<?php

require_once("Router/Router.php");
require_once("Router/Response.php");
require_once("Router/Route.php");
require_once("BancaDati/BancaDati.php");
require_once("User.php");

use Router\Response;
use Router\Router;
use Router\Route;
use BancaDati\BancaDati;

abstract class HTTP_STATUS_CODE {
    const OK = 200;
    const CREATED = 201;
    const BAD_REQUEST = 400;
    const FORBIDDEN = 403;
    const NOT_FOUNT = 404;
}


$app = new Router("/DirektiveDesDons");
$db = new BancaDati();


/*
 * Middleware
 */
$app->use("/", function (array &$req, Response $res) {
    if (isset($_COOKIE["TOKEN"])) {
        $user = new User();
        if ($user->loginWithToken($_COOKIE["TOKEN"])) {
            $req["user"] = $user;
        }
    }
});

/*
 * Home
 */
$app->get("/", function (array $req, Response $res) use ($db) {
    $res->json(["message" => "",
        "name" => "Shopping List",
        "authors" => "Simon Bock, Johannes Kantz & Malte Schulze Hobeling"]);
});

/*
 * User
 */
$app->get("/user", function (array $req, Response $res) {
    if (isset($req["user"])) {
        $res->json(["id" => $req["user"]->id, "username" => $req["user"]->username, "email" => $req["user"]->email]);
    } else {
        $res->json(["status" => HTTP_STATUS_CODE::FORBIDDEN, "message" => "You are not logged in. Goto '/login' to login"]);
    }
});
$app->get("/user/:id", function (array $req, Response $res) use ($db) {
    $db->select("utente", ["username" => $req["id"]]);
    $res->send("user " . $req["params"]["id"]);
});
$app->post("/signup", function (array $req, Response $res) use ($db) {
    $newUsername = $req["body"]["username"];
    $newPassword = $req["body"]["password"];
    $newEmail = $req["body"]["email"];
    $db->insert("utente", ["email" => "$newEmail", "parolaDordine" => "$newPassword", "nomeUtente" => "$newUsername"]);

    $res->send("Account Created", HTTP_STATUS_CODE::CREATED);
});

$app->post("/login", function (array $req, Response $res) use ($db) {
    $username = $req["body"]["username"];
    $password = $req["body"]["password"];

    $user = new User();
    $usertoken = $user->loginWithUsername($username, $password);

    if ($usertoken) {
        setcookie("TOKEN", $usertoken, time() + 3600); // 1h
        $res->json(["message" => "Login successful", "token" => $usertoken]);
    } else {
        $res->json(["message" => "Login failed"], HTTP_STATUS_CODE::FORBIDDEN);
    }
});

/*
 * Ingredients
 */
$app->route("/ingredient")
    ->get(function (array $req, Response $res) use ($db) {
        $res->json(["data" => $db->select("ingredienti")]);
    })
    ->post(function (array $req, Response $res) use ($db) {
        $name = $req["body"]["name"];
        $calories = $req["body"]["calories"];
        $quantity = $req["body"]["quantity"];
        $unit = $req["body"]["unit"];
        $price = $req["body"]["price"];

        $unitInTable = $db->select("folla", ["unita" => $unit]);
        if (count($unitInTable) > 1) {
            $res->json(["message" => "Unit: " . $unit . " does not exist. Please create unit first"], HTTP_STATUS_CODE::BAD_REQUEST);
            return;
        }
        $unitId = $unitInTable[0]["id"];

        $id = $db->insert("ingredienti", ["cognome" => "$name", "calorie" => "$calories", "quantita" => "$quantity", "follaID" => $unitId, "prezzo" => "$price"]);
        if (!$id) {
            $res->json(["message" => "Something went wrong when creating the Ingredient"], HTTP_STATUS_CODE::BAD_REQUEST);
            return;
        }

