<template>
    <DocSectionText v-bind="$attrs">
        <p>Uploader UI can be customized with templating.</p>
    </DocSectionText>
    <div class="card">
        <FileUpload name="demo[]" url="./upload.php" @upload="onTemplatedUpload($event)" :multiple="true" accept="image/*" :maxFileSize="1000000" @select="onSelectedFiles">
            <template #header="{ chooseCallback, uploadCallback, clearCallback, files }">
                <div class="flex flex-wrap justify-content-between align-items-center flex-1 gap-2">
                    <div class="flex gap-2">
                        <Button @click="chooseCallback()" icon="pi pi-images" class="p-button-rounded"></Button>
                        <Button @click="uploadEvent(uploadCallback)" icon="pi pi-cloud-upload" class="p-button-rounded p-button-success" :disabled="!files || files.length === 0"></Button>
                        <Button @click="clearCallback()" icon="pi pi-times" class="p-button-rounded p-button-danger" :disabled="!files || files.length === 0"></Button>
                    </div>
                    <ProgressBar :value="totalSizePercent" :showValue="false" :class="['md:w-20rem h-1rem w-full md:ml-auto', { 'exceeded-progress-bar': totalSizePercent > 100 }]">
                        <span class="white-space-nowrap">{{ totalSize }}B / 1Mb</span>
                    </ProgressBar>
                </div>
            </template>
            <template #content="{ files, uploadedFiles, removeUploadedFileCallback, removeFileCallback }">
                <div v-if="files.length > 0">
                    <h5>Pending</h5>
                    <div class="flex flex-wrap p-0 sm:p-5 gap-5">
                        <div v-for="(file, index) of files" :key="file.name + file.type + file.size" class="card m-0 px-6 flex flex-column border-1 surface-border align-items-center gap-3">
                            <div>
                                <img role="presentation" :alt="file.name" :src="file.objectURL" width="100" height="50" class="shadow-2" />
                            </div>
                            <span class="font-semibold">{{ file.name }}</span>
                            <div>{{ formatSize(file.size) }}</div>
                            <Badge value="Pending" severity="warning" />
                            <Button icon="pi pi-times" @click="onRemoveTemplatingFile(file, removeFileCallback, index)" class="p-button-outlined p-button-danger p-button-rounded" />
                        </div>
                    </div>
                </div>

                <div v-if="uploadedFiles.length > 0">
                    <h5>Completed</h5>
                    <div class="flex flex-wrap p-0 sm:p-5 gap-5">
                        <div v-for="(file, index) of uploadedFiles" :key="file.name + file.type + file.size" class="card m-0 px-6 flex flex-column border-1 surface-border align-items-center gap-3">
                            <div>
                                <img role="presentation" :alt="file.name" :src="file.objectURL" width="100" height="50" class="shadow-2" />
                            </div>
                            <span class="font-semibold">{{ file.name }}</span>
                            <div>{{ formatSize(file.size) }}</div>
                            <Badge value="Completed" class="mt-3" severity="success" />
                            <Button icon="pi pi-times" @click="removeUploadedFileCallback(index)" class="p-button-outlined p-button-danger p-button-rounded" />
                        </div>
                    </div>
                </div>
            </template>
            <template #empty>
                <div class="flex align-items-center justify-content-center flex-column">
                    <i class="pi pi-cloud-upload border-2 border-circle p-5 text-8xl text-400 border-400" />
                    <p class="mt-4 mb-0">Drag and drop files to here to upload.</p>
                </div>
            </template>
        </FileUpload>
    </div>
    <DocSectionCode :code="code" />
</template>

