<?php

namespace App\Kintone;

use App\Exceptions\ConfigException;
use App\Kintone\Models\KintoneModel;
use Exception;
use Illuminate\Http\Client\Response;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Http;
use Log;

/**
 * @template TValue of KintoneModel
 */
class KintoneAccess
{

    private string $appName;
    private string $host;
    private string $apiToken;
    private int $appId;

    private const DEFAULT_FIELDS = [
        KintoneModel::FIELD_RECORD_NUMBER,
        KintoneModel::FIELD_UPDATED_TIME,
        KintoneModel::FIELD_RECORD_NUMBER,
    ];

    private array $fields = [];

    private string|null $cursor = null;
    private int $cursorDataCount = 0;
    private bool $hasNext = false;

    private const URL_RECORD = "/k/v1/record.json";
    private const URL_CURSOL = "/k/v1/records/cursor.json";
    private const URL_FILE = "/k/v1/file.json";


    public function __construct(string $appName)
    {
        $this->appName = $appName;

        $key = "kintone.host";
        $host = config($key);
        if (!$host) {
            throw new ConfigException("kintone.host", $host);
        }

        $key = "kintone.applications." . $appName . ".apiToken";
        $apiToken = config($key);
        if (!$apiToken) {
            throw new ConfigException($key, $apiToken);
        }

        $key = "kintone.applications." . $appName . ".appId";
        $appId = config($key);
        if (!$appId) {
            throw new ConfigException($key, $appId);
        }

        $this->host = $host;
        $this->apiToken = $apiToken;
        $this->appId = $appId;
    }

    public function setFields(array $fields): static
    {
        $this->fields = [
            ...$fields,
            ...self::DEFAULT_FIELDS,
        ];
        return $this;
    }

    public function __destruct()
    {
        $this->deleteCursor();
    }


    /**
     * @param integer $id
     * @param TValue $result
     * @return Response
     */
    public function find(int $id, KintoneModel &$result): Response
    {

        $response = Http::withHeaders([
            "X-Cybozu-API-Token" => $this->apiToken,
        ])->get($this->getRecordUrl(), [
            "app" => $this->appId,
            "id" => $id,
            'fields' => $this->fields,
        ]);

        if ($response->failed()) {
            $e =  $response->toException();
            if ($e instanceof Exception) {
                Log::error($e->getMessage());
                throw $e;
            }
        }

        $result->setDataFromRecordResponse($response['record']);
        return $response;
    }

    /**
     * @param TValue $model
     * @return void
     */
    public function update(KintoneModel &$model)
    {
        $response = Http::withHeaders([
            "X-Cybozu-API-Token" => $this->apiToken,
        ])->put($this->getRecordUrl(), [
            "app" => $this->appId,
            "id" => $model->getRecordId(),
            "record" => $model->getApiLayout(),
            "revision" => $model->getRevision(),
        ]);

        if ($response->failed()) {
            $e =  $response->toException();
            if ($e instanceof Exception) {
                Log::error($e->getMessage());
                throw $e;
            }
        }

        $model->clean($response["revision"]);
        return $response;
    }

    /**
     * @param TValue $model
     * @return void
     */
    public function create(KintoneModel &$model)
    {
        $response = Http::withHeaders([
            "X-Cybozu-API-Token" => $this->apiToken,
        ])->post($this->getRecordUrl(), [
            "app" => $this->appId,
            "record" => $model->getApiLayout(),
        ]);

        if ($response->failed()) {
            $e =  $response->toException();
            if ($e instanceof Exception) {
                Log::error($e->getMessage());
                throw $e;
            }
        }

        $model->clean($response["revision"]);
        $model->setRecordId($response["id"]);
        return $response;
    }

    public function createCursor(KintoneRecordQuery|null $query = null)
    {
        $data = [
            "app" => $this->appId,
            'fields' => $this->fields,
        ];
        if ($query !== null) {
            $data["query"] = $query->toQuery();
        }

