package playtogo

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"log/slog"
	"net/http"
	"strings"
	"time"
)

type Client struct {
	baseURL    string
	token      string
	httpClient *http.Client
}

func New(baseURL, token string) *Client {
	return &Client{
		baseURL: strings.TrimRight(baseURL, "/"),
		token:   token,
		httpClient: &http.Client{
			Timeout: 10 * time.Second,
		},
	}
}

func (c *Client) do(ctx context.Context, method, path string, body, result any) error {
	var reader io.Reader

	if body != nil {
		data, err := json.Marshal(body)
		if err != nil {
			return fmt.Errorf("encode request: %s", err)
		}

		reader = bytes.NewReader(data)
	}

	req, err := http.NewRequestWithContext(ctx, method, c.baseURL+path, reader)
	if err != nil {
		return fmt.Errorf("create reqest: %s", err)
	}

	headers := map[string]string{
		"Accept":        "application/json",
		"Authorization": "Bearer " + c.token,
	}

	for k, v := range headers {
		req.Header.Set(k, v)
	}

	if body != nil {
		req.Header.Set("Content-Type", "application/json")
	}

	resp, err := c.httpClient.Do(req)
	if err != nil {
		return fmt.Errorf("send reqest: %s", err)
	}
	defer resp.Body.Close()

	slog.Debug("response", "status code", resp.StatusCode)

	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
		return fmt.Errorf("API returned HTTP %d", resp.StatusCode)
	}

	if result == nil {
		return fmt.Errorf("decode response: %s", err)
	}

	if err := json.NewDecoder(resp.Body).Decode(result); err != nil {
		return fmt.Errorf("decode response: %w", err)
	}

	return nil
}