<template>
  <div class="overflow-y-auto">
    <div class="mx-auto flex max-w-3xl flex-col gap-4 px-4 py-6">
      <header class="flex items-center gap-3">
        <h1 class="text-lg font-semibold text-zinc-100">{{ t('dashboard.title') }}</h1>
        <span v-if="auth.serverVersion" class="text-xs text-zinc-600">v{{ auth.serverVersion }}</span>
        <div class="ml-auto flex items-center gap-2">
          <RouterLink :to="{ name: 'sessions' }" class="btn">{{ t('dashboard.allSessions') }}</RouterLink>
          <button class="btn" :disabled="store.loading" @click="store.fetchAll()">{{ t('sessions.refresh') }}</button>
          <button
            v-if="push.supported"
            class="btn"
            :class="push.enabled ? 'border-emerald-700 text-emerald-300' : ''"
            :disabled="push.busy"
            :title="pushErrorText"
            @click="push.toggle()"
          >
            {{ push.enabled ? t('push.disable') : t('push.enable') }}
          </button>
          <LanguageSwitcher />
          <button class="btn" @click="onLogout">{{ t('common.logout') }}</button>
        </div>
      </header>
      <p v-if="pushErrorText" class="text-xs text-amber-400">{{ pushErrorText }}</p>

      <form class="flex flex-col gap-2 rounded-lg border border-zinc-800 bg-zinc-900/50 p-3 sm:flex-row sm:items-end" @submit.prevent="onAddRepo">
        <label class="flex flex-1 flex-col gap-1 text-xs text-zinc-400">
          {{ t('repos.pathLabel') }}
          <input v-model="newPath" type="text" class="input font-mono" :placeholder="t('repos.pathPlaceholder')" required />
        </label>
        <button type="submit" class="btn-primary whitespace-nowrap" :disabled="adding || newPath.trim() === ''">
          {{ adding ? t('repos.adding') : t('repos.add') }}
        </button>
      </form>
      <p v-if="addError" class="text-sm text-red-400">{{ addError }}</p>

      <p v-if="store.loadError" class="text-sm text-red-400">{{ store.loadError }}</p>
      <p v-else-if="store.loading && store.repos.length === 0" class="text-sm text-zinc-500">{{ t('common.loading') }}</p>
      <p v-else-if="store.repos.length === 0" class="text-sm text-zinc-500">{{ t('repos.empty') }}</p>

      <RepoSection v-for="repo in store.repos" :key="repo.id" :repo="repo" />
    </div>
  </div>
</template>

<script setup lang="ts">
import { computed, onMounted, ref } from 'vue';
import { useRouter } from 'vue-router';
import { useI18n } from 'vue-i18n';
import { useAuthStore } from '../stores/auth';
import { useWorktreesStore } from '../stores/worktrees';
import { useSessionsStore } from '../stores/sessions';
import { usePushStore } from '../stores/push';
import LanguageSwitcher from '../components/LanguageSwitcher.vue';
import RepoSection from '../components/RepoSection.vue';

const { t } = useI18n();
const router = useRouter();
const auth = useAuthStore();
const store = useWorktreesStore();
const sessions = useSessionsStore();
const push = usePushStore();

const newPath = ref('');
const adding = ref(false);
const addError = ref<string | null>(null);

// 'denied'/'unsupported' sont des clés i18n ; tout autre message d'erreur est affiché tel quel.
const pushErrorText = computed(() => {
  const e = push.error;
  if (!e) return '';
  return e === 'denied' || e === 'unsupported' ? t(`push.${e}`) : e;
});

onMounted(() => {
  void store.fetchAll();
  store.startRealtime();
  // les sessions alimentent la corrélation worktree↔session (cwd) côté serveur ; on charge et on
  // suit leurs mises à jour temps réel pour que les badges d'état (busy/waiting/idle) restent live.
  void sessions.fetchSessions();
  sessions.startRealtime();
  void push.refresh();
});

async function onAddRepo(): Promise<void> {
  adding.value = true;
  addError.value = null;
  try {
    await store.addRepo(newPath.value.trim());
    newPath.value = '';
  } catch (err) {
    addError.value = err instanceof Error ? err.message : String(err);
  } finally {
    adding.value = false;
  }
}

async function onLogout(): Promise<void> {
  store.stopRealtime();
  sessions.stopRealtime();
  await auth.logout();
  await router.replace({ name: 'login' });
}
</script>
