feat: implement YAML-based configuration, .env support, and customizable prompt templates for AI analysis

internal/config/config_test.go

@@ -0,0 +1,46 @@
+package config
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestConfigLoadEnvAndAppConfig(t *testing.T) {
+	tempDir := t.TempDir()
+	envPath := filepath.Join(tempDir, ".env")
+	configYAMLPath := filepath.Join(tempDir, "config.yaml")
+
+	_ = os.WriteFile(envPath, []byte("TEST_SECRET_KEY=12345\nDEEPSEEK_API_KEY=test-sk-key\n"), 0644)
+	_ = os.WriteFile(configYAMLPath, []byte(`
+server:
+  port: "9090"
+  log_level: "debug"
+ai_trigger:
+  analysis_threshold: 35.0
+prompts:
+  system_prompt_path: "sys.txt"
+`), 0644)
+
+	LoadEnvFile(envPath)
+	if os.Getenv("TEST_SECRET_KEY") != "12345" {
+		t.Errorf("expected TEST_SECRET_KEY to be 12345, got %q", os.Getenv("TEST_SECRET_KEY"))
+	}
+
+	cfg := &Config{
+		Port:      "8080",
+		LogLevel:  "info",
+		AppConfig: configYAMLPath,
+	}
+	cfg.Normalize()
+
+	if cfg.Port != "9090" {
+		t.Errorf("expected port 9090 from config.yaml, got %s", cfg.Port)
+	}
+	if cfg.AnalysisThreshold != 35.0 {
+		t.Errorf("expected analysis threshold 35.0, got %f", cfg.AnalysisThreshold)
+	}
+	if cfg.LLMProvider != "deepseek" {
+		t.Errorf("expected LLMProvider to be deepseek, got %s", cfg.LLMProvider)
+	}
+}