Initial import with modified Dockerfile for env-based config generation

internal/identity/gitea/provider.go

@@ -0,0 +1,125 @@
+package gitea
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+
+	"github.com/rs/zerolog"
+
+	"github.com/vincentc-afk/gitea-notification-hub/internal/config"
+)
+
+// GiteaUser represents a user from Gitea API
+type GiteaUser struct {
+	ID        int64  `json:"id"`
+	Login     string `json:"login"`
+	FullName  string `json:"full_name"`
+	Email     string `json:"email"`
+	AvatarURL string `json:"avatar_url"`
+}
+
+// Provider implements email lookup via Gitea API
+type Provider struct {
+	baseURL    string
+	token      string
+	httpClient *http.Client
+	logger     zerolog.Logger
+}
+
+// New creates a new Gitea API provider
+func New(cfg *config.GiteaConfig, logger zerolog.Logger) *Provider {
+	return &Provider{
+		baseURL: cfg.URL,
+		token:   cfg.Token,
+		httpClient: &http.Client{
+			Timeout: 10 * time.Second,
+		},
+		logger: logger.With().Str("component", "gitea-provider").Logger(),
+	}
+}
+
+// LookupEmail fetches the real email for a Gitea username via API
+func (p *Provider) LookupEmail(ctx context.Context, username string) (string, error) {
+	url := fmt.Sprintf("%s/api/v1/users/%s", p.baseURL, username)
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return "", fmt.Errorf("creating request: %w", err)
+	}
+
+	// Add authorization header if token is provided
+	if p.token != "" {
+		req.Header.Set("Authorization", "token "+p.token)
+	}
+	req.Header.Set("Accept", "application/json")
+
+	resp, err := p.httpClient.Do(req)
+	if err != nil {
+		return "", fmt.Errorf("fetching user from Gitea: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusNotFound {
+		return "", fmt.Errorf("user %s not found in Gitea", username)
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("Gitea API returned status %d", resp.StatusCode)
+	}
+
+	var user GiteaUser
+	if err := json.NewDecoder(resp.Body).Decode(&user); err != nil {
+		return "", fmt.Errorf("decoding Gitea response: %w", err)
+	}
+
+	if user.Email == "" {
+		return "", fmt.Errorf("user %s has no email in Gitea", username)
+	}
+
+	p.logger.Debug().
+		Str("username", username).
+		Str("email", user.Email).
+		Str("full_name", user.FullName).
+		Msg("found user email via Gitea API")
+
+	return user.Email, nil
+}
+
+// GetUser fetches full user info from Gitea API
+func (p *Provider) GetUser(ctx context.Context, username string) (*GiteaUser, error) {
+	url := fmt.Sprintf("%s/api/v1/users/%s", p.baseURL, username)
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return nil, fmt.Errorf("creating request: %w", err)
+	}
+
+	if p.token != "" {
+		req.Header.Set("Authorization", "token "+p.token)
+	}
+	req.Header.Set("Accept", "application/json")
+
+	resp, err := p.httpClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("fetching user from Gitea: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusNotFound {
+		return nil, fmt.Errorf("user %s not found in Gitea", username)
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("Gitea API returned status %d", resp.StatusCode)
+	}
+
+	var user GiteaUser
+	if err := json.NewDecoder(resp.Body).Decode(&user); err != nil {
+		return nil, fmt.Errorf("decoding Gitea response: %w", err)
+	}
+
+	return &user, nil
+}