<?php

require_once __DIR__."/../util/mysql_connect.php";
require_once __DIR__."/RiotRequest.php";

class Tracker {
	private MySQLConnection $conn;

	/**
	 * @var Account[]
	 */
	public array $accounts;

	/**
	 * @var Elo[][]
	 */
	public array $entries;

	/**
	 * @var Elo[][]
	 */
	public array $entriesByDateString;

	public function __construct() {
		$this->conn = new MySQLConnection();
		$this->readAccounts();
		$this->readEntries();
	}

	private function readAccounts(): void {
		$accounts = [];

		$sql = $this->conn->query("SELECT * FROM `accounts`");
		while ($row = $sql->fetch_assoc()) {
			$account = new Account();
			$account->puuid = $row["puuid"];
			$account->gameName = $row["gameName"];
			$account->tagLine = $row["tagLine"];
			$account->profileIconId = $row["profileIconId"];

			$accounts[$account->puuid] = $account;
		}

		$this->accounts = $accounts;
	}
	private function readEntries(): void {
		$sql = $this->conn->query("
			SELECT accounts.puuid AS puuid, date, tier, `rank`, points
			FROM accounts LEFT JOIN elo_entries ON id = accountId
			ORDER BY accounts.puuid, date
		");

		$this->entries = [];
		$this->entriesByDateString = [];

		while ($row = $sql->fetch_assoc()) {
			$puuid = $row["puuid"];

			if (!isset($this->entries[$puuid]))
				$this->entries[$puuid] = [];

			if (!isset($this->entriesByDateString[$puuid]))
				$this->entriesByDateString[$puuid] = [];

			if ($dateString = $row["date"]){
				$elo = new Elo();
				$elo->tier = $row["tier"];
				$elo->rank = $row["rank"];
				$elo->points = $row["points"];

				$datetime = new DateTime($dateString);
				$this->entries[$puuid][$datetime->getTimestamp()] = $elo;
				$this->entriesByDateString[$puuid][$dateString] = $elo;
			}

		}
	}

	/**
	 * @return int[]
	 */
	public function getProgressions(): array {
		$progressions = [];

		foreach ($this->entries as $puuid => $eloEntries) {
			if (sizeof($eloEntries) > 0){
				$start = reset($eloEntries);
				$end = end($eloEntries);
				$progress = $end->value() - $start->value();
			} else {
				$progress = 0;
			}
			$progressions[$puuid] = $progress;
		}

		arsort($progressions);

		return $progressions;
	}

	public function update(callable $progressCallback): void {

		$counter = 0;
		foreach ($this->accounts as $puuid => $account) {
			$account->update($this->entries[$puuid]);
			$counter++;
			$progressCallback($counter / sizeof($this->accounts));
		}

	}

	public function add($gameName, $tagLine, &$message): bool {
		$request = new RiotRequest("riot/account/v1/accounts/by-riot-id/$gameName/$tagLine");
		$request->useRouting();
		$result = $request->run();

		if ($request->responseCode === 200){
			if (!key_exists($result->puuid, $this->accounts)){
				$account = new Account();
				$account->puuid = $result->puuid;
				$account->gameName = $result->gameName;
				$account->tagLine = $result->tagLine;
				$this->accounts[$account->puuid] = $account;
				$this->entries[$account->puuid] = [];

				$this->conn->prepare("
					INSERT INTO `accounts` 
					(`puuid`, `gameName`, `tagLine`)
					VALUES (?, ?, ?)
				")->execute([$account->puuid, $account->gameName, $account->tagLine]);

				$message = "Success.";

				$account->update($this->entries[$account->puuid]);

				return true;
			} else {
				$message = "Riot ID already added.";
			}
		} else {
			$message = "Riot ID not found.";
		}

		return false;
	}
	public function remove($gameName, $tagLine, &$message): bool {
		$request = new RiotRequest("riot/account/v1/accounts/by-riot-id/$gameName/$tagLine");
		$request->useRouting();
		$result = $request->run();

		if ($request->responseCode === 200){
			if (key_exists($result->puuid, $this->accounts)){
				unset($this->accounts[$result->puuid]);
				unset($this->entries[$result->puuid]);