        $response = Http::withHeaders([
            "X-Cybozu-API-Token" => $this->apiToken,
        ])->post($this->getCursorUrl(), $data);

        if ($response->failed()) {
            $e =  $response->toException();
            if ($e instanceof Exception) {
                Log::error($e->getMessage(), ['data' => $data]);
                throw $e;
            }
        }

        $cursor = $response["id"];
        $totalCount = $response["totalCount"];


        if (0 < $totalCount) {
            $this->hasNext = true;
            $this->cursor = $cursor;
            $this->cursorDataCount = $totalCount;
        } else {
            $this->cursor = null;
            $this->hasNext = false;
            $this->cursorDataCount = 0;
        }

        return $response;
    }


    /**
     * @return Collection<int,TValue>
     */
    public function next()
    {
        if (!$this->hasNext) {
            return collect();
        }

        $response = Http::withHeaders([
            "X-Cybozu-API-Token" => $this->apiToken,
        ])->get($this->getCursorUrl(), [
            "id" => $this->cursor,
        ]);

        if ($response->failed()) {
            $e =  $response->toException();
            if ($e instanceof Exception) {
                Log::error($e->getMessage());
                throw $e;
            }
        }

        $ret = collect();

        $hasNext = $response["next"];
        if (!$hasNext) {
            $this->cursor = null;
            $this->hasNext = false;
            $this->cursorDataCount = 0;
        }

        foreach ($response["records"] as $data) {
            /**
             * @var KintoneModel $model
             */
            $model = new $this->appName();

            $model->setDataFromRecordResponse($data);
            $ret->push($model);
        }


        return $ret;
    }

    /**
     * @return Collection<int,TValue>
     */
    public function all(KintoneRecordQuery|null $query = null, array|null $fields = null)
    {

        if ($this->cursor !== null) {
            $this->deleteCursor();
        }
        $this->createCursor($query, $fields);

        $list = collect();
        while (true) {
            $ret = $this->next();

            foreach ($ret as $ele) {
                $list->push($ele);
            }

            if ($this->cursor === null) {
                break;
            }
        }
        return $list;
    }

    public function deleteCursor()
    {
        if ($this->cursor === null) {
            return;
        }

        $response = Http::withHeaders([
            "X-Cybozu-API-Token" => $this->apiToken,
        ])->delete($this->getCursorUrl(), [
            "id" => $this->cursor,
        ]);

        if ($response->failed()) {
            $e =  $response->toException();
            if ($e instanceof Exception) {
                Log::error($e->getMessage());
                throw $e;
            }
        }

        $this->cursor = null;
        $this->hasNext = false;
        $this->cursorDataCount = 0;
    }

    public function fileGet(string $fileKey)
    {
        $response = Http::withHeaders([
            "X-Cybozu-API-Token" => $this->apiToken,
            "Content-Type" => "application/json",
        ])->get($this->getCursorUrl(), [
            "fileKey" => $fileKey,
        ]);

        if ($response->failed()) {
            $e =  $response->toException();
            if ($e instanceof Exception) {
                Log::error($e->getMessage());
                throw $e;
            }
        }
        return $response;
    }

    public function filePut($file): string
    {
        $response = Http::withHeaders([
            "X-Cybozu-API-Token" => $this->apiToken,
            "Content-Type" => "multipart/form-data",
        ])->post($this->getCursorUrl(), $file);

        if ($response->failed()) {
            $e =  $response->toException();
            if ($e instanceof Exception) {
                Log::error($e->getMessage());
                throw $e;
            }
        }
        return $response[''];
    }

    private function getRecordUrl()
    {
        return $this->getUrl(self::URL_RECORD);
    }

    private function getCursorUrl()
    {
        return $this->getUrl(self::URL_CURSOL);
    }

    private function getFileUrl()
    {
        return $this->getUrl(self::URL_FILE);
    }

    private function getUrl(string $path)
    {
        return  $this->host . $path;
    }
}