<template>
    <div>
        <ul class="flex space-x-2 rtl:space-x-reverse">
            <li>
                <a href="javascript:;" class="text-primary hover:underline">Konten</a>
            </li>
            <li class="before:mr-2 before:content-['/'] rtl:before:ml-2">
                <NuxtLink to="/content/contents/list" class="text-primary hover:underline">Daftar Konten</NuxtLink>
            </li>
            <li class="before:mr-2 before:content-['/'] rtl:before:ml-2">
                <span>Edit Konten</span>
            </li>
        </ul>

        <div class="grid grid-cols-1 gap-6 pt-5">
            <div class="panel">
                <div class="mb-5 flex items-center justify-between">
                    <h5 class="text-lg font-semibold dark:text-white-light">Edit Konten</h5>
                    <NuxtLink to="/content/contents/list" class="dark:text-white-light btn btn-dark !py-1">
                        <icon-arrow-backward class="me-1" />
                        Daftar
                    </NuxtLink>
                </div>
                <div class="mb-5">
                    <form class="space-y-5" @submit.prevent="submitForm()">
                        <div class="grid grid-cols-1 gap-4 md:grid-cols-4 gap-2">
                            <div :class="{ 'has-error': $validate.form.title.$error, 'has-success': isSubmitted && !$validate.form.title.$error }">
                                <label for="title">Judul</label>
                                <input id="title" type="text" class="form-input" v-model="form.title" />
                                <template v-if="isSubmitted && $validate.form.title.$error">
                                    <p class="text-danger mt-1">Judul konten harus diisi</p>
                                </template>
                            </div>
                            <div :class="{ 'has-error': $validate.form.slug.$error, 'has-success': isSubmitted && !$validate.form.slug.$error }">
                                <label for="slug">Slug</label>
                                <input id="slug" type="text" class="form-input" v-model="form.slug" />
                                <template v-if="isSubmitted && $validate.form.slug.$error">
                                    <p class="text-danger mt-1">Slug konten harus diisi</p>
                                </template>
                            </div>
                            <div :class="{ 'has-error': $validate.form.status.$error, 'has-success': isSubmitted && !$validate.form.status.$error }">
                                <label for="status">Status</label>
                                <multiselect id="status"
                                    v-model="form.status"
                                    :options="statuses?.results"
                                    class="custom-multiselect"
                                    :searchable="true"
                                    placeholder="Pilih status konten"
                                    selected-label=""
                                    select-label=""
                                    deselect-label=""
                                    label="label"
                                    track-by="value"
                                ></multiselect>
                                <template v-if="isSubmitted && $validate.form.status.$error">
                                    <p class="text-danger mt-1">Jenis status harus diisi</p>
                                </template>
                            </div>
                            <div v-if="form.status?.value === 'published'" :class="{ 'has-error': $validate.form.posted_at.$error, 'has-success': isSubmitted && !$validate.form.posted_at.$error }"> 
                                <label for="posted_at">Tanggal Publikasi</label>
                                <flat-pickr id="posted_at" v-model="form.posted_at" class="form-input" :config="basic"></flat-pickr>
                            </div>
                        </div>
                        <div class="grid grid-cols-1 gap-4 md:grid-cols-4 gap-2">
                            <div :class="{ 'has-error': $validate.form.theme.$error, 'has-success': isSubmitted && !$validate.form.theme.$error }">
                                <label for="theme">Tema</label>
                                <multiselect id="theme"
                                    v-model="form.theme"
                                    :options="themes?.results"
                                    class="custom-multiselect"
                                    :searchable="true"
                                    placeholder="Pilih tema konten"
                                    selected-label=""
                                    select-label=""
                                    deselect-label=""
                                    label="label"
                                    track-by="value"
                                ></multiselect>
                                <template v-if="isSubmitted && $validate.form.theme.$error">
                                    <p class="text-danger mt-1">Tema konten harus diisi</p>
                                </template>
                            </div>
                            <div :class="{ 'has-error': $validate.form.topic.$error, 'has-success': isSubmitted && !$validate.form.topic.$error }">
                                <label for="topic">Topik</label>
                                <multiselect v-if="topics" id="topic"
                                    v-model="form.topic"
                                    :options="topics?.results"
                                    class="custom-multiselect"
                                    :searchable="true"
                                    placeholder="Pilih topik konten"
                                    selected-label=""
                                    select-label=""
                                    deselect-label=""
                                    label="label"
                                    track-by="value"
                                ></multiselect>
                                <template v-if="isSubmitted && $validate.form.topic.$error">
                                    <p class="text-danger mt-1">Topik konten harus diisi</p>
                                </template>
                            </div>
                            <div :class="{ 'has-error': $validate.form.format.$error, 'has-success': isSubmitted && !$validate.form.format.$error }">
                                <label for="format">Format</label>
                                <multiselect id="format"
                                    v-model="form.format"
                                    :options="formats?.results"
                                    class="custom-multiselect"
                                    :searchable="true"
                                    placeholder="Pilih format konten"
                                    selected-label=""
                                    select-label=""
                                    deselect-label=""
                                    label="label"
                                    track-by="value"
                                ></multiselect>
                                <template v-if="isSubmitted && $validate.form.format.$error">
                                    <p class="text-danger mt-1">Format konten harus diisi</p>
                                </template>
