import * as plugins from '../../plugins.js';
import {
  DeesElement,
  property,
  html,
  customElement,
  type TemplateResult,
  css,
  cssManager,
  unsafeCSS,
  state,
} from '@design.estate/dees-element';
import * as sharedStyles from '../../styles/shared.styles.js';
import type { IIncidentUpdateFormData, IIncidentDetails } from '../../interfaces/index.js';
import { demoFunc } from './upladmin-incident-update.demo.js';

declare global {
  interface HTMLElementTagNameMap {
    'upladmin-incident-update': UpladminIncidentUpdate;
  }
}

type TIncidentStatus = 'investigating' | 'identified' | 'monitoring' | 'resolved' | 'postmortem';

@customElement('upladmin-incident-update')
export class UpladminIncidentUpdate extends DeesElement {
  public static demo = demoFunc;

  @property({ type: Object })
  accessor incident: IIncidentDetails | null = null;

  @property({ type: Boolean })
  accessor loading: boolean = false;

  @state()
  accessor formData: IIncidentUpdateFormData = {
    status: 'investigating',
    message: '',
    author: '',
  };

  @state()
  accessor errors: Record<string, string> = {};

  private statusIcons: Record<TIncidentStatus, string> = {
    investigating: 'lucide:Search',
    identified: 'lucide:Target',
    monitoring: 'lucide:Eye',
    resolved: 'lucide:CheckCircle',
    postmortem: 'lucide:FileText',
  };

  public static styles = [
    plugins.domtools.elementBasic.staticStyles,
    sharedStyles.commonStyles,
    css`
      :host {
        display: block;
        font-family: ${unsafeCSS(sharedStyles.fonts.base)};
      }

      .update-container {
        background: ${sharedStyles.colors.background.secondary};
        border: 1px solid ${sharedStyles.colors.border.default};
        border-radius: ${unsafeCSS(sharedStyles.borderRadius.lg)};
        overflow: hidden;
      }

      .update-header {
        padding: ${unsafeCSS(sharedStyles.spacing.lg)};
        border-bottom: 1px solid ${sharedStyles.colors.border.default};
        background: ${sharedStyles.colors.background.muted};
      }

      .update-title-row {
        display: flex;
        align-items: center;
        gap: ${unsafeCSS(sharedStyles.spacing.md)};
        margin-bottom: ${unsafeCSS(sharedStyles.spacing.sm)};
      }

      .update-title-row dees-icon {
        --icon-color: ${cssManager.bdTheme('#3b82f6', '#60a5fa')};
      }

      .update-title {
        font-size: 18px;
        font-weight: 600;
        color: ${sharedStyles.colors.text.primary};
        margin: 0;
      }

      .incident-info {
        display: flex;
        align-items: center;
        gap: ${unsafeCSS(sharedStyles.spacing.sm)};
        padding-left: 36px;
      }

      .incident-name {
        font-size: 14px;
        color: ${sharedStyles.colors.text.secondary};
      }

      .severity-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 4px 10px;
        font-size: 11px;
        font-weight: 500;
        border-radius: 9999px;
        text-transform: uppercase;
      }

      .severity-badge dees-icon {
        font-size: 12px;
      }

      .severity-badge.critical {
        background: ${cssManager.bdTheme('rgba(239, 68, 68, 0.1)', 'rgba(239, 68, 68, 0.2)')};
        color: ${sharedStyles.colors.status.majorOutage};
        --icon-color: ${sharedStyles.colors.status.majorOutage};
      }

      .severity-badge.major {
        background: ${cssManager.bdTheme('rgba(249, 115, 22, 0.1)', 'rgba(249, 115, 22, 0.2)')};
        color: ${sharedStyles.colors.status.partialOutage};
        --icon-color: ${sharedStyles.colors.status.partialOutage};
      }

      .severity-badge.minor {
        background: ${cssManager.bdTheme('rgba(234, 179, 8, 0.1)', 'rgba(234, 179, 8, 0.2)')};
        color: ${sharedStyles.colors.status.degraded};
        --icon-color: ${sharedStyles.colors.status.degraded};
      }

      .severity-badge.maintenance {
        background: ${cssManager.bdTheme('rgba(59, 130, 246, 0.1)', 'rgba(59, 130, 246, 0.2)')};
        color: ${sharedStyles.colors.status.maintenance};
        --icon-color: ${sharedStyles.colors.status.maintenance};
      }

      .update-body {
        display: grid;
        gap: ${unsafeCSS(sharedStyles.spacing.lg)};
        padding: ${unsafeCSS(sharedStyles.spacing.lg)};
      }

      dees-form {
        display: contents;
      }

      .status-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
        gap: ${unsafeCSS(sharedStyles.spacing.sm)};
      }

      .status-option {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 10px;
        padding: 18px 14px;
        background: ${sharedStyles.colors.background.primary};
        border: 2px solid ${sharedStyles.colors.border.default};
        border-radius: ${unsafeCSS(sharedStyles.borderRadius.base)};
        cursor: pointer;
        transition: all ${unsafeCSS(sharedStyles.durations.fast)} ${unsafeCSS(sharedStyles.easings.default)};
        text-align: center;
      }

