feat: include file content in llm prompt context (#13)

internal/core/service/issue_manager.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"log/slog"
+	"path/filepath"
 	"regexp"
 	"strings"
 	"time"
@@ -220,6 +221,13 @@ func (m *IssueManager) extractResources(ctx context.Context, forge port.Forge, p
 
 	resources = append(resources, issues...)
 
+	files, err := m.extractFiles(ctx, forge, projectID, issueSummary)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not extract files")
+	}
+
+	resources = append(resources, files...)
+
 	return resources, nil
 }
 
@@ -256,6 +264,36 @@ func (m *IssueManager) extractIssues(ctx context.Context, forge port.Forge, proj
 	return resources, nil
 }
 
+var fileRefRegExp = regexp.MustCompile(`(?i)(?:\/[^\/]+)+\/?[^\s]+(?:\.[^\s]+)+|[^\s]+(?:\.[^\s]+)+`)
+
+func (m *IssueManager) extractFiles(ctx context.Context, forge port.Forge, projectID string, issueSummary string) ([]*model.Resource, error) {
+	fileRefMatches := fileRefRegExp.FindAllStringSubmatch(issueSummary, -1)
+
+	paths := make([]string, 0, len(fileRefMatches))
+	for _, m := range fileRefMatches {
+		paths = append(paths, m[0])
+	}
+
+	resources := make([]*model.Resource, 0)
+
+	for _, p := range paths {
+		data, err := forge.GetFile(ctx, projectID, p)
+		if err != nil {
+			slog.ErrorContext(ctx, "could not retrieve file", slog.Any("error", errors.WithStack(err)), slog.String("path", p))
+			continue
+		}
+
+		resources = append(resources, &model.Resource{
+			Name:    p,
+			Type:    "File",
+			Syntax:  strings.TrimPrefix(filepath.Ext(p), "."),
+			Content: string(data),
+		})
+	}
+
+	return resources, nil
+}
+
 func NewIssueManager(llmClient llm.Client, forgeFactories ...ForgeFactory) *IssueManager {
 	return &IssueManager{
 		llmClient:      llmClient,