<template>
	<NewModal
		ref="modal"
		:header="cf ? `Installing a CurseForge pack` : `Uploading .zip contents from URL`"
	>
		<form class="flex flex-col gap-4 md:w-[600px]" @submit.prevent="handleSubmit">
			<div class="flex flex-col gap-2">
				<div class="font-bold text-contrast">
					{{ cf ? `How to get the modpack version's URL` : 'URL of .zip file' }}
				</div>
				<ol v-if="cf" class="mb-1 mt-0 flex flex-col gap-1 pl-8 leading-normal text-secondary">
					<li>
						<a
							href="https://www.curseforge.com/minecraft/search?page=1&pageSize=40&sortBy=relevancy&class=modpacks"
							class="inline-flex font-semibold text-[#F16436] transition-all hover:underline active:brightness-[--hover-brightness]"
							target="_blank"
							rel="noopener noreferrer"
						>
							Find the CurseForge modpack
							<ExternalIcon class="ml-1 inline size-4" stroke-width="3" />
						</a>
						you'd like to install on your server.
					</li>
					<li>
						On the modpack's page, go to the
						<span class="font-semibold text-primary">"Files"</span> tab, and
						<span class="font-semibold text-primary">select the version</span> of the modpack you
						want to install.
					</li>
					<li>
						<span class="font-semibold text-primary">Copy the URL</span> of the version you want to
						install, and paste it in the box below.
					</li>
				</ol>
				<p v-else class="mb-1 mt-0">Copy and paste the direct download URL of a .zip file.</p>
				<input
					ref="urlInput"
					v-model="url"
					autofocus
					:disabled="submitted"
					type="text"
					data-1p-ignore
					data-lpignore="true"
					data-protonpass-ignore="true"
					required
					:placeholder="
						cf
							? 'https://www.curseforge.com/minecraft/modpacks/.../files/6412259'
							: 'https://www.example.com/.../modpack-name-1.0.2.zip'
					"
					autocomplete="off"
				/>
				<div v-if="submitted && error" class="text-red">{{ error }}</div>
			</div>
			<BackupWarning :backup-link="`/hosting/manage/${serverId}/backups`" />
			<div class="flex justify-start gap-2">
				<ButtonStyled color="brand">
					<button v-tooltip="error" :disabled="submitted || !!error" type="submit">
						<SpinnerIcon v-if="submitted" class="animate-spin" />
						<DownloadIcon v-else class="h-5 w-5" />
						{{ submitted ? 'Installing...' : 'Install' }}
					</button>
				</ButtonStyled>
				<ButtonStyled>
					<button type="button" @click="hide">
						<XIcon class="h-5 w-5" />
						{{ submitted ? 'Close' : 'Cancel' }}
					</button>
				</ButtonStyled>
			</div>
		</form>
	</NewModal>
</template>

<script setup lang="ts">
import { DownloadIcon, ExternalIcon, SpinnerIcon, XIcon } from '@modrinth/assets'
import {
	BackupWarning,
	ButtonStyled,
	injectModrinthClient,
	injectModrinthServerContext,
	injectNotificationManager,
	NewModal,
} from '@modrinth/ui'
import { ModrinthServersFetchError } from '@modrinth/utils'
import { computed, nextTick, ref } from 'vue'

import { handleServersError } from '~/composables/servers/modrinth-servers.ts'

const notifications = injectNotificationManager()
const client = injectModrinthClient()
const { serverId } = injectModrinthServerContext()

const cf = ref(false)

const modal = ref<typeof NewModal>()
const urlInput = ref<HTMLInputElement | null>(null)
const url = ref('')
const submitted = ref(false)

const trimmedUrl = computed(() => url.value.trim())

const regex = /https:\/\/(www\.)?curseforge\.com\/minecraft\/modpacks\/[^/]+\/files\/\d+/

const error = computed(() => {
	if (trimmedUrl.value.length === 0) {
		return 'URL is required.'
	}
	if (cf.value && !regex.test(trimmedUrl.value)) {
		return 'URL must be a CurseForge modpack version URL.'
	} else if (!cf.value && !trimmedUrl.value.includes('/')) {
		return 'URL must be valid.'
	}
	return ''
})

const handleSubmit = async () => {
	submitted.value = true
	if (!error.value) {
		// hide();
		try {
			const dry = await client.kyros.files_v0.extractFile(trimmedUrl.value, true, true)

			if (!cf.value || dry.modpack_name) {
				await client.kyros.files_v0.extractFile(trimmedUrl.value, true, false)
				hide()
			} else {
				submitted.value = false
				handleServersError(
					new ModrinthServersFetchError(
						'Could not find CurseForge modpack at that URL.',
						404,
						new Error(`No modpack found at ${url.value}`),
					),
					notifications,
				)
			}
		} catch (error) {
			submitted.value = false
			console.error('Error installing:', error)
			handleServersError(error, notifications)
		}
	}
}

const show = (isCf: boolean) => {
	cf.value = isCf
	url.value = ''
	submitted.value = false
	modal.value?.show()
	nextTick(() => {
		setTimeout(() => {
			urlInput.value?.focus()
		}, 100)
	})
}

const hide = () => {
	modal.value?.hide()
}

defineExpose({ show, hide })
</script>
