{% extends "base.html" %}
{% block title %}{{ _('Disegno Task') }} #{{ (task.order_index or 0) + 1 }} — {{ recipe.code }} — TieMeasureFlow{% endblock %}

{% block extra_head %}
<style>
  /* Annotation toolbar button */
  .anno-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.375rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 0.375rem;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
    gap: 0.25rem;
  }
  .anno-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--text-muted);
  }
  .anno-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
  }
  .anno-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
  }

  /* Canvas container — use custom class name to avoid conflict with
     Fabric.js internal .canvas-container wrapper div */
  .anno-canvas-wrap {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow: hidden;
    min-height: 400px;
  }
  .anno-canvas-wrap canvas {
    display: block;
  }
  /* Fabric.js internal wrapper also needs display:block on canvases */
  .canvas-container canvas {
    display: block;
  }
</style>
{% endblock %}

{% block content %}
<script>
  window.__taskData = {{ task|tojson }};
  window.__i18n_taskDrawing = {
    saving: {{ _("Salvataggio...")|tojson }},
    saveAnnotations: {{ _("Salva Annotazioni")|tojson }},
    saveError: {{ _("Errore nel salvataggio delle annotazioni")|tojson }},
    saveSuccess: {{ _("Annotazioni salvate con successo")|tojson }},
    connectionError: {{ _("Errore di connessione al server")|tojson }}
  };
</script>
<div class="container mx-auto px-4 sm:px-6 lg:px-8 py-8 max-w-5xl"
     x-data="taskDrawing()"
     x-cloak>

  <!-- ============================================================
       Breadcrumb
       ============================================================ -->
  <nav class="mb-6" aria-label="Breadcrumb">
    <ol class="flex items-center gap-2 text-sm text-[var(--text-secondary)]">
      <li>
        <a href="{{ url_for('maker.recipe_list') }}"
           class="hover:text-primary transition-colors inline-flex items-center gap-1">
          <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="1.75" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round"
                  d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"/>
          </svg>
          {{ _('Ricette') }}
        </a>
      </li>
      <li>
        <svg class="w-4 h-4 text-[var(--text-muted)]" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
          <path stroke-linecap="round" stroke-linejoin="round" d="M9 5l7 7-7 7"/>
        </svg>
      </li>
      <li>
        <a href="{{ url_for('maker.recipe_edit', recipe_id=recipe.id) }}"
           class="hover:text-primary transition-colors">
          {{ recipe.code }}
        </a>
      </li>
      <li>
        <svg class="w-4 h-4 text-[var(--text-muted)]" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
          <path stroke-linecap="round" stroke-linejoin="round" d="M9 5l7 7-7 7"/>
        </svg>
      </li>
      <li>
        <a href="{{ url_for('maker.task_editor', recipe_id=recipe.id) }}"
           class="hover:text-primary transition-colors">
          {{ _('Task') }}
        </a>
      </li>
      <li>
        <svg class="w-4 h-4 text-[var(--text-muted)]" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
          <path stroke-linecap="round" stroke-linejoin="round" d="M9 5l7 7-7 7"/>
        </svg>
      </li>
      <li class="font-medium text-[var(--text-primary)]">
        {{ _('Disegno Task') }} #{{ (task.order_index or 0) + 1 }}
      </li>
    </ol>
  </nav>

  <!-- ============================================================
       Header
       ============================================================ -->
  <div class="mb-6">
    <div class="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4">
      <div>
        <h1 class="text-2xl font-bold text-[var(--text-primary)] mb-1">
          {{ _('Annotazioni Disegno') }}
          <span class="text-[var(--text-muted)] text-lg font-normal ml-2">
            Task #{{ (task.order_index or 0) + 1 }}
          </span>
        </h1>
        <p class="text-sm text-[var(--text-secondary)]">{{ task.title or '' }}</p>
      </div>

      <div class="flex items-center gap-2 shrink-0 flex-wrap">
        <button @click="saveAnnotations()"
                :disabled="saving"
                class="btn btn-primary gap-1.5">
          <svg x-show="!saving" class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7"/>
          </svg>
          <svg x-show="saving" class="w-4 h-4 animate-spin" fill="none" viewBox="0 0 24 24">
            <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"/>
            <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8v4a4 4 0 00-4 4H4z"/>
          </svg>
          <span x-text="saving ? window.__i18n_taskDrawing.saving : window.__i18n_taskDrawing.saveAnnotations"></span>
        </button>