				$this->conn->query("
					DELETE FROM `accounts`
					WHERE puuid = '$result->puuid';
				");

				$message = "Success.";
				return true;
			} else {
				$message = "Riot ID was not added.";
			}
		} else {
			$message = "Riot ID not found.";
		}

		return false;
	}
}

class Account {
	public string $puuid;
	public string $gameName;
	public string $tagLine;
	public int $profileIconId = 0;

	/**
	 * @param Elo[] $eloEntries
	 */
	public function update(array &$eloEntries): void {
		$summoner = (new RiotRequest("lol/summoner/v4/summoners/by-puuid/$this->puuid"))->run($isEUNE);
		$this->profileIconId = $summoner->profileIconId;

		$this->updateRiotIDAndProfileIcon();
		$this->tryAddNewEloEntry($eloEntries, $summoner->id, $isEUNE);
	}

	/**
	 * @param Elo[] $eloEntries
	 */
	private function tryAddNewEloEntry(array &$eloEntries, string $summonerId, bool $isEUNE): void {
		$fetchedLeagues = (new RiotRequest("lol/league/v4/entries/by-summoner/$summonerId", $isEUNE))->run();

		$currentElo = end($eloEntries);

		foreach ($fetchedLeagues as $fetchedElo) {
			if ($fetchedElo->queueType === "RANKED_SOLO_5x5" && ($fetchedElo->wins + $fetchedElo->losses >= 5)) {
				if (!$currentElo ||
					$currentElo->tier !== $fetchedElo->tier ||
					$currentElo->rank !== $fetchedElo->rank ||
					$currentElo->points !== $fetchedElo->leaguePoints){

					$currentElo = new Elo();
					$currentElo->tier = $fetchedElo->tier;
					$currentElo->rank = $fetchedElo->rank;
					$currentElo->points = $fetchedElo->leaguePoints;

					$date = (new DateTime("now"))->format("Y-m-d H:i:s");
					$eloEntries[$date] = $currentElo;

					$conn = new MySQLConnection();

					$sqlAccountId = $conn->query("
						SELECT id 
						FROM `accounts` 
						WHERE puuid = '$this->puuid'
					")->fetch_assoc()["id"];

					$conn->prepare("
						INSERT INTO `elo_entries`
						(accountId, date, tier, `rank`, points)
						VALUES (?, ?, ?, ?, ?)
					")->execute([
						$sqlAccountId, $date, $currentElo->tier, $currentElo->rank, $currentElo->points
					]);
				}
			}
		}
	}
	private function updateRiotIDAndProfileIcon(): void {
		$request = new RiotRequest("riot/account/v1/accounts/by-puuid/$this->puuid");
		$request->useRouting();
		$fetchedAccount = $request->run();

		$this->gameName = $fetchedAccount->gameName;
		$this->tagLine = $fetchedAccount->tagLine;

		$conn = new MySQLConnection();
		$conn->prepare("
			UPDATE `accounts`
			SET `gameName` = ?, `tagLine` = ?, `profileIconId` = $this->profileIconId
			WHERE `puuid` = ?
		")->execute([$this->gameName, $this->tagLine, $this->puuid]);
	}
}

class Elo {
	public string $tier;
	public string $rank;
	public int $points;
	public function value() : int {
		$tiers = [
			"CHALLENGER" => 2800,
			"GRANDMASTER" => 2800,
			"MASTER" => 2800,
			"DIAMOND" => 2400,
			"EMERALD" => 2000,
			"PLATINUM" => 1600,
			"GOLD" => 1200,
			"SILVER" => 800,
			"BRONZE" => 400,
			"IRON" => 0,
		];

		$ranks = [
			"I" => 300,
			"II" => 200,
			"III" => 100,
			"IV" => 0,
		];

		$tier = $this->tier;

		if ($tier === "MASTER" || $tier === "GRANDMASTER" || $tier === "CHALLENGER")
			return $tiers[$tier] + $this->points;

		return $tiers[$tier] + $ranks[$this->rank] + $this->points;
	}
}