// Package apiclient provides the API client used by the web app
package apiclient

import (
	"encoding/json"
	"fmt"
	"io"
	"net/http"

	"git.agecem.com/agecem/bottin-ag/apiresponse"
)

type APIClient struct {
	Key      string
	Host     string
	Port     int
	Protocol string
}

func New(key, host, protocol string, port int) APIClient {
	return APIClient{
		Key:      key,
		Host:     host,
		Port:     port,
		Protocol: protocol,
	}
}

// Makes APIClient.Call() returning only an error. The Call data is put into the responder parameter's reference
func (a *APIClient) CallResponder(method, route string, requestBody io.Reader, useKey bool, responder apiresponse.Responder) error {
	callResponse, err := a.Call(method, route, requestBody, useKey)
	if err != nil {
		return err
	}
	defer callResponse.Body.Close()

	body, err := io.ReadAll(callResponse.Body)
	if err != nil {
		return err
	}

	err = json.Unmarshal(body, responder)
	if err != nil {
		return err
	}

	return nil
}

func (a *APIClient) Call(method, route string, requestBody io.Reader, useKey bool) (*http.Response, error) {
	var response *http.Response

	endpoint := fmt.Sprintf("%s://%s:%d%s",
		a.Protocol, a.Host, a.Port, route,
	)

	// Create client
	client := &http.Client{}

	// Create request
	request, err := http.NewRequest(method, endpoint, requestBody)
	if err != nil {
		return response, err
	}

	if useKey {
		if a.Key == "" {
			return response, fmt.Errorf("Call to API required a key but none was provided. See --help for instructions on providing an API key.")
		}

		request.Header.Add("Authorization", fmt.Sprintf("Bearer %s", a.Key))
	}

	if requestBody != nil {
		request.Header.Add("Content-Type", "application/json")
	}

	// Fetch Request
	response, err = client.Do(request)
	if err != nil {
		return response, err
	}

	return response, nil
}