package lib

import (
	"bytes"
	"encoding/json"
	"fmt"
	"net/http"
)

type Linkedin struct {
	accessToken string
	authorURN   string
	client      *http.Client
}

func NewLinkedin(accessToken, authorURN string) *Linkedin {
	return &Linkedin{
		accessToken: accessToken,
		authorURN:   authorURN,
		client:      &http.Client{},
	}
}

func (l *Linkedin) Post(video Video) error {
	payload := map[string]any{
		"author":         l.authorURN,
		"lifecycleState": "PUBLISHED",
		"specificContent": map[string]any{
			"com.linkedin.ugc.ShareContent": map[string]any{
				"shareCommentary": map[string]any{
					"text": video.Title,
				},
				"shareMediaCategory": "ARTICLE",
				"media": []map[string]any{
					{
						"status":      "READY",
						"originalUrl": video.URL,
					},
				},
			},
		},
		"visibility": map[string]any{
			"com.linkedin.ugc.MemberNetworkVisibility": "PUBLIC",
		},
	}

	body, err := json.Marshal(payload)
	if err != nil {
		return err
	}

	req, err := http.NewRequest(http.MethodPost, "https://api.linkedin.com/v2/ugcPosts", bytes.NewBuffer(body))
	if err != nil {
		return err
	}
	req.Header.Set("Authorization", "Bearer "+l.accessToken)
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("X-Restli-Protocol-Version", "2.0.0")

	resp, err := l.client.Do(req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	if resp.StatusCode >= 400 {
		return fmt.Errorf("linkedin api error: status %d", resp.StatusCode)
	}
	return nil
}