import { DeesElement, property, state, html, customElement, type TemplateResult, css } from '@design.estate/dees-element';
import { actionButton, demoDocuments, demoFields, fakeDocument, icon, pill, workspaceBaseStyles, workspaceDemoFrame, type IDocumentRow, type IFieldPlacement } from './sdig-workspace.shared.js';

declare global {
  interface HTMLElementTagNameMap {
    'sdig-workspace-sign': SdigWorkspaceSign;
  }
}

@customElement('sdig-workspace-sign')
export class SdigWorkspaceSign extends DeesElement {
  public static demo = () => workspaceDemoFrame(html`<sdig-workspace-sign></sdig-workspace-sign>`);
  public static demoGroups = ['Signature Digital Workspace'];

  @property({ attribute: false }) public accessor document: IDocumentRow = demoDocuments[0];
  @state() private accessor activeFieldId: string = 'f1';
  @state() private accessor signedFieldIds: string[] = [];

  public static styles = [workspaceBaseStyles, css`
    .recipient-header { height: 56px; flex-shrink: 0; padding: 0 24px; background: var(--bg-card); border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
    .logomark { width: 28px; height: 28px; border-radius: 6px; background: var(--bg-el); border: 1px solid var(--border-strong); display: inline-flex; align-items: center; justify-content: center; font-family: 'Plus Jakarta Sans', Inter, sans-serif; font-weight: 700; position: relative; }
    .logomark::after { content: ''; position: absolute; right: 5px; bottom: 5px; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); }
    .sign-layout { flex: 1; display: flex; overflow: hidden; background: hsl(0 0% 96%); color: hsl(0 0% 10%); }
    :host-context(sdig-workspace[theme='dark']) .sign-layout { background: hsl(0 0% 6%); color: hsl(0 0% 95%); }
    .sign-body { flex: 1; overflow: auto; padding: 32px 32px 80px; display: flex; flex-direction: column; align-items: center; gap: 20px; }
    .sign-panel { width: 320px; border-left: 1px solid var(--border); background: var(--bg-card); padding: 20px; overflow: auto; flex-shrink: 0; }
    @media (max-width: 920px) { .recipient-header .actions { display: none; } .sign-layout { flex-direction: column; overflow: auto; } .sign-panel { width: 100%; border-left: 0; border-top: 1px solid var(--border); } .document-page { width: 560px; } }
  `];

  private get signFields() {
    return demoFields.slice(0, 3);
  }

  private fieldIcon(type: IFieldPlacement['type']): string {
    if (type === 'signature') return 'sign';
    if (type === 'date') return 'calendar';
    return 'type';
  }

  private signField(fieldId: string) {
    if (!this.signedFieldIds.includes(fieldId)) {
      this.signedFieldIds = [...this.signedFieldIds, fieldId];
    }
    const next = this.signFields.find((field) => !this.signedFieldIds.includes(field.id) && field.id !== fieldId);
    if (next) this.activeFieldId = next.id;
  }

  private renderSignedValue(field: IFieldPlacement): TemplateResult {
    if (field.type === 'signature') return html`<span style="font-family: 'Plus Jakarta Sans', cursive; font-size: 22px; font-weight: 600; font-style: italic; color: hsl(220 50% 30%);">Sarah Chen</span>`;
    if (field.type === 'date') return html`<span class="mono" style="font-size: 12px; color: hsl(0 0% 18%);">2026-05-02</span>`;
    return html`<span style="font-size: 12px; color: hsl(0 0% 18%);">Sarah Chen</span>`;
  }

  public render(): TemplateResult {
    const document = this.document || demoDocuments[0];
    const completed = this.signedFieldIds.length;
    const progress = Math.round((completed / this.signFields.length) * 100);
    const activeField = this.signFields.find((field) => field.id === this.activeFieldId) || this.signFields[0];