<script>
export default {
    data() {
        return {
            files: [],
            totalSize: 0,
            totalSizePercent: 0,
            code: {
                basic: `
<FileUpload name="demo[]" url="./upload.php" @upload="onTemplatedUpload($event)" :multiple="true" accept="image/*" :maxFileSize="1000000" @select="onSelectedFiles">
    <template #header="{ chooseCallback, uploadCallback, clearCallback, files }">
        <div class="flex flex-wrap justify-content-between align-items-center flex-1 gap-2">
            <div class="flex gap-2">
                <Button @click="chooseCallback()" icon="pi pi-images" class="p-button-rounded"></Button>
                <Button @click="uploadEvent(uploadCallback)" icon="pi pi-cloud-upload" class="p-button-rounded p-button-success" :disabled="!files || files.length === 0"></Button>
                <Button @click="clearCallback()" icon="pi pi-times" class="p-button-rounded p-button-danger" :disabled="!files || files.length === 0"></Button>
            </div>
            <ProgressBar :value="totalSizePercent" :showValue="false" :class="['md:w-20rem h-1rem w-full md:ml-auto', { 'exceeded-progress-bar': totalSizePercent > 100 }]"
                ><span class="white-space-nowrap">{{ totalSize }}B / 1Mb</span></ProgressBar
            >
        </div>
    </template>
    <template #content="{ files, uploadedFiles, removeUploadedFileCallback, removeFileCallback }">
        <div v-if="files.length > 0">
            <h5>Pending</h5>
            <div class="flex flex-wrap p-0 sm:p-5 gap-5">
                <div v-for="(file, index) of files" :key="file.name + file.type + file.size" class="card m-0 px-6 flex flex-column border-1 surface-border align-items-center gap-3">
                    <div>
                        <img role="presentation" :alt="file.name" :src="file.objectURL" width="100" height="50" class="shadow-2" />
                    </div>
                    <span class="font-semibold">{{ file.name }}</span>
                    <div>{{ formatSize(file.size) }}</div>
                    <Badge value="Pending" severity="warning" />
                    <Button icon="pi pi-times" @click="onRemoveTemplatingFile(file, removeFileCallback, index)" class="p-button-outlined p-button-danger p-button-rounded" />
                </div>
            </div>
        </div>

        <div v-if="uploadedFiles.length > 0">
            <h5>Completed</h5>
            <div class="flex flex-wrap p-0 sm:p-5 gap-5">
                <div v-for="(file, index) of uploadedFiles" :key="file.name + file.type + file.size" class="card m-0 px-6 flex flex-column border-1 surface-border align-items-center gap-3">
                    <div>
                        <img role="presentation" :alt="file.name" :src="file.objectURL" width="100" height="50" class="shadow-2" />
                    </div>
                    <span class="font-semibold">{{ file.name }}</span>
                    <div>{{ formatSize(file.size) }}</div>
                    <Badge value="Completed" class="mt-3" severity="success" />
                    <Button icon="pi pi-times" @click="removeUploadedFileCallback(index)" class="p-button-outlined p-button-danger p-button-rounded" />
                </div>
            </div>
        </div>
    </template>
    <template #empty>
        <div class="flex align-items-center justify-content-center flex-column">
            <i class="pi pi-cloud-upload border-2 border-circle p-5 text-8xl text-400 border-400" />
            <p class="mt-4 mb-0">Drag and drop files to here to upload.</p>
        </div>
    </template>
</FileUpload>`,
                options: `
<template>
    <div class="card">
        <Toast />
        <FileUpload name="demo[]" url="./upload.php" @upload="onTemplatedUpload($event)" :multiple="true" accept="image/*" :maxFileSize="1000000" @select="onSelectedFiles">
            <template #header="{ chooseCallback, uploadCallback, clearCallback, files }">
                <div class="flex flex-wrap justify-content-between align-items-center flex-1 gap-2">
                    <div class="flex gap-2">
                        <Button @click="chooseCallback()" icon="pi pi-images" class="p-button-rounded"></Button>
                        <Button @click="uploadEvent(uploadCallback)" icon="pi pi-cloud-upload" class="p-button-rounded p-button-success" :disabled="!files || files.length === 0"></Button>
                        <Button @click="clearCallback()" icon="pi pi-times" class="p-button-rounded p-button-danger" :disabled="!files || files.length === 0"></Button>
                    </div>
                    <ProgressBar :value="totalSizePercent" :showValue="false" :class="['md:w-20rem h-1rem w-full md:ml-auto', { 'exceeded-progress-bar': totalSizePercent > 100 }]"
                        ><span class="white-space-nowrap">{{ totalSize }}B / 1Mb</span></ProgressBar
                    >
                </div>
            </template>
            <template #content="{ files, uploadedFiles, removeUploadedFileCallback, removeFileCallback }">
                <div v-if="files.length > 0">
                    <h5>Pending</h5>
                    <div class="flex flex-wrap p-0 sm:p-5 gap-5">
                        <div v-for="(file, index) of files" :key="file.name + file.type + file.size" class="card m-0 px-6 flex flex-column border-1 surface-border align-items-center gap-3">
                            <div>
                                <img role="presentation" :alt="file.name" :src="file.objectURL" width="100" height="50" class="shadow-2" />
                            </div>
                            <span class="font-semibold">{{ file.name }}</span>
                            <div>{{ formatSize(file.size) }}</div>
                            <Badge value="Pending" severity="warning" />
                            <Button icon="pi pi-times" @click="onRemoveTemplatingFile(file, removeFileCallback, index)" class="p-button-outlined p-button-danger p-button-rounded" />
                        </div>
                    </div>
                </div>