      .status-option:hover {
        border-color: ${sharedStyles.colors.border.strong};
        background: ${sharedStyles.colors.background.muted};
      }

      .status-option.selected {
        border-color: ${sharedStyles.colors.accent.primary};
        background: ${cssManager.bdTheme('rgba(59, 130, 246, 0.05)', 'rgba(96, 165, 250, 0.1)')};
      }

      .status-option input {
        display: none;
      }

      .status-option.investigating dees-icon { --icon-color: ${sharedStyles.colors.status.partialOutage}; }
      .status-option.identified dees-icon { --icon-color: ${sharedStyles.colors.status.degraded}; }
      .status-option.monitoring dees-icon { --icon-color: ${sharedStyles.colors.status.maintenance}; }
      .status-option.resolved dees-icon { --icon-color: ${sharedStyles.colors.status.operational}; }
      .status-option.postmortem dees-icon { --icon-color: #a855f7; }

      .status-label {
        font-size: 13px;
        font-weight: 600;
        color: ${sharedStyles.colors.text.primary};
      }

      .status-desc {
        font-size: 11px;
        color: ${sharedStyles.colors.text.muted};
        line-height: 1.3;
      }

      .field-label {
        display: block;
        font-size: 13px;
        font-weight: 500;
        color: ${sharedStyles.colors.text.primary};
        margin-bottom: ${unsafeCSS(sharedStyles.spacing.xs)};
      }

      .field-label.required::after {
        content: ' *';
        color: ${sharedStyles.colors.accent.danger};
      }

      .template-section {
        margin-bottom: ${unsafeCSS(sharedStyles.spacing.sm)};
      }

      .template-label {
        font-size: 12px;
        color: ${sharedStyles.colors.text.muted};
        margin-bottom: 8px;
      }

      .template-buttons {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
      }

      .template-btn {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 8px 14px;
        font-size: 12px;
        font-weight: 500;
        font-family: ${unsafeCSS(sharedStyles.fonts.base)};
        color: ${sharedStyles.colors.text.secondary};
        background: ${sharedStyles.colors.background.primary};
        border: 1px solid ${sharedStyles.colors.border.default};
        border-radius: ${unsafeCSS(sharedStyles.borderRadius.base)};
        cursor: pointer;
        transition: all ${unsafeCSS(sharedStyles.durations.fast)} ${unsafeCSS(sharedStyles.easings.default)};
      }

      .template-btn:hover {
        background: ${sharedStyles.colors.background.muted};
        border-color: ${sharedStyles.colors.border.strong};
        color: ${sharedStyles.colors.text.primary};
      }

      .template-btn dees-icon {
        --icon-color: currentColor;
        opacity: 0.6;
      }

      .update-actions {
        display: flex;
        justify-content: flex-end;
        gap: ${unsafeCSS(sharedStyles.spacing.sm)};
        padding: ${unsafeCSS(sharedStyles.spacing.md)} ${unsafeCSS(sharedStyles.spacing.lg)};
        border-top: 1px solid ${sharedStyles.colors.border.default};
        background: ${sharedStyles.colors.background.muted};
      }

      /* Style dees-input components */
      dees-input-text {
        --dees-input-background: ${sharedStyles.colors.background.primary};
        --dees-input-border-color: ${sharedStyles.colors.border.default};
      }
    `
  ];

  async connectedCallback() {
    await super.connectedCallback();
    if (this.incident) {
      this.formData = {
        ...this.formData,
        status: this.incident.status,
      };
    }
  }

  updated(changedProperties: Map<string, unknown>) {
    if (changedProperties.has('incident') && this.incident) {
      this.formData = {
        ...this.formData,
        status: this.incident.status,
      };
    }
  }

  public render(): TemplateResult {
    if (!this.incident) {
      return html`<div class="update-container">No incident selected</div>`;
    }

    const statusOptions: Array<{ value: TIncidentStatus; label: string; desc: string }> = [
      { value: 'investigating', label: 'Investigating', desc: 'Looking into the issue' },
      { value: 'identified', label: 'Identified', desc: 'Root cause found' },
      { value: 'monitoring', label: 'Monitoring', desc: 'Fix applied, watching' },
      { value: 'resolved', label: 'Resolved', desc: 'Issue is fixed' },
      { value: 'postmortem', label: 'Postmortem', desc: 'Analysis complete' },
    ];

    const templates: Array<{ icon: string; label: string; status: TIncidentStatus; message: string }> = [
      { icon: 'lucide:Search', label: 'Started investigating', status: 'investigating', message: 'We are currently investigating this issue.' },
      { icon: 'lucide:Target', label: 'Issue identified', status: 'identified', message: 'We have identified the root cause and are working on a fix.' },
      { icon: 'lucide:Rocket', label: 'Fix deployed', status: 'monitoring', message: 'A fix has been deployed. We are monitoring the results.' },
      { icon: 'lucide:CheckCircle', label: 'Resolved', status: 'resolved', message: 'This incident has been resolved. All systems are operating normally.' },
      { icon: 'lucide:FileText', label: 'Postmortem', status: 'postmortem', message: 'Postmortem will be released shortly.' },
    ];

