package forgejo

import (
	"context"
	"fmt"
	"strings"

	"github.com/jackc/pgx/v5/pgxpool"
	"github.com/rs/zerolog/log"

	"github.com/mattnite/cairn/internal/models"
)

// Sync handles bidirectional state synchronization between Cairn and Forgejo.
type Sync struct {
	Client *Client
	Pool   *pgxpool.Pool
}

// CreateIssueForCrashGroup creates a Forgejo issue for a new crash group.
func (s *Sync) CreateIssueForCrashGroup(ctx context.Context, group *models.CrashGroup, sampleTrace string) error {
	if s.Client == nil {
		return nil
	}

	repo, err := models.GetRepositoryByID(ctx, s.Pool, group.RepositoryID)
	if err != nil {
		return fmt.Errorf("getting repository: %w", err)
	}

	body := fmt.Sprintf(`## Crash Group

**Fingerprint:** `+"`%s`"+`
**First seen:** %s
**Type:** %s

### Sample Stack Trace

`+"```"+`
%s
`+"```"+`

---
*Auto-created by [Cairn](/) — crash artifact aggregator*
`, group.Fingerprint, group.FirstSeenAt.Format("2006-01-02 15:04:05"), group.Title, sampleTrace)

	issue, err := s.Client.CreateIssue(ctx, repo.Owner, repo.Name, CreateIssueRequest{
		Title: "[Cairn] " + group.Title,
		Body:  body,
	})
	if err != nil {
		return fmt.Errorf("creating issue: %w", err)
	}

	return models.UpdateCrashGroupIssue(ctx, s.Pool, group.ID, issue.Number, issue.HTMLURL)
}

// HandleIssueEvent processes a Forgejo issue webhook event for state sync.
func (s *Sync) HandleIssueEvent(ctx context.Context, event *WebhookEvent) error {
	if event.Issue == nil {
		return nil
	}

	// Only handle issues that start with [Cairn] prefix.
	if !strings.HasPrefix(event.Issue.Title, "[Cairn] ") {
		return nil
	}

	switch event.Action {
	case "closed":
		return models.ResolveCrashGroupByIssue(ctx, s.Pool, event.Issue.Number)
	case "reopened":
		return models.ReopenCrashGroupByIssue(ctx, s.Pool, event.Issue.Number)
	}

	return nil
}

// HandlePushEvent processes a push webhook event for commit enrichment.
func (s *Sync) HandlePushEvent(ctx context.Context, event *WebhookEvent) {
	if event.Repo == nil || event.After == "" {
		return
	}
	log.Info().Str("repo", event.Repo.FullName).Str("sha", event.After[:8]).Msg("Push event")
}