                <div v-if="uploadedFiles.length > 0">
                    <h5>Completed</h5>
                    <div class="flex flex-wrap p-0 sm:p-5 gap-5">
                        <div v-for="(file, index) of uploadedFiles" :key="file.name + file.type + file.size" class="card m-0 px-6 flex flex-column border-1 surface-border align-items-center gap-3">
                            <div>
                                <img role="presentation" :alt="file.name" :src="file.objectURL" width="100" height="50" class="shadow-2" />
                            </div>
                            <span class="font-semibold">{{ file.name }}</span>
                            <div>{{ formatSize(file.size) }}</div>
                            <Badge value="Completed" class="mt-3" severity="success" />
                            <Button icon="pi pi-times" @click="removeUploadedFileCallback(index)" class="p-button-outlined p-button-danger p-button-rounded" />
                        </div>
                    </div>
                </div>
            </template>
            <template #empty>
                <div class="flex align-items-center justify-content-center flex-column">
                    <i class="pi pi-cloud-upload border-2 border-circle p-5 text-8xl text-400 border-400" />
                    <p class="mt-4 mb-0">Drag and drop files to here to upload.</p>
                </div>
            </template>
        </FileUpload>
    </div>
</template>

<script>
export default {
    data() {
        return {
            files: [],
            totalSize: 0,
            totalSizePercent: 0,
        };
    },
    methods: {
        onRemoveTemplatingFile(file, removeFileCallback, index) {
            removeFileCallback(index);
            this.totalSize -= parseInt(this.formatSize(file.size));
            this.totalSizePercent = this.totalSize / 10;
        },
        onClearTemplatingUpload(clear) {
            clear();
            this.totalSize = 0;
            this.totalSizePercent = 0;
        },
        onSelectedFiles(event) {
            this.files = event.files;
            this.files.forEach((file) => {
                this.totalSize += parseInt(this.formatSize(file.size));
            });
        },
        uploadEvent(callback) {
            this.totalSizePercent = this.totalSize / 10;
            callback();
        },
        onTemplatedUpload() {
            this.$toast.add({ severity: 'info', summary: 'Success', detail: 'File Uploaded', life: 3000 });
        },
        formatSize(bytes) {
            if (bytes === 0) {
                return '0 B';
            }

            let k = 1000,
                dm = 3,
                sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],
                i = Math.floor(Math.log(bytes) / Math.log(k));

            return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
        }
    }
};
<\/script>`,
                composition: `
<template>
    <div class="card">
        <Toast />
        <FileUpload name="demo[]" url="./upload.php" @upload="onTemplatedUpload($event)" :multiple="true" accept="image/*" :maxFileSize="1000000" @select="onSelectedFiles">
            <template #header="{ chooseCallback, uploadCallback, clearCallback, files }">
                <div class="flex flex-wrap justify-content-between align-items-center flex-1 gap-2">
                    <div class="flex gap-2">
                        <Button @click="chooseCallback()" icon="pi pi-images" class="p-button-rounded"></Button>
                        <Button @click="uploadEvent(uploadCallback)" icon="pi pi-cloud-upload" class="p-button-rounded p-button-success" :disabled="!files || files.length === 0"></Button>
                        <Button @click="clearCallback()" icon="pi pi-times" class="p-button-rounded p-button-danger" :disabled="!files || files.length === 0"></Button>
                    </div>
                    <ProgressBar :value="totalSizePercent" :showValue="false" :class="['md:w-20rem h-1rem w-full md:ml-auto', { 'exceeded-progress-bar': totalSizePercent > 100 }]"
                        ><span class="white-space-nowrap">{{ totalSize }}B / 1Mb</span></ProgressBar
                    >
                </div>
            </template>
            <template #content="{ files, uploadedFiles, removeUploadedFileCallback, removeFileCallback }">
                <div v-if="files.length > 0">
                    <h5>Pending</h5>
                    <div class="flex flex-wrap p-0 sm:p-5 gap-5">
                        <div v-for="(file, index) of files" :key="file.name + file.type + file.size" class="card m-0 px-6 flex flex-column border-1 surface-border align-items-center gap-3">
                            <div>
                                <img role="presentation" :alt="file.name" :src="file.objectURL" width="100" height="50" class="shadow-2" />
                            </div>
                            <span class="font-semibold">{{ file.name }}</span>
                            <div>{{ formatSize(file.size) }}</div>
                            <Badge value="Pending" severity="warning" />
                            <Button icon="pi pi-times" @click="onRemoveTemplatingFile(file, removeFileCallback, index)" class="p-button-outlined p-button-danger p-button-rounded" />
                        </div>
                    </div>
                </div>