        <a :href="'{{ url_for('maker.task_editor', recipe_id=recipe.id) }}' + '?_=' + Date.now()"
           class="btn btn-secondary gap-1.5">
          <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" d="M11 17l-5-5m0 0l5-5m-5 5h12"/>
          </svg>
          {{ _('Torna ai Task') }}
        </a>
      </div>
    </div>
  </div>

  <!-- ============================================================
       Error/Success Banners
       ============================================================ -->
  <div x-show="errorMessage"
       x-transition
       class="mb-4 flex items-center gap-3 px-4 py-3 rounded-lg
              bg-red-50 dark:bg-red-900/30 border border-red-200 dark:border-red-800
              text-red-800 dark:text-red-200 text-sm">
    <svg class="w-5 h-5 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
            d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
    </svg>
    <span x-text="errorMessage"></span>
    <button @click="errorMessage = ''" class="ml-auto shrink-0 hover:opacity-70">
      <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
      </svg>
    </button>
  </div>

  <div x-show="successMessage"
       x-transition
       x-init="$watch('successMessage', v => { if (v) setTimeout(() => successMessage = '', 4000) })"
       class="mb-4 flex items-center gap-3 px-4 py-3 rounded-lg
              bg-emerald-50 dark:bg-emerald-900/30 border border-emerald-200 dark:border-emerald-800
              text-emerald-800 dark:text-emerald-200 text-sm">
    <svg class="w-5 h-5 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
            d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"/>
    </svg>
    <span x-text="successMessage"></span>
  </div>

  <!-- ============================================================
       Annotation Toolbar
       ============================================================ -->
  <div class="tmf-card mb-4">
    <div class="p-3 space-y-2">
      <!-- Row 1: Drawing Tools -->
      <div class="flex flex-wrap items-center gap-1.5">
        <!-- Select Tool -->
        <button type="button"
                class="anno-btn"
                :class="{ 'active': annoTool === 'select' }"
                @click="setAnnoTool('select')"
                title="{{ _('Seleziona') }}">
          <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" d="M15 15l-2 5L9 9l11 4-5 2z"/>
          </svg>
          <span class="hidden sm:inline">{{ _('Seleziona') }}</span>
        </button>

        <!-- Marker Tool -->
        <button type="button"
                class="anno-btn"
                :class="{ 'active': annoTool === 'marker' }"
                @click="setAnnoTool('marker')"
                title="{{ _('Marker numerato') }}">
          <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round"
                  d="M17.657 16.657L13.414 20.9a1.998 1.998 0 01-2.827 0l-4.244-4.243a8 8 0 1111.314 0z"/>
            <path stroke-linecap="round" stroke-linejoin="round" d="M15 11a3 3 0 11-6 0 3 3 0 016 0z"/>
          </svg>
          <span class="hidden sm:inline">{{ _('Marker') }} #</span>
        </button>

        <!-- Arrow Tool -->
        <button type="button"
                class="anno-btn"
                :class="{ 'active': annoTool === 'arrow' }"
                @click="setAnnoTool('arrow')"
                title="{{ _('Freccia') }}">
          <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" d="M17 8l4 4m0 0l-4 4m4-4H3"/>
          </svg>
          <span class="hidden sm:inline">{{ _('Freccia') }}</span>
        </button>

        <!-- Rectangle Tool -->
        <button type="button"
                class="anno-btn"
                :class="{ 'active': annoTool === 'rect' }"
                @click="setAnnoTool('rect')"
                title="{{ _('Rettangolo') }}">
          <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
            <rect x="3" y="3" width="18" height="18" rx="2" ry="2"/>
          </svg>
          <span class="hidden sm:inline">{{ _('Rettangolo') }}</span>
        </button>

        <!-- Separator -->
        <div class="w-px h-6 bg-[var(--border-color)] mx-1"></div>

        <!-- Delete selected -->
        <button type="button"
                class="anno-btn text-red-500 hover:text-red-600"
                @click="deleteAnnotation()"
                :disabled="!annoSelected"
                title="{{ _('Elimina selezionato') }}">
          <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round"
                  d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"/>
          </svg>
          {{ _('Elimina') }}
        </button>

        <!-- Clear All -->
        <button type="button"
                class="anno-btn text-red-500 hover:text-red-600"
                @click="if (confirm('{{ _('Eliminare tutte le annotazioni?') }}')) clearAllAnnotations()"
                title="{{ _('Cancella tutto') }}">
          <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round"
                  d="M9 13h6m2 9H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"/>
            <path stroke-linecap="round" stroke-linejoin="round"
                  d="M6 18L18 6M6 6l12 12"/>
          </svg>
          {{ _('Cancella tutto') }}
        </button>

