import { html, css } from 'lit'
import { customElement, state } from 'lit/decorators.js'
import { PageView } from '@operato/shell'
import { i18next } from '@operato/i18n'
import { client } from '@operato/graphql'
import gql from 'graphql-tag'

const GET_KPI_OVERVIEW = gql`
  query {
    kpiCategories: kpisLevel1 {
      id
      name
      description
      active
      kpis: children {
        id
        name
        description
        formula
        active
        grades
      }
    }
  }
`

@customElement('kpi-overview')
export class KpiOverview extends PageView {
  static styles = css`
    :host {
      display: block;
      background: #f6f6f6;
      box-sizing: border-box;
      padding: 16px 24px;
    }
    .overview-container {
      display: block;
      margin: 8px 0 24px 0;
    }
    .overview-left {
      display: block;
    }
    .overview-title {
      color: #0c4da2;
      font-size: 1.125rem;
      font-weight: 700;
      letter-spacing: -0.05em;
      margin: 0 0 8px 0;
    }
    .overview-desc {
      font-size: 0.875rem;
      color: #212529;
      letter-spacing: -0.05em;
      line-height: 1;
    }
    .group-tabs {
      display: flex;
      margin: 8px 0 0 0;
      justify-content: flex-start;
    }
    .group-tab {
      padding: 10px 15px;
      border-radius: 8px 8px 0 0;
      background: rgba(46, 164, 223, 0.1);
      cursor: pointer;
      font-size: 1rem;
      font-weight: 400;
      border: none;
      outline: none;
      transition: background 0.2s;
    }
    .group-tab[selected] {
      background: #0c4da2;
      color: #ffffff;
      font-weight: 700;
      box-shadow: 1px 0 0 0 rgba(0, 0, 0, 0.1);
    }
    .tab-icon {
      display: inline-block;
      width: 20px;
      height: 20px;
      border-radius: 2px;
      background: #35618e;
      vertical-align: middle;
    }
    .group-tab[selected] .tab-icon {
      background: #ffffff;
    }
    .tab-label {
      margin-left: 6px;
      vertical-align: middle;
    }
    .kpi-list {
      display: flex;
      gap: 8px;
      margin: 0 0 32px 0;
      justify-content: center;
    }
    .kpi-item {
      padding: 8px 20px;
      border-radius: 12px;
      background: #f5f5f5;
      cursor: pointer;
      font-size: 1rem;
      border: none;
      outline: none;
      transition: background 0.2s;
    }
    .kpi-item[selected] {
      background: #bdf;
      color: #222;
      font-weight: bold;
    }
    .main-content {
      display: flex;
      gap: 0;
      align-items: stretch;
      justify-content: stretch;
      background: #fff;
      border: 2px solid #0c4da2;
      overflow: hidden;
    }
    .markdown {
      background: #fff;
      padding: 25px;
      min-height: 240px;
      flex: 1 1 auto;
      font-size: 0.875rem;
      color: #212529;
    }
    .markdown p {
      line-height: 1.7142857142857142;
      margin: 0 0 12px 0;
    }
    .toc {
      flex: 0 0 240px;
      background: linear-gradient(180deg, rgba(137, 204, 237, 0.2) 0%, rgba(137, 204, 237, 0) 100%);
      border-left: 1px solid rgba(46, 164, 223, 0.1);
      padding: 30px 15px;
      font-size: 1rem;
      color: #212529;
    }
    .toc img {
      width: 25px;
      height: 25px;
    }
    .submenu-header {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-bottom: 14px;
    }
    .submenu-icon {
      width: 25.5px;
      height: 28.67px;
      border-radius: 2px;
      background: #02a8a2;
      flex: 0 0 auto;
    }
    .submenu-title {
      font-weight: 700;
      font-size: 1.25rem;
      color: #0c4da2;
    }
    .toc-title {
      color: #0c4da2;
      font-size: 20px;
      font-weight: 700;
      line-height: 20px;
      margin-bottom: 15px;
      margin-top: 3px;
    }
    .toc-list {
      margin: 0 0 8px 0;
      padding: 0;
      list-style: none;
    }
    .toc-list li {
      margin-bottom: 10px;
    }
    .toc-btn {
      display: block;
      margin: 0;
      padding: 8px 0 8px 12px;
      border: none;
      border-left: 3px solid transparent;
      border-radius: 0;
      background: transparent;
      color: #212529;
      cursor: pointer;
      font-size: 1rem;
      text-align: left;
      transition: background 0.2s;
    }
    .toc-btn:hover {
      background: rgba(0, 0, 0, 0.03);
    }
    .toc-btn[selected] {
      border-left-color: #4cbb49;
      font-weight: 700;
      color: #212529;
    }
    .kpi-title {
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: #02a8a2;
    }
    .kpi-formula {
      margin: 3px 0 20px 0;
      font-weight: 700;
      color: #212529;
    }
    .subtitle {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 20px;
      font-weight: 700;
      color: #0c4da2;
    }
    .subtitle img {
      width: 15px;
      height: 15px;
    }
    .subtitle-icon {
      width: 20px;
      height: 20px;
      border-radius: 2px;
      background: #02a8a2;
      flex: 0 0 auto;
    }
    .grades-section {
      margin-top: 16px;
      background: #fff;
      border-radius: 8px;
      padding: 16px;
      border: 2px solid #0c4da2;
    }
    .grades-section b {
      display: block;
      margin-bottom: 8px;
    }
  `