                            </div>
                            <div :class="{ 'has-error': $validate.form.type.$error, 'has-success': isSubmitted && !$validate.form.type.$error }">
                                <label for="type">Jenis Konten</label>
                                <multiselect id="theme"
                                    v-model="form.type"
                                    :options="types?.results"
                                    class="custom-multiselect"
                                    :searchable="true"
                                    placeholder="Pilih jenis konten"
                                    selected-label=""
                                    select-label=""
                                    deselect-label=""
                                    label="label"
                                    track-by="value"
                                ></multiselect>
                                <template v-if="isSubmitted && $validate.form.type.$error">
                                    <p class="text-danger mt-1">Jenis konten harus diisi</p>
                                </template>
                            </div>
                        </div>
                        <div class="grid grid-cols-1 gap-4 md:grid-cols-1 gap-2">
                            <div :class="{ 'has-error': $validate.form.description.$error, 'has-success': isSubmitted && !$validate.form.description.$error }">
                                <label for="description">Deskripsi Singkat Konten</label>
                                <textarea id="description" rows="3" class="form-textarea" v-model="form.description"></textarea>
                                <template v-if="isSubmitted && $validate.form.description.$error">
                                    <p class="text-danger mt-1">Deskripsi konten harus diisi</p>
                                </template>
                            </div>
                        </div>
                        <div class="grid grid-cols-1 gap-4 md:grid-cols-1 gap-2">
                            <div :class="{ 'has-error': $validate.form.content.$error, 'has-success': isSubmitted && !$validate.form.content.$error }">
                                <label for="content">Detail Konten</label>
                                <div style="min-height: 300px">
                                    <quillEditor v-if="form.content" id="content" ref="content" v-model:value="form.content" :options="quilloptions" style="min-height: 200px; height: 100%;" contentType="html"></quillEditor>
                                </div>
                                <template v-if="isSubmitted && $validate.form.content.$error">
                                    <p class="text-danger mt-1">Detail konten harus diisi</p>
                                </template>
                            </div>
                        </div>
                        <div class="grid grid-cols-1 gap-4 md:grid-cols-2 gap-2">
                            <div>
                                <label for="data">Data Konten (ditulis dalam format JSON)</label>
                                <textarea id="data" rows="3" class="form-textarea" v-model="form.data"></textarea>
                            </div>
                            <div>
                                <label for="grade">Kelas</label>
                                <div class="grid grid-cols-1 gap-4 md:grid-cols-3 gap-2">
                                    <label class="inline-flex cursor-pointer" v-for="n in 6" :key="n">
                                        <input type="checkbox" class="form-checkbox" v-model="form.grades" :value="n"/>
                                        <span class="text-white-dark">Kelas {{ n }}</span>
                                    </label>
                                </div>
                            </div>
                        </div>
                        <div class="grid grid-cols-1 gap-4 md:grid-cols-4 gap-2">
                            <div :class="{ 'has-error': $validate.form.point.$error, 'has-success': isSubmitted && !$validate.form.point.$error }">
                                <label for="point">Poin</label>
                                <input id="point" type="number" class="form-input" v-model="form.point" />
                                <template v-if="isSubmitted && $validate.form.point.$error">
                                    <p class="text-danger mt-1">Poin konten harus diisi dan lebih dari 0</p>
                                </template>
                            </div>
                            <div :class="{ 'has-error': $validate.form.coin.$error, 'has-success': isSubmitted && !$validate.form.coin.$error }">
                                <label for="coin">Koin</label>
                                <input id="coin" type="number" class="form-input" v-model="form.coin" />
                                <template v-if="isSubmitted && $validate.form.coin.$error">
                                    <p class="text-danger mt-1">Koin konten harus diisi dan lebih dari 0</p>
                                </template>
                            </div>
                            <div>
                                <label for="color">Warna Latar Belakang</label>
                                <input id="color" class="form-input" v-model="form.color" />
                            </div>
                        </div>
                        <div class="grid grid-cols-1 gap-4 md:grid-cols-2 gap-2 ">
                            <div class="custom-file-container" data-upload-id="featuredImage"
                                :class="{ 'has-error': $validate.form.featured_image.$error, 'has-success': isSubmitted && !$validate.form.featured_image.$error }">
                                <div class="label-container">
                                    <label for="featured_image">Gambar </label> <a href="javascript:;" class="custom-file-container__image-clear" title="Clear Image">×</a>
                                </div>
                                <label class="custom-file-container__custom-file" >
                                    <input id="featured_image" type="file" class="custom-file-container__custom-file__custom-file-input" 
                                        accept="image/png" @change="handleImageChange" />
                                    <input type="hidden" name="MAX_FILE_SIZE" value="10485760" />
                                    <span class="custom-file-container__custom-file__custom-file-control ltr:pr-20 rtl:pl-20"></span>
                                </label>
                                <template v-if="isSubmitted && $validate.form.featured_image.$error">
                                    <p class="text-danger mt-1">Gambar tema konten harus diisi</p>
                                </template>
                                <div class="custom-file-container__image-preview"></div>
                            </div>
                        </div>
                        <div class="flex items-center ltr:ml-auto mt-8">
                            <button type="submit" class="btn btn-success !py-1" :disabled="isLoading"><icon-save class="me-1" /> {{ isLoading ? 'Menyimpan...' : 'Simpan' }}</button>
                            <button type="button" class="btn btn-dark !py-1 ml-1" @click="resetForm"><icon-restore class="me-1" />Reset</button>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</template>