      </div>

      <!-- Row 2: Color, Stroke Width, Line Style -->
      <div class="flex flex-wrap items-center gap-1.5 pt-1 border-t border-[var(--border-color)]">
        <!-- Color picker -->
        <span class="text-xs text-[var(--text-muted)] mr-1">{{ _('Colore') }}:</span>
        <template x-for="c in colorOptions" :key="c.value">
          <button type="button"
                  class="w-6 h-6 rounded-full border-2 transition-all"
                  :style="'background-color: ' + c.value"
                  :class="propsDisabled ? 'border-[var(--border-color)] opacity-30 cursor-not-allowed' : (annoColor === c.value ? 'border-[var(--text-primary)] scale-110 ring-2 ring-offset-1 ring-[var(--color-primary)]' : 'border-[var(--border-color)] hover:scale-105')"
                  :title="c.label"
                  :disabled="propsDisabled"
                  @click="setAnnoColor(c.value)">
          </button>
        </template>

        <!-- Separator -->
        <div class="w-px h-6 bg-[var(--border-color)] mx-1.5"></div>

        <!-- Stroke width -->
        <span class="text-xs text-[var(--text-muted)] mr-1">{{ _('Spessore') }}:</span>
        <template x-for="sw in strokeOptions" :key="sw">
          <button type="button"
                  class="anno-btn"
                  :class="{ 'active': annoStrokeWidth === sw }"
                  :disabled="propsDisabled"
                  @click="setAnnoStrokeWidth(sw)"
                  :title="sw + 'px'">
            <div class="flex items-center justify-center w-4 h-4">
              <div class="rounded-full bg-current" :style="'width: ' + (sw + 2) + 'px; height: ' + (sw + 2) + 'px'"></div>
            </div>
          </button>
        </template>

        <!-- Separator -->
        <div class="w-px h-6 bg-[var(--border-color)] mx-1.5"></div>

        <!-- Line style -->
        <span class="text-xs text-[var(--text-muted)] mr-1">{{ _('Linea') }}:</span>
        <template x-for="ls in lineDashOptions" :key="ls.icon">
          <button type="button"
                  class="anno-btn"
                  :class="{ 'active': JSON.stringify(annoLineDash) === JSON.stringify(ls.value) }"
                  :disabled="propsDisabled"
                  @click="setAnnoLineDash(ls.value)"
                  :title="ls.label">
            <div class="flex items-center justify-center w-5 h-4">
              <template x-if="ls.icon === 'solid'">
                <div class="w-full h-0.5 bg-current"></div>
              </template>
              <template x-if="ls.icon === 'dashed'">
                <div class="w-full h-0.5 flex gap-0.5">
                  <div class="flex-1 bg-current"></div>
                  <div class="flex-1 bg-current"></div>
                  <div class="flex-1 bg-current"></div>
                </div>
              </template>
              <template x-if="ls.icon === 'dotted'">
                <div class="w-full h-0.5 flex gap-1 justify-center">
                  <div class="w-1 h-1 rounded-full bg-current"></div>
                  <div class="w-1 h-1 rounded-full bg-current"></div>
                  <div class="w-1 h-1 rounded-full bg-current"></div>
                  <div class="w-1 h-1 rounded-full bg-current"></div>
                </div>
              </template>
            </div>
          </button>
        </template>
      </div>
    </div>
  </div>

  <!-- ============================================================
       Canvas Area
       ============================================================ -->
  <div class="tmf-card">
    <div class="tmf-card-body p-0">
      <div x-data="annotationEditor()"
           class="anno-canvas-wrap"
           id="annotationCanvasContainer">
        <canvas id="annotationCanvas" x-ref="fabricCanvas"></canvas>
      </div>
    </div>
  </div>

</div>
{% endblock %}

{% block extra_js %}
<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/5.3.1/fabric.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js"></script>
<script>
  pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js';
</script>
<script src="{{ url_for('static', filename='js/annotation-editor.js') }}?v=25"></script>
<script>
function taskDrawing() {
  const taskData = window.__taskData || {};

  return {
    taskId: taskData.id || null,
    recipeId: {{ recipe.id|tojson }},

    // Annotation state
    annoTool: 'select',
    annoSelected: false,
    annoSelectedType: null,
    annotationsJson: taskData.annotations_json || null,

