import utils from "../../assets/javascripts/utils.js"
import localise from "../../assets/javascripts/localise.js"

let config,
	options,
	divs = {}

for (const a of document.getElementById("links").getElementsByTagName("a")) {
	a.addEventListener("click", e => {
		const path = a.getAttribute("href").replace("#", "")
		loadPage(path)
		e.preventDefault()
	})
}

await new Promise(resolve => {
	fetch("/config.json").then(response => response.text())
		.then(data => {
			config = JSON.parse(data)
			resolve()
		})
})
await new Promise(resolve => {
	browser.storage.local.get("options", r => {
		options = r.options
		resolve()
	})
})

function changeFrontendsSettings(service) {
	for (const frontend in config.services[service].frontends) {
		if (config.services[service].frontends[frontend].instanceList) {
			const frontendDiv = document.getElementById(frontend)
			if (typeof divs[service].frontend !== "undefined") {
				if (frontend == divs[service].frontend.value) {
					frontendDiv.style.display = "block"
				} else {
					frontendDiv.style.display = "none"
				}
			}
		}
	}
}

function loadPage(path) {
	for (const section of document.getElementById("pages").getElementsByTagName("section")) section.style.display = "none"
	document.getElementById(`${path}_page`).style.display = "block"

	for (const a of document.getElementById("links").getElementsByTagName("a"))
		if (a.getAttribute("href") == `#${path}`) a.classList.add("selected")
		else a.classList.remove("selected")

	let stateObj = { id: "100" }
	window.history.pushState(stateObj, "Page 2", `/pages/options/index.html#${path}`)

	if (path != 'general' && path != 'about') {
		const service = path;

		divs[service] = {}
		for (const option in config.services[service].options) {
			divs[service][option] = document.getElementById(`${service}-${option}`)
			if (typeof config.services[service].options[option] == "boolean") divs[service][option].checked = options[service][option]
			else divs[service][option].value = options[service][option]

			divs[service][option].addEventListener("change", () => {
				browser.storage.local.get("options", r => {
					let options = r.options
					if (typeof config.services[service].options[option] == "boolean") options[service][option] = divs[service][option].checked
					else options[service][option] = divs[service][option].value
					browser.storage.local.set({ options })
					changeFrontendsSettings(service)
				})
			})
		}

		const frontend_name_element = document.getElementById(`${service}_page`).getElementsByClassName("frontend_name")[0]
		if (divs[service].frontend) {
			frontend_name_element.href = config.services[service].frontends[divs[service].frontend.value].url
		} else {
			frontend_name_element.href = Object.values(config.services[service].frontends)[0].url
		}

		if (Object.keys(config.services[service].frontends).length > 1) {
			changeFrontendsSettings(service)
		}

		for (const frontend in config.services[service].frontends) {
			if (config.services[service].frontends[frontend].instanceList) {
				processDefaultCustomInstances(frontend, config.networks, document)
			}
		}
	}
}

async function processDefaultCustomInstances(frontend, networks, document) {
	let customInstances = []
	let options
	await new Promise(async resolve =>
		browser.storage.local.get(["options"], r => {
			customInstances = r.options[frontend]
			options = r.options
			resolve()
		})
	)

	!async function () {
		const blacklist = utils.getBlacklist()
		const redirects = utils.getList()

		for (const network in networks) {
			if (redirects[frontend][network].length > 0) {
				document.getElementById(frontend).getElementsByClassName(network)[0].getElementsByClassName("checklist")[0].innerHTML = [
					`
				<div class="some-block option-block">
					<h4>${utils.camelCase(network)}</h4>
				</div>
				`,
					...redirects[frontend][network]
						.sort((a, b) =>
							(blacklist.cloudflare.includes(a) && !blacklist.cloudflare.includes(b))
							||
							(blacklist.authenticate.includes(a) && !blacklist.authenticate.includes(b))
						)
						.map(x => {
							const cloudflare = blacklist.cloudflare.includes(x) ? ' <span style="color:red;">cloudflare</span>' : ""
							const authenticate = blacklist.authenticate.includes(x) ? ' <span style="color:orange;">authenticate</span>' : ""

							let warnings = [cloudflare, authenticate].join(" ")
							return `
						<div>
							<x>
								<a href="${x}" target="_blank">${x}</a>${warnings}
							</x>
						  </div>`
						}),
					'<br>'
				].join("\n<hr>\n")
			}
		}
	}()

	localise.localisePage()

	function calcCustomInstances() {
		document.getElementById(frontend).getElementsByClassName("custom-checklist")[0].innerHTML = customInstances
			.map(
				x => `
				<div>
                	${x}
					<button class="add clear-${x}">
						<svg xmlns="https://www.w3.org/2000/svg" height="20px" viewBox="0 0 24 24" width="20px" fill="currentColor">
							<path d="M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41z" />
						</svg>
					</button>
              	</div>
              	<hr>`
			)
			.join("\n")

		for (const item of customInstances) {
			document.getElementById(frontend).getElementsByClassName(`clear-${item}`)[0].addEventListener("click", async () => {
				let index = customInstances.indexOf(item)
				if (index > -1) customInstances.splice(index, 1)
				options[frontend] = customInstances
				browser.storage.local.set({ options }, () => calcCustomInstances())
			})
		}
	}
	calcCustomInstances()
	document.getElementById(frontend).getElementsByClassName("custom-instance-form")[0].addEventListener("submit", async event => {
		event.preventDefault();
		event.preventDefault()
		let frontendCustomInstanceInput = document.getElementById(frontend).getElementsByClassName("custom-instance")[0]
		let url
		try {
			url = new URL(frontendCustomInstanceInput.value)
		} catch (error) {
			return
		}
		let protocolHostVar = utils.protocolHost(url)
		if (frontendCustomInstanceInput.validity.valid) {
			if (!customInstances.includes(protocolHostVar)) {
				customInstances.push(protocolHostVar)
				options[frontend] = customInstances
				browser.storage.local.set({ options }, () => {
					frontendCustomInstanceInput.value = ""
					calcCustomInstances()
				})
			}
		}
	})
}

const r = window.location.href.match(/#(.*)/)
if (r) loadPage(r[1])
else loadPage("general")