<script lang="ts" setup>
    import { useVuelidate } from '@vuelidate/core';
    import { helpers, integer, minValue,required, requiredIf } from '@vuelidate/validators';
    import Multiselect from '@suadelabs/vue3-multiselect';
    import '@suadelabs/vue3-multiselect/dist/vue3-multiselect.css';
    import '@/assets/css/file-upload-preview.css';
    import 'flatpickr/dist/flatpickr.css';
    import flatPickr from 'vue-flatpickr-component';
    import 'vue3-quill/lib/vue3-quill.css';

    useHead({ title: 'Edit Konten' });

    const imageType = helpers.withMessage('Format gambar harus PNG atau JPG', (value) => {
        if (!value) return true;
        if (typeof value === 'string') return true;
        return ['image/png', 'image/jpeg', 'image/jpg'].includes(value.type);
    });
    const maxFileSize = helpers.withMessage('Ukuran gambar tidak boleh lebih dari 1MB', (value) => {
        if (!value) return true;
        if (typeof value === 'string') return true;
        return value.size <= 1048576; // 1MB dalam byte
    });

    const isSubmitted = ref(false);
    const rules = {
        form: {
            title: { required },
            slug: { required },
            theme: { required },
            topic: { required },
            format: { required },
            description: { required },
            content: { required },
            grades: { required },
            point: { required, integer, minValue: minValue(0) },
            coin: { required, integer, minValue: minValue(0) },
            featured_image: { imageType, maxFileSize },
            status: { required },
            type: { required },
            posted_at: {
                required: requiredIf(() => form.value.status?.value === 'published'),
            },
        }
    };
    const router = useRouter();
    const route = useRoute();
    const config = useRuntimeConfig();
    const { $api } = useNuxtApp();

    const quilloptions = ref({});

    const basic: any = ref({
        dateFormat: 'Y-m-d',
        position: 'auto left',
        minDate: "today",
    });
    
    const { data: form, refresh} = await useAsyncData('content-get', 
        async () => {
            const content = await $api(`/content/contents/${route.params.id}/`, {});

            return {
                ...content,
                data: JSON.stringify(content.data),
            };
    });

    const $validate = useVuelidate(rules, { form });

    const { data: formats } = await useAsyncData('formats', 
        () => $api(`/content/formats/`)
    );

    const { data: themes } = await useAsyncData('themes', 
        () => $api(`/content/themes/`)
    );

    // const { data: topics, refresh: refreshTopics } = await useAsyncData('topics', 
    //     () => $fetch(`${config.public.apiBase}/content/topics/${form.value.theme?.value}/`), {
    //         watch: [() => form.value.theme?.value],
    //     }
    // );

    const { data: types } = await useAsyncData('types', 
        () => $api(`/content/types/`)
    );

    const { data: statuses } = await useAsyncData('statuses', 
        () => $api(`/content/statuses/`)
    );

    const topics = ref({ results: [] });
    const fetchTopics = async () => {
        if (!form.value.theme?.value) return;
        try {
            const res = await $api(`/content/topics/${form.value.theme.value}/`);
            topics.value = res;