    // Color and stroke width
    annoColor: '#2563EB',
    annoStrokeWidth: 2,
    colorOptions: [
      { value: '#2563EB', label: {{ _('Blu')|tojson }} },
      { value: '#DC2626', label: {{ _('Rosso')|tojson }} },
      { value: '#16A34A', label: {{ _('Verde')|tojson }} },
      { value: '#F59E0B', label: {{ _('Arancio')|tojson }} },
      { value: '#8B5CF6', label: {{ _('Viola')|tojson }} },
      { value: '#000000', label: {{ _('Nero')|tojson }} },
    ],
    strokeOptions: [1, 2, 3, 4],
    annoLineDash: [],
    lineDashOptions: [
      { value: [], label: {{ _('Continua')|tojson }}, icon: 'solid' },
      { value: [8, 4], label: {{ _('Tratteggiata')|tojson }}, icon: 'dashed' },
      { value: [3, 3], label: {{ _('Punteggiata')|tojson }}, icon: 'dotted' },
    ],

    // Save state
    saving: false,
    errorMessage: '',
    successMessage: '',

    get propsDisabled() {
      var isDrawingTool = this.annoTool === 'marker' || this.annoTool === 'arrow' || this.annoTool === 'rect';
      return !isDrawingTool && !this.annoSelected;
    },

    init() {
      // Listen for annotation selection events from annotation-editor.js
      window.addEventListener('annotation-selected', (e) => {
        this.annoSelected = e.detail.selected;
        this.annoSelectedType = e.detail.objectType || null;
      });

      // Listen for annotation data changes
      window.addEventListener('annotations-changed', (e) => {
        this.annotationsJson = e.detail.json;
      });

      // Listen for mode changes from annotation editor (auto-select after placing)
      window.addEventListener('anno-mode-changed', (e) => {
        if (e.detail && e.detail.mode) {
          this.annoTool = e.detail.mode;
        }
      });

      // Load the image into the annotation editor
      if (taskData.file_path) {
        this.$nextTick(() => {
          window.dispatchEvent(new CustomEvent('image-loaded', {
            detail: {
              path: taskData.file_path,
              annotations: taskData.annotations_json || null
            }
          }));
        });
      }
    },

    // ---- Save annotations to task ----
    async saveAnnotations() {
      this.saving = true;
      this.errorMessage = '';

      const csrfToken = document.querySelector('meta[name=csrf-token]')?.content || '';

      const payload = {};
      if (this.annotationsJson) {
        payload.annotations_json = (typeof this.annotationsJson === 'string')
          ? JSON.parse(this.annotationsJson)
          : this.annotationsJson;
      }

      try {
        const resp = await fetch(`/maker/api/tasks/${this.taskId}`, {
          method: 'PUT',
          headers: {
            'Content-Type': 'application/json',
            'X-CSRFToken': csrfToken
          },
          body: JSON.stringify(payload)
        });

        const data = await resp.json();

        if (data.error) {
          this.errorMessage = data.detail || window.__i18n_taskDrawing.saveError;
        } else {
          this.successMessage = window.__i18n_taskDrawing.saveSuccess;
          // Store updated annotations in sessionStorage so task_editor
          // can pick them up and refresh the preview immediately.
          try {
            sessionStorage.setItem('taskDrawingUpdated', JSON.stringify({
              taskId: this.taskId,
              annotations_json: this.annotationsJson
            }));
          } catch (_e) { /* sessionStorage may be unavailable */ }
        }
      } catch (err) {
        console.error('saveAnnotations error:', err);
        this.errorMessage = window.__i18n_taskDrawing.connectionError;
      }

      this.saving = false;
    },

    // ---- Annotation Tools ----
    setAnnoTool(tool) {
      this.annoTool = tool;
      window.dispatchEvent(new CustomEvent('anno-tool-change', {
        detail: { tool }
      }));
    },

    deleteAnnotation() {
      window.dispatchEvent(new CustomEvent('anno-delete-selected'));
    },

    clearAllAnnotations() {
      window.dispatchEvent(new CustomEvent('anno-clear-all'));
    },

    setAnnoColor(color) {
      this.annoColor = color;
      window.dispatchEvent(new CustomEvent('anno-color-change', {
        detail: { color }
      }));
    },

    setAnnoStrokeWidth(width) {
      this.annoStrokeWidth = width;
      window.dispatchEvent(new CustomEvent('anno-stroke-width-change', {
        detail: { width }
      }));
    },

    setAnnoLineDash(dash) {
      this.annoLineDash = dash;
      window.dispatchEvent(new CustomEvent('anno-line-dash-change', {
        detail: { dash }
      }));
    }
  };
}
</script>
{% endblock %}