                <div v-if="uploadedFiles.length > 0">
                    <h5>Completed</h5>
                    <div class="flex flex-wrap p-0 sm:p-5 gap-5">
                        <div v-for="(file, index) of uploadedFiles" :key="file.name + file.type + file.size" class="card m-0 px-6 flex flex-column border-1 surface-border align-items-center gap-3">
                            <div>
                                <img role="presentation" :alt="file.name" :src="file.objectURL" width="100" height="50" class="shadow-2" />
                            </div>
                            <span class="font-semibold">{{ file.name }}</span>
                            <div>{{ formatSize(file.size) }}</div>
                            <Badge value="Completed" class="mt-3" severity="success" />
                            <Button icon="pi pi-times" @click="removeUploadedFileCallback(index)" class="p-button-outlined p-button-danger p-button-rounded" />
                        </div>
                    </div>
                </div>
            </template>
            <template #empty>
                <div class="flex align-items-center justify-content-center flex-column">
                    <i class="pi pi-cloud-upload border-2 border-circle p-5 text-8xl text-400 border-400" />
                    <p class="mt-4 mb-0">Drag and drop files to here to upload.</p>
                </div>
            </template>
        </FileUpload>
    </div>
</template>

<script setup>
import { useToast } from "primevue/usetoast";
const toast = useToast();

const totalSize = ref(0);
const totalSizePercent = ref(0);
const files = ref([]);

const onRemoveTemplatingFile = (file, removeFileCallback, index) => {
    removeFileCallback(index);
    totalSize.value -= parseInt(formatSize(file.size));
    totalSizePercent.value = totalSize.value / 10;
};

const onClearTemplatingUpload = (clear) => {
    clear();
    totalSize.value = 0;
    totalSizePercent.value = 0;
};

const onSelectedFiles = (event) => {
    files.value = event.files;
    files.value.forEach((file) => {
        totalSize.value += parseInt(formatSize(file.size));
    });
};

const uploadEvent = (callback) => {
    totalSizePercent.value = totalSize.value / 10;
    callback();
};

const onTemplatedUpload = () => {
    toast.add({ severity: "info", summary: "Success", detail: "File Uploaded", life: 3000 });
};

const formatSize = (bytes) => {
    if (bytes === 0) return "0 B";
    const k = 1024;
    const sizes = ["B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
    const i = Math.floor(Math.log(bytes) / Math.log(k));
    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + " " + sizes[i];
};
<\/script>`
            }
        };
    },
    methods: {
        onRemoveTemplatingFile(file, removeFileCallback, index) {
            removeFileCallback(index);
            this.totalSize -= parseInt(this.formatSize(file.size));
            this.totalSizePercent = this.totalSize / 10;
        },
        onClearTemplatingUpload(clear) {
            clear();
            this.totalSize = 0;
            this.totalSizePercent = 0;
        },
        onSelectedFiles(event) {
            this.files = event.files;
            this.files.forEach((file) => {
                this.totalSize += parseInt(this.formatSize(file.size));
            });
            this.totalSizePercent = this.totalSize / 10;
        },
        uploadEvent(callback) {
            callback();
        },
        onTemplatedUpload() {
            this.$toast.add({ severity: 'info', summary: 'Success', detail: 'File Uploaded', life: 3000 });
        },
        formatSize(bytes) {
            if (bytes === 0) {
                return '0 B';
            }

            let k = 1000,
                dm = 3,
                sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],
                i = Math.floor(Math.log(bytes) / Math.log(k));

            return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
        }
    }
};
</script>