package platformsettings

import (
	"context"
	"strings"
	"testing"
)

func TestValidAIRole(t *testing.T) {
	for _, role := range AIRoles {
		if !ValidAIRole(role) {
			t.Fatalf("%q should be valid", role)
		}
	}
	if ValidAIRole("embeddings") {
		t.Fatal("embeddings alias is not a stored role key")
	}
	if ValidAIRole("") {
		t.Fatal("empty role should be invalid")
	}
}

func TestPublicAIConfigs_masksSecret(t *testing.T) {
	key := DeriveKey("test-ai-config-secret-material", "fallback")
	plain := "sk-live-super-secret-key"
	enc, err := EncryptSecret(key, plain)
	if err != nil {
		t.Fatal(err)
	}
	svc := &Service{Key: key}
	doc := storedDoc{
		AIConfigs: map[string]aiConfigStored{
			AIRoleSupport: {
				Provider:    "openai",
				BaseURL:     "https://api.openai.com/v1",
				Model:       "gpt-4o-mini",
				APIKeyEnc:   enc,
				APIKeyLast4: last4(plain),
				Enabled:     true,
				Extras:      map[string]string{"temperature": "0.2"},
			},
		},
	}
	view := svc.publicAIConfigs(doc)
	if len(view) != len(AIRoles) {
		t.Fatalf("expected %d roles, got %d", len(AIRoles), len(view))
	}
	got := view[AIRoleSupport]
	if got.APIKeyMasked == "" || strings.Contains(got.APIKeyMasked, "super-secret") {
		t.Fatalf("api key not masked: %+v", got)
	}
	if got.HasAPIKey != true || got.APIKeyLast4 != last4(plain) {
		t.Fatalf("unexpected mask meta: %+v", got)
	}
	if got.Extras["temperature"] != "0.2" {
		t.Fatalf("extras: %+v", got.Extras)
	}
	if view[AIRoleDocsAPI].Role != AIRoleDocsAPI {
		t.Fatalf("missing empty role stub: %+v", view[AIRoleDocsAPI])
	}
}

func TestPublicAIConfigs_processingFallsBackToOpenAI(t *testing.T) {
	key := DeriveKey("test-ai-config-secret-material", "fallback")
	plain := "sk-legacy-abcdef12"
	enc, err := EncryptSecret(key, plain)
	if err != nil {
		t.Fatal(err)
	}
	svc := &Service{Key: key}
	doc := storedDoc{
		OpenAI: openaiStored{
			BaseURL:     "https://example.test/v1",
			Model:       "gpt-test",
			APIKeyEnc:   enc,
			APIKeyLast4: last4(plain),
		},
	}
	view := svc.publicAIConfigs(doc)
	got := view[AIRoleProcessing]
	if !got.HasAPIKey || got.Source != SourceDB || got.Model != "gpt-test" {
		t.Fatalf("processing fallback: %+v", got)
	}
	if strings.Contains(got.APIKeyMasked, "legacy") {
		t.Fatalf("leaked key: %q", got.APIKeyMasked)
	}
}

func TestResolveAIConfig_envFallback(t *testing.T) {
	svc := NewService(nil, EnvConfig{
		OpenAIAPIKey:  "env-key-1234",
		OpenAIBaseURL: "https://api.openai.com/v1",
		OpenAIModel:   "gpt-4o",
	})
	got, err := svc.ResolveAIConfig(context.Background(), AIRoleProcessing)
	if err != nil {
		t.Fatal(err)
	}
	if got.APIKey != "env-key-1234" || got.Source != SourceEnv || !got.Enabled {
		t.Fatalf("got %+v", got)
	}
	support, err := svc.ResolveAIConfig(context.Background(), AIRoleSupport)
	if err != nil {
		t.Fatal(err)
	}
	if support.APIKey != "" || support.Source != SourceNone {
		t.Fatalf("support should not use openai env: %+v", support)
	}
	vec, err := svc.ResolveAIConfig(context.Background(), AIRoleVectorization)
	if err != nil {
		t.Fatal(err)
	}
	if vec.APIKey != "env-key-1234" || vec.Source != SourceEnv || vec.Model == "" {
		t.Fatalf("vectorization env fallback: %+v", vec)
	}
}

func TestPatchAIExtras(t *testing.T) {
	var extras map[string]string
	val := "1536"
	if err := patchAIExtras(&extras, map[string]*string{"dimensions": &val}); err != nil {
		t.Fatal(err)
	}
	if extras["dimensions"] != "1536" {
		t.Fatalf("got %#v", extras)
	}
	if err := patchAIExtras(&extras, map[string]*string{"dimensions": nil}); err != nil {
		t.Fatal(err)
	}
	if extras != nil {
		t.Fatalf("expected nil after delete, got %#v", extras)
	}
	if err := patchAIExtras(&extras, map[string]*string{"": &val}); err == nil {
		t.Fatal("expected empty key error")
	}
	if err := patchAIExtras(&extras, map[string]*string{"bad key": &val}); err == nil {
		t.Fatal("expected whitespace key error")
	}
}

func TestPatchAIConfig_keepsSecretWhenOmitted(t *testing.T) {
	key := DeriveKey("test-ai-config-secret-material", "fallback")
	enc, err := EncryptSecret(key, "keep-me-secret")
	if err != nil {
		t.Fatal(err)
	}
	svc := &Service{Key: key}
	st := aiConfigStored{APIKeyEnc: enc, APIKeyLast4: last4("keep-me-secret"), Provider: "openai"}
	model := "new-model"
	if err := svc.patchAIConfig(&st, AIConfigUpdate{Model: &model}); err != nil {
		t.Fatal(err)
	}
	if st.APIKeyEnc != enc || st.Model != "new-model" {
		t.Fatalf("unexpected state: %+v", st)
	}
	empty := ""
	if err := svc.patchAIConfig(&st, AIConfigUpdate{APIKey: &empty}); err != nil {
		t.Fatal(err)
	}
	if st.APIKeyEnc != enc {
		t.Fatal("empty api_key should keep existing")
	}
}