import { useApi } from '@/composables/useApi'
import { bumpMediaRevision } from '@/lib/mediaRevision'

export interface PurgeSettings {
	auto_purge_enabled: boolean
	auto_purge_interval_days: number
	last_purge_at: string | null
	last_purge_merged: number
	last_purge_articles_updated: number
	enabled_at: string | null
	next_purge_at: string | null
}

export type PurgeSettingsPatch =
	| { auto_purge_enabled: boolean }
	| { auto_purge_interval_days: number }

export interface PurgePreviewGroup {
	keep_id: number
	filename: string
	url: string
	used_in: number
	merged: number
}

export interface PurgePreview {
	groups: number
	copies: number
	articles: number
	list: PurgePreviewGroup[]
	more: number
	fingerprint: string
}

export interface PurgeResult {
	groups_total: number
	groups_purged: number
	merged: number
	articles_updated: number
	failed_groups: number
}

const SETTINGS_PATH = '/v1/media/purge-settings'
const PREVIEW_PATH = '/v1/media/purge-preview'
const PURGE_PATH = '/v1/media/purge'
const JSON_HEADERS = { 'Content-Type': 'application/json' }

export function useMediaPurge() {
	const { request } = useApi()

	function getSettings() {
		return request<PurgeSettings>(SETTINGS_PATH)
	}

	function updateSettings(patch: PurgeSettingsPatch) {
		return request<PurgeSettings>(SETTINGS_PATH, {
			method: 'PATCH',
			headers: JSON_HEADERS,
			body: JSON.stringify(patch),
		})
	}

	function getPreview() {
		return request<PurgePreview>(PREVIEW_PATH)
	}

	async function purge(fingerprint: string) {
		const result = await request<PurgeResult>(PURGE_PATH, {
			method: 'POST',
			headers: JSON_HEADERS,
			body: JSON.stringify({ fingerprint }),
		})
		bumpMediaRevision()
		return result
	}

	return { getSettings, updateSettings, getPreview, purge }
}