            // mapping kembali topik jika perlu
            if (typeof form.value.topic === 'string') {
                form.value.topic = res.results.find(t => t.value === form.value.topic) ?? null;
            }
        } catch (error) {
            console.error('Gagal mengambil topik:', error);
        }
    };


    watchEffect(() => {
        if (form.value && formats.value?.results?.length && typeof form.value.format === 'string') {
            form.value.format = formats.value.results.find(f => f.value === form.value.format) ?? null;
        }

        if (form.value && themes.value?.results?.length && typeof form.value.theme === 'string') {
            form.value.theme = themes.value.results.find(t => t.value === form.value.theme) ?? null;
        }

        if (form.value && topics.value?.results?.length && typeof form.value.topic === 'string') {
            form.value.topic = topics.value.results.find(t => t.value === form.value.topic) ?? null;
        }

        if (form.value && types.value?.results?.length && typeof form.value.type === 'string') {
            form.value.type = types.value.results.find(t => t.value === form.value.type) ?? null;
        }

        if (form.value && statuses.value?.results?.length && typeof form.value.status === 'string') {
            form.value.status = statuses.value.results.find(s => s.value === form.value.status) ?? null;
        }
    });

    watchEffect(async () => {
        if (!form.value.theme || typeof form.value.theme === 'string') {
            if (themes.value?.results?.length && typeof form.value.theme === 'string') {
                form.value.theme = themes.value.results.find(t => t.value === form.value.theme) ?? null;
            }
        }

        if (form.value.theme?.value) {
            await fetchTopics();
        }
    });

    const isLoading = ref(false);

    const featuredImageUploader = ref(null);

    onMounted(async () => {
        const fileupload = await import('file-upload-with-preview');
        let FileUploadWithPreview = fileupload.default;

        featuredImageUploader.value = new FileUploadWithPreview('featuredImage', {
            images: {
                baseImage: form.value.featured_image ? form.value.featured_image : '/assets/images/file-preview.svg',
                backgroundImage: '',
            },
        });

        if (!form.value.status && statuses?.value?.results?.length) {
            form.value.status = statuses.value.results.find(s => s.value === 'draft');
        }
        if (!form.value.type && types?.value?.results?.length) {
            form.value.type = types.value.results.find(t => t.value === 'content');
        }
    });
    
    const submitForm = async () => {
        isSubmitted.value = true;
        $validate.value.form.$touch();
        if ($validate.value.form.$invalid) {
            return false;
        }

        const formData = new FormData();

        formData.append('title', form.value.title);
        formData.append('slug', form.value.slug);
        formData.append('format', form.value.format.value);
        formData.append('topic', form.value.topic.value);
        formData.append('theme', form.value.theme.value);
        formData.append('description', form.value.description);
        formData.append('content', form.value.content);
        formData.append('data', JSON.stringify(form.value.data));
        formData.append('grades', JSON.stringify(form.value.grades));
        formData.append('point', form.value.point);
        formData.append('coin', form.value.coin);
        formData.append('color', form.value.color);

        formData.append('type', form.value.type.value);
        formData.append('status', form.value.status.value);
        if (form.value.status?.value === 'published' && form.value.posted_at) {
            formData.append('posted_at', form.value.posted_at);
        }
        if (form.value.status?.value === 'archived') {
            const today = new Date().toISOString().slice(0, 10);
            formData.append('archived_at',  today);
        }

        if (form.value.featured_image && typeof form.value.featured_image !== 'string') {
            formData.append('featured_image', form.value.featured_image);
        }

        isLoading.value = true;
        await $api(`/content/contents/${route.params.id}/`, {
            method: 'PUT',
            body: formData
        }).then(() => {
            router.push({ path: "/content/contents/list" });
        })
        .catch((error) => {
            console.log(error);
        })
        .finally(() => {
            isLoading.value = false;
        });
    }

    function handleImageChange(event: { target: { files: any[]; }; }) {
        const file = event.target.files[0];

        if (!file) return;

        const allowed = ['image/png', 'image/jpeg', 'image/jpg'];
        if (!allowed.includes(file.type)) {
            alert('Hanya PNG atau JPG yang diizinkan');
            return;
        }

        form.value.featured_image = file;
    }

    const resetForm = () => {
        refresh();

        if (!form.value.status && statuses?.value?.results?.length) {
            form.value.status = statuses.value.results.find(s => s.value === 'draft');
        }
        if (!form.value.type && types?.value?.results?.length) {
            form.value.type = types.value.results.find(t => t.value === 'content');
        }

        isSubmitted.value = false;
        $validate.value.form.$reset();

        featuredImageUploader?.value?.clearPreviewPanel();
        
    }
</script>