    return html`
      <div class="recipient-header">
        <div style="display: flex; align-items: center; gap: 12px;"><span class="logomark">s</span><div><div style="font-size: 12px; font-weight: 600;">${document.title}</div><div class="mono" style="font-size: 10px; color: var(--text-muted);">From ${document.sender} · ${document.id} · ${document.pages} pages</div></div></div>
        <div class="actions"><span class="pill success">${icon('shield', 12)} Verified sender · DKIM ✓</span>${actionButton('Decline', 'outline')}${actionButton('PDF', 'outline', 'download')}</div>
      </div>
      <div class="progress-track"><div class="progress-fill" style="width: ${progress}%"></div></div>
      <div class="sign-layout">
        <div class="sign-body">
          <div class="document-page" style="width: 620px; min-height: 820px;">
            ${fakeDocument()}
            ${this.signFields.map((field) => {
              const filled = this.signedFieldIds.includes(field.id);
              const active = this.activeFieldId === field.id && !filled;
              return html`<div class="field-box ${active ? 'selected' : ''}" style="--x: ${field.x}px; --y: ${field.y}px; --w: ${field.w}px; --h: ${field.h}px; --field-color: ${filled ? 'transparent' : 'var(--accent)'}; color: ${filled ? 'hsl(220 50% 30%)' : 'var(--accent)'}; background: ${filled ? 'transparent' : 'color-mix(in srgb, var(--accent) 12%, transparent)'};" @click=${() => !filled ? this.signField(field.id) : undefined}>${filled ? this.renderSignedValue(field) : html`${icon(this.fieldIcon(field.type), 12)}<span>${active ? html`<span style="display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); animation: pulse 1.4s infinite;"></span>` : ''}${field.label}</span>`}</div>`;
            })}
            <div class="mono" style="position: absolute; bottom: 14px; right: 18px; font-size: 9px; color: hsl(0 0% 60%);">Page 1 of ${document.pages}</div>
          </div>
        </div>
        <div class="sign-panel">
          <div style="display: flex; align-items: center; gap: 8px;"><span class="avatar" style="background: #60a5fa;">SC</span><div><div style="font-size: 13px; font-weight: 600;">Hi, Sarah</div><div class="mono" style="font-size: 10px; color: var(--text-muted);">sarah@acme.com</div></div></div>
          <div class="card" style="padding: 14px; margin-top: 16px;"><div class="label-upper">Your progress</div><div style="font-size: 24px; font-weight: 700;">${completed} <span style="color: var(--text-muted); font-weight: 400;">/ ${this.signFields.length}</span></div><div style="font-size: 11px; color: var(--text-muted); margin-top: 2px;">${this.signFields.length - completed === 0 ? 'All fields complete' : `${this.signFields.length - completed} fields remaining`}</div><div class="progress-track" style="margin-top: 12px;"><div class="progress-fill" style="width: ${progress}%"></div></div></div>
          <div style="margin-top: 20px;" class="label-upper">Step by step</div>
          ${this.signFields.map((field, index) => {
            const filled = this.signedFieldIds.includes(field.id);
            const active = this.activeFieldId === field.id && !filled;
            return html`<div class="recipient-line ${active ? 'active' : ''}" @click=${() => !filled ? this.activeFieldId = field.id : undefined}><span class="avatar" style="width: 22px; height: 22px; background: ${filled ? 'var(--success)' : active ? 'var(--accent)' : 'var(--bg-input)'}; color: ${filled || active ? 'white' : 'var(--text-muted)'};">${filled ? '✓' : index + 1}</span><div style="flex: 1;"><div style="font-size: 12px; font-weight: 500; text-decoration: ${filled ? 'line-through' : 'none'};">${field.label}</div><div class="mono" style="font-size: 10px; color: var(--text-muted);">${field.type} · page ${field.page}</div></div>${active ? icon('chevronRight', 12) : ''}</div>`;
          })}
          <button class="btn primary" style="width: 100%; height: 44px; margin-top: 20px;" @click=${() => this.signField(activeField.id)}>${completed === this.signFields.length ? 'Finish & submit' : `Continue - ${activeField.label}`}</button>
          <div style="margin-top: 12px; padding: 10px; font-size: 10px; color: var(--text-muted); line-height: 1.5; text-align: center; border-radius: 6px; background: var(--bg-el);">By signing, you agree to the ESIGN Act & eIDAS terms.<br /><span class="mono">IP 81.221.4.18 · Brussels, BE</span></div>
        </div>
      </div>
    `;
  }
}