')
            .onClick(() => {
              this.submitFeedback('inaccurate')
            })
        }
        .width('100%')
        .alignItems(VerticalAlign.Center)
        .margin({ top: 4 })

        // 「不准」的行内修正输入（可选，≤100 字）
        if (this.correctionOpen) {
          TextArea({ text: this.correctionText, placeholder: '你觉得应该是?(可选)' })
            .width('100%')
            .height(72)
            .fontSize(13)
            .maxLength(100)
            .backgroundColor('#F5F5F7')
            .borderRadius(8)
            .onChange((v: string) => {
              this.correctionText = v
            })
          Row() {
            Blank()
            Text('提交')
              .fontSize(13)
              .fontColor(Color.White)
              .padding({ left: 20, right: 20, top: 6, bottom: 6 })
              .borderRadius(16)
              .backgroundColor(CARD_PRIMARY_COLOR)
              .onClick(() => {
                this.onFeedback(this.dimKey(), 'inaccurate', this.correctionText.trim())
                this.correctionOpen = false
              })
          }
          .width('100%')
        }
      }
    }
    .width('100%')
    .padding(12)
    .borderRadius(12)
    .backgroundColor(this.isSkipped() ? '#F7F7F8' : '#FFFFFF')
    .opacity(this.isSkipped() ? 0.85 : 1)
  }
}