        $res->json(["message" => "New ingredient has been listed",
            "ingredient" => $db->select("ingredienti", ["id" => $id])]);
    });
$app->route("/ingredient/:id")
    ->get(function (array $req, Response $res) use ($db) {
        $id = $req["params"]["id"];
        $ingredient = $db->select("ingredienti", ["id" => $id])[0];
        $res->json(["data" => $ingredient]);
    })
    ->put(function (array $req, Response $res) use ($db) {
        $id = $req["params"]["id"];

        $name = $req["body"]["name"];
        $calories = $req["body"]["calories"];
        $quantity = $req["body"]["quantity"];
        $unit = $req["body"]["unit"];
        $price = $req["body"]["price"];

        $unitInTable = $db->select("folla", ["unita" => $unit]);
        if (count($unitInTable) > 1) {
            $res->json(["message" => "Unit: " . $unit . " does not exist. Please create unit first"], HTTP_STATUS_CODE::BAD_REQUEST);
            return;
        }
        $unitId = $unitInTable[0]["id"];

        $db->update("ingredienti", $id, ["cognome" => "$name", "calorie" => "$calories", "quantita" => "$quantity", "follaID" => $unitId, "prezzo" => "$price"]);

        $res->json(["message" => "Ingredient has been updated", "data" => $db->select("ingredienti", ["id" => $id])[0]]);
    })
    ->delete(function (array $req, Response $res) use ($db) {
        $id = $req["params"]["id"];
        $db->delete("ingredienti", $id);
        $res->json(["message" => "Ingredient has been deleted"]);
    });

/*
 * Unit
 */
$app->route("/unit")
    ->get(function (array $req, Response $res) use ($db) {
        $res->json(["data" => $db->select("folla")]);
    })
    ->post(function (array $req, Response $res) use ($db) {
        $name = $req["body"]["name"];

        if (!isset($name) || strlen($name) < 1 || strlen($name) > 200) {
            $res->json(["message" => "Invalid Request. Please follow the Documentation", HTTP_STATUS_CODE::BAD_REQUEST]);
            return;
        }

        $selectWithSameName = $db->select("folla", ["unita" => $name]);
        if (count($selectWithSameName) >= 1) {
            $res->json(["message" => "Unit: " . $name . " already exists", "data" => $selectWithSameName[0]], HTTP_STATUS_CODE::BAD_REQUEST);
            return;
        }

        $newUnitId = $db->insert("folla", ["unita" => $name]);
        $res->json(["message" => "Unit: '" . $name . "' created", "data" => $db->select("folla", ["id" => $newUnitId])[0]], HTTP_STATUS_CODE::CREATED);
    });
$app->route("/unit/:id")
    ->get(function (array $req, Response $res) use ($db) {
        $id = $req["params"]["id"];
        $ingredient = $db->select("folla", ["id" => $id])[0];
        $res->json(["data" => $ingredient]);
    })
    ->put(function (array $req, Response $res) use ($db) {
        $id = $req["params"]["id"];
        $name = $req["body"]["name"];

        if (!isset($name) || strlen($name) < 1 || strlen($name) > 200) {
            $res->json(["message" => "Invalid Request. Please follow the Documentation", HTTP_STATUS_CODE::BAD_REQUEST]);
            return;
        }
        $db->update("folla", $id, ["unita" => $name]);
        $res->json(["message" => "Unit has been updated", "data" => $db->select("folla", ["id" => $id])]);
    })
    ->delete(function (array $req, Response $res) use ($db) {
        $id = $req["params"]["id"];
        $db->delete("folla", $id);
        $res->json(["message" => "Unit has been deleted"]);
    });

/*
 * List
 */
$app->use("/list", function (array $req, Response $res) {
    if (!isset($req["user"])) {
        $res->json(["message" => "You need to be signed in to use lists"], HTTP_STATUS_CODE::FORBIDDEN);
        die;
    }
});

