<script setup lang="ts">
// <!-- ld-v2 --> Bloc « S'instruire » condensé — résumé toujours visible
// (titre, effets recherchés, ce que ça engage) + dépliables (texte, avis et
// objections, provenance). Auto-replié aux visites suivantes (localStorage).
import { useCollectiveStore } from '~/stores/collective'
import { BASELINE_PREFIX, ENGAGES_LABEL, INSTRUCT_BLOCK, ROUTE_LABELS } from '~/lexicon'
import type { Decision, Id } from '~/types/domain'

const props = defineProps<{ decision: Decision; secret?: boolean }>()
const col = useCollectiveStore()

const open = ref(true)
onMounted(() => {
  const key = `ld2-instruct-${props.decision.id}`
  if (localStorage.getItem(key)) open.value = false
  else localStorage.setItem(key, '1')
})

const effects = computed(() => props.decision.brief?.effects ?? [])
const advices = computed(() => col.advices.filter(a => a.decisionId === props.decision.id))
const objections = computed(() => col.objections.filter(o => o.decisionId === props.decision.id))
const parent = computed(() => col.decisions.find(d => d.id === props.decision.parentDecisionId))

function name(id: Id): string {
  return col.people.find(p => p.id === id)?.displayName ?? '—'
}
function day(iso: string): string {
  return new Date(iso).toLocaleDateString('fr-FR')
}

const POSITION_LABELS = { favorable: 'favorable', reserved: 'réservé', unfavorable: 'défavorable' } as const
const OBJECTION_STATUS = { open: 'ouverte', withdrawn: 'levée', integrated: 'intégrée', escalated: 'escaladée' } as const
</script>

<template>
  <!-- ld-v2 -->
  <section class="ld-card vi">
    <header class="vi__head">
      <h2 class="vi__title">
        <UIcon name="i-lucide-book-open" />
        <span>{{ INSTRUCT_BLOCK }}</span>
      </h2>
      <button class="ld-btn ld-btn--quiet vi__toggle" type="button" @click="open = !open">
        <span>{{ open ? 'Replier' : 'Voir le détail' }}</span>
        <UIcon :name="open ? 'i-lucide-chevron-up' : 'i-lucide-chevron-down'" />
      </button>
    </header>

    <!-- Résumé compact — toujours visible -->
    <p class="vi__sentence">{{ decision.title }}</p>
    <ul v-if="effects.length" class="vi__effects">
      <li v-for="(effect, i) in effects" :key="i">
        <UIcon name="i-lucide-target" class="vi__effect-icon" />
        <span>{{ effect.label }}</span>
        <span v-if="effect.target" class="vi__target">{{ effect.target }}</span>
      </li>
    </ul>
    <p v-if="decision.resources?.note" class="vi__engages">
      <span class="vi__engages-label">{{ ENGAGES_LABEL }}</span>
      <span>{{ decision.resources.note }}</span>
      <strong v-if="decision.resources.amount !== undefined">
        {{ decision.resources.amount.toLocaleString('fr-FR') }} {{ decision.resources.unit ?? '' }}
      </strong>
    </p>

    <!-- Dépliables -->
    <div v-if="open" class="vi__details">
      <details v-if="decision.body || decision.baselineNote">
        <summary>Le texte</summary>
        <p v-if="decision.baselineNote" class="vi__baseline">
          {{ BASELINE_PREFIX }} {{ decision.baselineNote }}
        </p>
        <p class="vi__body">{{ decision.body ?? decision.title }}</p>
      </details>

      <details v-if="advices.length || objections.length">
        <summary>Avis et objections ({{ advices.length + objections.length }})</summary>
        <ul class="vi__list">
          <li v-for="advice in advices" :key="advice.id">
            <span class="vi__who">{{ secret ? 'quelqu’un' : name(advice.personId) }}</span>
            <span class="vi__pos">{{ POSITION_LABELS[advice.position] }}</span>
            <span v-if="advice.note" class="vi__note">{{ advice.note }}</span>
          </li>
          <li v-for="objection in objections" :key="objection.id">
            <span class="vi__who">{{ secret ? 'quelqu’un' : name(objection.personId) }}</span>
            <span class="vi__pos vi__pos--objection">objection {{ OBJECTION_STATUS[objection.status] }}</span>
            <span class="vi__note">{{ objection.argument }}</span>
          </li>
        </ul>
      </details>

      <details>
        <summary>Provenance</summary>
        <ul class="vi__list">
          <li>Proposé par {{ name(decision.authorId) }} le {{ day(decision.createdAt) }}</li>
          <li>Chemin : {{ ROUTE_LABELS[decision.route] }}</li>
          <li v-if="parent">
            Chaînée à
            <NuxtLink :to="`/decisions/${parent.id}`" class="vi__link">{{ parent.title }}</NuxtLink>
          </li>
          <li v-if="decision.decidedHow">{{ decision.decidedHow }}</li>
        </ul>
      </details>
    </div>
  </section>
</template>

<style scoped>
.vi { padding: 1.1rem 1.25rem; display: flex; flex-direction: column; gap: 0.6rem; }
.vi__head { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; }
.vi__title {
  display: inline-flex; align-items: center; gap: 0.45rem; margin: 0;
  font-size: 0.9375rem; font-weight: 700; color: var(--mood-accent);
}
.vi__toggle { padding: 0.25rem 0.75rem; font-size: 0.8125rem; }
.vi__sentence { margin: 0; font-weight: 700; font-size: 1.0625rem; line-height: 1.35; }
.vi__effects { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.3rem; }
.vi__effects li { display: flex; align-items: baseline; gap: 0.45rem; font-size: 0.9375rem; }
.vi__effect-icon { color: var(--mood-tertiary); flex-shrink: 0; transform: translateY(2px); }
.vi__target {
  font-size: 0.75rem; font-weight: 700; color: var(--mood-tertiary);
  background: color-mix(in srgb, var(--mood-tertiary) 12%, transparent);
  padding: 1px 8px; border-radius: var(--r-pill); white-space: nowrap;
}
.vi__engages {
  margin: 0; display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.4rem;
  font-size: 0.9375rem; color: var(--mood-text);
  background: var(--mood-accent-soft); border-radius: var(--r-input); padding: 0.5rem 0.75rem;
}
.vi__engages-label { font-size: 0.75rem; font-weight: 700; color: var(--mood-accent); text-transform: uppercase; letter-spacing: 0.04em; }
.vi__details { display: flex; flex-direction: column; gap: 0.35rem; }
.vi__details details { background: var(--mood-bg); border-radius: var(--r-input); padding: 0.55rem 0.8rem; }
.vi__details summary { cursor: pointer; font-weight: 700; font-size: 0.875rem; color: var(--mood-text-muted); user-select: none; }
.vi__baseline { font-size: 0.875rem; color: var(--mood-text-muted); font-style: italic; margin: 0.5rem 0 0.25rem; }
.vi__body { white-space: pre-wrap; font-size: 0.9375rem; line-height: 1.5; margin: 0.5rem 0 0; }
.vi__list { list-style: none; margin: 0.5rem 0 0; padding: 0; display: flex; flex-direction: column; gap: 0.4rem; font-size: 0.875rem; }
.vi__who { font-weight: 700; margin-right: 0.35rem; }
.vi__pos { color: var(--mood-tertiary); font-weight: 600; margin-right: 0.35rem; }
.vi__pos--objection { color: var(--mood-warning); }
.vi__note { color: var(--mood-text-muted); }
.vi__link { color: var(--mood-accent); font-weight: 600; text-decoration: none; }
.vi__link:hover { text-decoration: underline; }
</style>
