import { promises as fs } from 'fs'
import { landingPage } from './outputs/landingPage.js'
import { projectColors } from './outputs/projectColors.js'
import { gameVersions } from './outputs/gameVersions.js'
import { tags } from './outputs/tags.js'

const API_URL =
	process.env.VITE_API_URL && process.env.VITE_API_URL === 'https://staging-api.modrinth.com/v2/'
		? 'https://staging-api.modrinth.com/v2/'
		: 'https://api.modrinth.com/v2/'

// Time to live: 7 days
const TTL = 7 * 24 * 60 * 60 * 1000

/**
 * @typedef {Object} PluginResult
 * @property {string} name
 * @property {() => Promise<void>} buildStart
 */

/**
 * Generate JSON data from the backend
 * @param {Object} options Plugin options
 * @param {boolean} options.projectColors
 * @param {boolean} options.landingPage
 * @param {boolean} options.gameVersions
 * @param {boolean} options.tags
 * @returns {PluginResult}
 */
export default function Generator(options) {
	return {
		name: 'rollup-plugin-omorphia-generator',
		async buildStart() {
			let state = {}
			try {
				state = JSON.parse(await fs.readFile('./generated/state.json', 'utf8'))
			} catch {
				// File doesn't exist, create folder
				await fs.mkdir('./generated', { recursive: true })
			}

			// Don't generate if the last generation was less than TTL and the options are the same
			if (
				state?.lastGenerated &&
				new Date(state.lastGenerated).getTime() + TTL > new Date().getTime() &&
				JSON.stringify(state.options) === JSON.stringify(options)
			) {
				return
			}

			// Write new state
			state.lastGenerated = new Date().toISOString()
			state.options = options

			await fs.writeFile('./generated/state.json', JSON.stringify(state, null, 2))

			if (options.tags) await tags(API_URL)
			if (options.landingPage) await landingPage(API_URL)
			if (options.gameVersions) await gameVersions(API_URL)
			if (options.projectColors) await projectColors(API_URL)
		},
	}
}