package endpoints

import (
	"encoding/json"
	"fmt"
	"git.dragse.it/anthrove/e621-to-graph/internal/utils"
	"git.dragse.it/anthrove/e621-to-graph/pkg/e621/model"
	"log"
	"net/http"
)

// GetUser sends an HTTP GET request to fetch user information from e621.net.
// It constructs a URL based on the provided 'host' and 'username'.
// The response is returned as a *http.Response pointer.
func GetUser(client http.Client, requestContext model.RequestContext, username string) (model.User, error) {
	// Create a new HTTP GET request to fetch user information from the specified 'host' and 'username'.
	r, err := http.NewRequest("GET", fmt.Sprintf("%s/users/%s.json", requestContext.Host, username), nil)
	if err != nil {
		// Log the error and return an empty User struct and the error.
		log.Println(err)
		return model.User{}, err
	}

	r.Header.Set("User-Agent", requestContext.UserAgent)
	r.Header.Add("Accept", "application/json")
	r.SetBasicAuth(requestContext.Username, requestContext.APIKey)

	// Send the request using the provided HTTP client.
	resp, err := client.Do(r)
	if err != nil {
		// Log the error and return an empty User struct and the error.
		log.Println(err)
		return model.User{}, err
	}

	// Check if the HTTP response status code indicates success (2xx range).
	if resp.StatusCode < 200 || resp.StatusCode > 300 {
		// If the status code is outside the 2xx range, return an error based on the status code.
		return model.User{}, utils.StatusCodesToError(resp.StatusCode)
	}

	// Initialize a User struct to store the response data.
	var user model.User

	// Decode the JSON response into the user struct.
	err = json.NewDecoder(resp.Body).Decode(&user)
	if err != nil {
		// Log the error and return an empty User struct and the error.
		log.Println(err)
		return model.User{}, err
	}

	// Return the user information and no error (nil).
	return user, nil
}

// GetUsers sends an HTTP GET request to fetch user data from e621.net.
// It constructs a URL based on the provided 'host' and 'query' parameters.
// The response is returned as a *http.Response pointer.
func GetUsers(client http.Client, requestContext model.RequestContext, query map[string]string) ([]model.User, error) {
	// Create a new HTTP GET request.
	r, err := http.NewRequest("GET", fmt.Sprintf("%s/users.json", requestContext.Host), nil)
	if err != nil {
		log.Print(err)
	}

	// Append query parameters to the request URL.
	q := r.URL.Query()
	for k, v := range query {
		q.Add(k, v)
	}
	r.URL.RawQuery = q.Encode()

	r.Header.Set("User-Agent", requestContext.UserAgent)
	r.Header.Add("Accept", "application/json")
	r.SetBasicAuth(requestContext.Username, requestContext.APIKey)

	// Send the request using the provided HTTP client.
	resp, err := client.Do(r)
	if err != nil {
		log.Print(err)
	}

	// Check if the HTTP response status code indicates success (2xx range).
	if resp.StatusCode < 200 || resp.StatusCode > 300 {
		// If the status code is outside the 2xx range, return an error based on the status code.
		return []model.User{}, utils.StatusCodesToError(resp.StatusCode)
	}

	// Initialize a User struct to store the response data.
	var user []model.User

	// Decode the JSON response into the user struct.
	err = json.NewDecoder(resp.Body).Decode(&user)
	if err != nil {
		// Log the error and return an empty User struct and the error.
		log.Println(err)
		return []model.User{}, err
	}

	return user, nil

}