package api

import (
	"context"
	"fmt"
	"io"
	"net/http"
	"net/http/cookiejar"
	"net/url"
	"strings"
	"time"

	"github.com/carlmjohnson/requests"
	"golang.org/x/net/publicsuffix"
)

type Client struct {
	baseURL string
	inner   http.Client
}

func NewClient(baseURL, username, password string) (*Client, error) {
	jar, err := cookiejar.New(&cookiejar.Options{PublicSuffixList: publicsuffix.List})
	if err != nil {
		return nil, err
	}
	c := Client{
		baseURL: baseURL,
		inner: http.Client{
			Timeout: time.Second * 10,
			Jar:     jar,
		},
	}
	if err := c.login(username, password); err != nil {
		return nil, err
	}
	return &c, nil
}

func (c *Client) reqBuilder() *requests.Builder {
	return requests.
		URL(c.baseURL).
		Client(&c.inner).
		AddValidator(requests.ValidatorHandler(requests.DefaultValidator, requests.ResponseHandler(func(r *http.Response) error {
			var buf strings.Builder
			_, _ = io.Copy(&buf, r.Body)
			return fmt.Errorf("response body: %v", buf.String())
		})))
}

func (c *Client) login(username, password string) error {
	err := c.reqBuilder().
		Path("/api/v2/auth/login").
		Header("Referer", c.baseURL).
		BodyForm(url.Values{"username": []string{username}, "password": []string{password}}).
		Fetch(context.TODO())
	if err != nil {
		return fmt.Errorf("login: %w", err)
	}
	return nil
}