  get context() {
    return {
      title: i18next.t('title.kpi overview')
    }
  }

  @state() selectedGroup = 0
  @state() selectedKpi = 0
  @state() kpiCategories: any[] = []
  @state() loading = true
  @state() error: Error | null = null

  async firstUpdated() {
    try {
      const { data } = await client.query({ query: GET_KPI_OVERVIEW })
      this.kpiCategories = data.kpiCategories
      this.loading = false
    } catch (e) {
      this.error = e instanceof Error ? e : new Error(String(e))
      this.loading = false
    }
  }

  render() {
    if (this.error) return html`<div>에러: ${this.error?.message}</div>`
    if (!this.kpiCategories.length) return html`<div>KPI 카테고리가 없습니다.</div>`

    const selctedY = this.kpiCategories?.[this.selectedGroup] || ''
    const group = this.kpiCategories[this.selectedGroup] as any
    const kpi = group?.kpis?.[this.selectedKpi] as any

    return html`
      <div class="overview-container">
        <div class="overview-left">
          <div class="overview-title">KPI개요</div>
          <div class="overview-desc">
            건설현장 KPI관리 시스템은 프로젝트 성과를 측정하고, 모니터링하여 효율적인 공정 관리를 지원합니다. 주요
            지표를 통해 현장 생산성, 품질, 안전 등을 실시간으로 파악할 수 있습니다.
          </div>
        </div>
      </div>
      <div class="group-tabs">
        ${this.kpiCategories.map(
          (g, i) => html`
            <button
              class="group-tab"
              ?selected=${i === this.selectedGroup}
              @click=${() => {
                this.selectedGroup = i
                this.selectedKpi = 0
              }}
            >
              ${g.name}
            </button>
          `
        )}
      </div>
      <div class="main-content">
        <div class="markdown">
          <div class="kpi-title">${kpi?.name || ''}</div>
          <div>${kpi?.description || ''}</div>
          ${kpi?.formula
            ? html`
                <div class="subtitle"><img src="/assets/images/green-calendar.svg" />주요산식</div>
                <div class="kpi-formula">${kpi?.formula}</div>
              `
            : ''}
        </div>
        <div class="toc">
          <img src="/assets/images/green-calendar.svg" />
          <div class="toc-title">${selctedY.name} 지표</div>
          <ul class="toc-list">
            ${group?.kpis?.map(
              (k, i) => html`
                <li>
                  <button class="toc-btn" ?selected=${i === this.selectedKpi} @click=${() => (this.selectedKpi = i)}>
                    ${k.name}
                  </button>
                </li>
              `
            )}
          </ul>
        </div>
      </div>
      ${kpi?.grades && Array.isArray(kpi.grades) && kpi.grades.length > 0
        ? html`
            <div class="grades-section">
              <b>등급 구간</b>
              <ul>
                ${kpi.grades.map(
                  (g: any) => html`<li>${g.name}: ${g.minValue}~${g.maxValue} (${g.description || ''})</li>`
                )}
              </ul>
            </div>
          `
        : ''}
    `
  }
}