$app->route("/list")
    ->get(function (array $req, Response $res) use ($db) {
        $lists = $db->select("elenco", ["utenteID" => $req["user"]->id]);
        // add items to list
        foreach ($lists as &$list) {
            $listId = $list["id"];
            $ingredients = $db->select("elencoIngredienti", ["elencoId" => $listId]);
            $ingredientData = [];
            foreach ($ingredients as &$ingredient) {
                $ingredientData[] = $db->select("Ingredienti", ["id" => $ingredient["ingredientiID"]]);
            }
            $list["inredients"] = $ingredientData;
        }
        $res->json(["data" => $lists]);
    })
    ->post(function (array $req, Response $res) use ($db) {
        $name = $req["body"]["name"];
        $bgColor = $req["body"]["backgoundColor"] ?? "#fff";

        if (!isset($name) || strlen($name) < 1) {
            $res->json(["message" => "Invalid Request. Please follow the Documentation"], HTTP_STATUS_CODE::BAD_REQUEST);
            return;
        }

        $lastListId = $db->insert("elenco", ["cognome" => $name, "coloreDiSfondo" => $bgColor, "utenteID" => $req["user"]->id]);
        $res->json(["message" => "New List '" . $name . "' created", "data" => $db->select("elenco", ["id" => $lastListId])], HTTP_STATUS_CODE::CREATED);
    });
$app->route("/list/:id")
    ->get(function (array $req, Response $res) use ($db) {
        $id = $req["params"]["id"];
        $query = $db->select("elenco", ["id" => $id, "utenteID" => $req["user"]->id]);

        if (count($query) < 1) {
            $res->json(["message" => "List does not exists or you dont have permissions to view it"]);
            return;
        }
        $list = $query[0];

        $listId = $list["id"];
        $ingredients = $db->select("elencoIngredienti", ["elencoId" => $listId]);
        $ingredientData = [];
        foreach ($ingredients as &$ingredient) {
            $ingredientData[] = $db->select("Ingredienti", ["id" => $ingredient["ingredientiID"]]);
        }
        $list["inredients"] = $ingredientData;

        $res->json(["data" => $list]);
    })
    ->post(function (array $req, Response $res) use ($db) {
        $id = $req["params"]["id"];
        $ingredientId = $req["body"]["ingredientId"];

        if (!isset($ingredientId)) {
            $res->json(["message" => "You need to set a valid 'ingredientId'", HTTP_STATUS_CODE::BAD_REQUEST]);
            return;
        }

        $newId = $db->insert("elencoIngredienti", ["ingredientiID" => $ingredientId, "elencoID" => $id]);
        if(!$newId){
            $res->json(["message" => "Cannot insert item in list"], HTTP_STATUS_CODE::BAD_REQUEST);
            return;
        }
        $res->json(["message" => "Item has been added"]);
    })
    ->delete(function (array $req, Response $res) use ($db) {
        $id = $req["params"]["id"];

        $list = $db->select("elenco", ["id" => $id]);
        if (count($list) < 1) {
            $res->json(["message" => "List does not exist"]);
            return;
        }
        if ($list[0]["utenteID"] != $req["user"]->id) {
            $res->json(["message" => "You have no permissions the delete this list"], HTTP_STATUS_CODE::FORBIDDEN);
            return;
        }

        $db->delete("elenco", $id);
        $res->json(["message" => "List has been deleted"]);
    });
$app->delete("/list/:id/:item", function (array $req, Response $res) use ($db) {
    $listId = $req["params"]["id"];
    $itemId = $req["params"]["item"];

    $list = $db->select("elenco", ["id" => $listId, "utenteID" => $req["user"]->id]);
    if(count($list) < 1){
        $res->json(["message" => "List does not exist or you dont have the permissions to edit the list"]);
        return;
    }

    $db->delete("elencoIngredienti", $itemId);
    $res->json(["message" => "Item has been deleted"]);
});

$app->start();