    const severityIcons: Record<string, string> = {
      critical: 'lucide:AlertCircle',
      major: 'lucide:AlertTriangle',
      minor: 'lucide:Info',
      maintenance: 'lucide:Wrench',
    };

    return html`
      <div class="update-container">
        <div class="update-header">
          <div class="update-title-row">
            <dees-icon .icon=${'lucide:MessageSquarePlus'} .iconSize=${24}></dees-icon>
            <h2 class="update-title">Post Update</h2>
          </div>
          <div class="incident-info">
            <span class="severity-badge ${this.incident.severity}">
              <dees-icon .icon=${severityIcons[this.incident.severity]} .iconSize=${12}></dees-icon>
              ${this.incident.severity}
            </span>
            <span class="incident-name">${this.incident.title}</span>
          </div>
        </div>

        <div class="update-body">
          <dees-form>
            <div class="template-section">
              <label class="field-label">Quick Templates</label>
              <div class="template-label">Select a template to prefill status and message:</div>
              <div class="template-buttons">
                ${templates.map(tpl => html`
                  <button type="button" class="template-btn" @click="${() => this.applyTemplate(tpl)}">
                    <dees-icon .icon=${tpl.icon} .iconSize=${12}></dees-icon>
                    ${tpl.label}
                  </button>
                `)}
              </div>
            </div>

            <div>
              <label class="field-label required">Status</label>
              <div class="status-grid">
                ${statusOptions.map(opt => html`
                  <label
                    class="status-option ${opt.value} ${this.formData.status === opt.value ? 'selected' : ''}"
                    @click="${() => this.handleStatusChange(opt.value)}"
                  >
                    <input
                      type="radio"
                      name="status"
                      value="${opt.value}"
                      ?checked="${this.formData.status === opt.value}"
                    />
                    <dees-icon .icon=${this.statusIcons[opt.value]} .iconSize=${24}></dees-icon>
                    <span class="status-label">${opt.label}</span>
                    <span class="status-desc">${opt.desc}</span>
                  </label>
                `)}
              </div>
            </div>

            <div>
              <label class="field-label required">Update Message</label>
              <dees-input-text
                key="message"
                inputType="textarea"
                .value="${this.formData.message}"
                placeholder="Provide an update on the incident status..."
                required
                @changeSubject="${this.handleMessageChange}"
              ></dees-input-text>
            </div>

            <dees-input-text
              key="author"
              label="Author (Optional)"
              .value="${this.formData.author || ''}"
              placeholder="Your name or team name"
              @changeSubject="${this.handleAuthorChange}"
            ></dees-input-text>
          </dees-form>
        </div>

        <div class="update-actions">
          <dees-button type="discreet" @click="${this.handleCancel}" ?disabled="${this.loading}">
            Cancel
          </dees-button>
          ${this.formData.status === 'resolved' ? html`
            <dees-button type="highlighted" @click="${this.handlePost}" ?disabled="${this.loading}" style="--dees-button-background: ${sharedStyles.colors.status.operational}">
              ${this.loading ? html`<dees-spinner .size=${16}></dees-spinner>` : html`<dees-icon .icon=${'lucide:CheckCircle'} .iconSize=${16}></dees-icon>`}
              Resolve Incident
            </dees-button>
          ` : html`
            <dees-button type="highlighted" @click="${this.handlePost}" ?disabled="${this.loading}">
              ${this.loading ? html`<dees-spinner .size=${16}></dees-spinner>` : html`<dees-icon .icon=${'lucide:Send'} .iconSize=${16}></dees-icon>`}
              Post Update
            </dees-button>
          `}
        </div>
      </div>
    `;
  }

  private handleMessageChange(e: CustomEvent) {
    this.formData = { ...this.formData, message: e.detail };
    if (this.errors.message) {
      this.errors = { ...this.errors, message: '' };
    }
  }

  private handleAuthorChange(e: CustomEvent) {
    this.formData = { ...this.formData, author: e.detail };
  }

  private handleStatusChange(status: TIncidentStatus) {
    this.formData = { ...this.formData, status };
  }

  private applyTemplate(template: { status: TIncidentStatus; message: string }) {
    this.formData = { ...this.formData, status: template.status, message: template.message };
  }

  private validate(): boolean {
    const errors: Record<string, string> = {};

    if (!this.formData.message?.trim()) {
      errors.message = 'Update message is required';
    }

    this.errors = errors;
    return Object.keys(errors).length === 0;
  }

  private handlePost() {
    if (!this.validate()) {
      return;
    }

    this.dispatchEvent(new CustomEvent('updatePost', {
      detail: {
        incidentId: this.incident?.id,
        update: { ...this.formData }
      },
      bubbles: true,
      composed: true
    }));
  }

  private handleCancel() {
    this.dispatchEvent(new CustomEvent('updateCancel', {
      bubbles: true,
      composed: true
    }));
  }

  public reset() {
    this.formData = {
      status: this.incident?.status || 'investigating',
      message: '',
      author: '',
    };
    this.errors = {};
  }
}