<template>
    <div class="chapter-reader" :class="{ rtl: store.readingDirection === 'rtl' }">
        <div v-if="store.isLoading" class="loading">
            <div class="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-600"></div>
        </div>

        <div v-else-if="store.error" class="error">
            {{ store.error }}
        </div>

        <div v-else class="reader-content">
            <template v-if="store.readingMode === 'single'">
                <SingleModeReader
                    :page-data="store.currentPageData"
                    :page-number="store.currentPage + 1"
                    :zoom="store.zoom"
                    :double-page-mode="store.effectiveDoublePageMode"
                    @button-click="showButtonsWithTimer" />
            </template>
            <template v-else>
                <InfiniteReader
                    :pages="store.pages"
                    :zoom="store.zoom"
                    :double-page-mode="store.effectiveDoublePageMode"
                    :initial-page="store.currentPage"
                    @page-visible="store.handlePageVisible"
                    ref="infiniteReaderRef" />
            </template>
        </div>
    </div>
</template>

<script setup>
    import { onMounted, onUnmounted, ref, watch } from 'vue';
import { useHeaderStore } from '../../../../shared/stores/headerStore';
import { useUserPreferencesStore } from '../../../../domain/setting/application/store/userPreferencesStore';
import { useReaderStore } from '../../application/store/readerStore';
import InfiniteReader from './InfiniteReader.vue';
import SingleModeReader from './SingleModeReader.vue';

    const props = defineProps({
        chapterId: {
            type: String,
            required: true
        },
        availableChapters: {
            type: Array,
            default: () => []
        }
    });

    const store = useReaderStore();
    const headerStore = useHeaderStore();
    const prefs = useUserPreferencesStore();

    const infiniteReaderRef = ref(null);

    // Actions de l'interface lecteur
    const toggleReadingMode = () => {
        const newMode = store.readingMode === 'single' ? 'infinite' : 'single';
        store.setReadingMode(newMode);
        prefs.setReadingMode(newMode === 'infinite' ? 'scroll' : 'single');

        if (newMode === 'single') {
            headerStore.disableAutoHide();
            headerStore.disableReaderToolbarAutoHide();
        } else {
            headerStore.enableReaderToolbarAutoHide();
            headerStore.enableAutoHide();
            showButtonsWithTimer();
        }
    };

    const toggleReadingDirection = () => {
        const newDir = store.readingDirection === 'ltr' ? 'rtl' : 'ltr';
        store.setReadingDirection(newDir);
        prefs.setReadingDirection(newDir);
    };

    const zoomIn = () => store.setZoom(Math.min(store.zoom + 0.1, 2));
    const zoomOut = () => store.setZoom(Math.max(store.zoom - 0.1, 0.5));

    const handleZoomChange = (zoom) => store.setZoom(zoom);

    const handleDoublePageModeChange = (mode) => store.setDoublePageMode(mode);
    const handleDoublePageAutoDetectChange = (enabled) => store.setDoublePageAutoDetect(enabled);
    const handleDetectionThresholdChange = (threshold) => store.setDoublePageDetectionThreshold(threshold);
    const handleResetPreferences = () => store.resetPreferences();

    const showButtonsWithTimer = () => {
        if (store.readingMode === 'infinite' && infiniteReaderRef.value) {
            infiniteReaderRef.value.showButtonsWithTimer();
        }
    };

    const resetButtonsTimer = () => {
        if (store.readingMode === 'infinite' && infiniteReaderRef.value) {
            infiniteReaderRef.value.resetButtonsTimer();
        }
    };

    const handleKeyPress = event => {
        if (store.readingMode === 'single') {
            if (event.key === 'ArrowRight') {
                store.nextPage();
            } else if (event.key === 'ArrowLeft') {
                store.previousPage();
            }
        }
    };

    watch(
        () => props.chapterId,
        newId => {
            if (newId) {
                store.loadChapter(newId);
            }
        },
        { immediate: true }
    );

    onMounted(() => {
        store.loadPreferences();
        window.addEventListener('keydown', handleKeyPress);

        if (prefs.autoHideHeaderReader) {
            headerStore.enableAutoHide();
        }

        if (store.readingMode === 'infinite') {
            headerStore.enableReaderToolbarAutoHide();
        }

        if (prefs.autoFullscreen && document.documentElement.requestFullscreen) {
            document.documentElement.requestFullscreen().catch(() => {});
        }
    });

    onUnmounted(() => {
        window.removeEventListener('keydown', handleKeyPress);
        headerStore.disableAutoHide();
        headerStore.disableReaderToolbarAutoHide();
    });

    defineExpose({
        toggleReadingMode,
        toggleReadingDirection,
        zoomIn,
        zoomOut,
        handleZoomChange,
        handleDoublePageModeChange,
        handleDoublePageAutoDetectChange,
        handleDetectionThresholdChange,
        handleResetPreferences,
        resetButtonsTimer,
        showButtonsWithTimer,
    });
</script>

<style lang="postcss" scoped>
    .chapter-reader {
        @apply w-full h-full flex flex-col bg-gray-900 text-white;
    }

    .loading {
        @apply flex items-center justify-center h-full;
    }

    .error {
        @apply text-red-500 text-xl;
    }

    .reader-content {
        @apply w-full flex-1 flex flex-col min-h-0;
    }

    .rtl {
        direction: rtl;
    }
</style>
