package config

import (
	"strings"
	"testing"
)

func TestResolveModel(t *testing.T) {
	p := &Provider{
		Models: Models{
			Default: "ds-chat",
			Sonnet:  "ds-chat",
			Haiku:   "ds-haiku",
			Opus:    "ds-opus",
			Extra:   map[string]string{"claude-3-5-haiku-20241022": "ds-fast"},
		},
	}
	cases := []struct {
		requested string
		want      string
	}{
		{"claude-sonnet-4-5-20250929", "ds-chat"},
		{"claude-3-5-haiku-20241022", "ds-fast"}, // exact Extra match wins
		{"some-haiku-model", "ds-haiku"},         // keyword match
		{"claude-opus-4-1", "ds-opus"},
		{"ds-chat", "ds-chat"}, // already an upstream name
		{"unknown-model", "ds-chat"},
		{"", "ds-chat"},
	}
	for _, tc := range cases {
		if got := p.ResolveModel(tc.requested); got != tc.want {
			t.Errorf("ResolveModel(%q) = %q, want %q", tc.requested, got, tc.want)
		}
	}
}

func TestResolveModelWithoutDefaults(t *testing.T) {
	p := &Provider{Models: Models{Sonnet: "kimi-k2"}}
	if got := p.ResolveModel("claude-3-7-sonnet"); got != "kimi-k2" {
		t.Errorf("sonnet request = %q, want kimi-k2", got)
	}
	// No default configured: unknown models pass through unchanged.
	if got := p.ResolveModel("weird-model"); got != "weird-model" {
		t.Errorf("unknown request = %q, want passthrough", got)
	}
}

func TestStoreRoundTrip(t *testing.T) {
	t.Setenv("CROSSRELAY_HOME", t.TempDir())
	store, err := Load()
	if err != nil {
		t.Fatalf("Load: %v", err)
	}
	if !strings.HasPrefix(store.Config().RelayToken, "crl_") {
		t.Fatalf("relay token = %q, want crl_ prefix", store.Config().RelayToken)
	}
	if store.Config().Language != LanguageChinese {
		t.Fatalf("default language = %q", store.Config().Language)
	}
	p, err := store.AddProvider("DeepSeek", "deepseek", "https://api.deepseek.com/v1", "sk-test",
		Models{Default: "deepseek-chat", Sonnet: "deepseek-chat", Haiku: "deepseek-chat", Opus: "deepseek-chat"})
	if err != nil {
		t.Fatalf("AddProvider: %v", err)
	}
	if _, err := store.ActivateClaude(p.ID); err != nil {
		t.Fatalf("ActivateClaude: %v", err)
	}

	reloaded, err := Load()
	if err != nil {
		t.Fatalf("reload: %v", err)
	}
	if got := reloaded.ActiveClaude(); got == nil || got.Name != "DeepSeek" {
		t.Fatalf("active provider after reload = %+v", got)
	}
	if len(reloaded.Config().Providers) != 1 {
		t.Fatalf("providers after reload = %d", len(reloaded.Config().Providers))
	}
}

func TestAddProviderValidation(t *testing.T) {
	t.Setenv("CROSSRELAY_HOME", t.TempDir())
	store, _ := Load()
	cases := []struct {
		name, baseURL, apiKey string
	}{
		{"", "https://x.com/v1", "sk"},
		{"p", "", "sk"},
		{"p", "ftp://x.com", "sk"},
		{"p", "https://x.com/v1", ""},
	}
	for _, tc := range cases {
		if _, err := store.AddProvider(tc.name, "", tc.baseURL, tc.apiKey, Models{}); err == nil {
			t.Errorf("AddProvider(%q, %q, %q) succeeded, want error", tc.name, tc.baseURL, tc.apiKey)
		}
	}
}

func TestUpdateProviderKeepsKeyWhenEmpty(t *testing.T) {
	t.Setenv("CROSSRELAY_HOME", t.TempDir())
	store, _ := Load()
	p, _ := store.AddProvider("p", "", "https://x.com/v1", "sk-secret", Models{Default: "m1"})
	updated, err := store.UpdateProvider(p.ID, "p2", "", "https://x.com/v1/", "", Models{Default: "m2"})
	if err != nil {
		t.Fatalf("UpdateProvider: %v", err)
	}
	if updated.APIKey != "sk-secret" {
		t.Errorf("api key = %q, want sk-secret", updated.APIKey)
	}
	if updated.Name != "p2" || updated.Models.Default != "m2" {
		t.Errorf("update lost fields: %+v", updated)
	}
	if updated.BaseURL != "https://x.com/v1" {
		t.Errorf("base url = %q, want trailing slash trimmed", updated.BaseURL)
	}
}

func TestDeleteProviderClearsActive(t *testing.T) {
	t.Setenv("CROSSRELAY_HOME", t.TempDir())
	store, _ := Load()
	p, _ := store.AddProvider("p", "", "https://x.com/v1", "sk", Models{})
	store.ActivateClaude(p.ID)
	if err := store.DeleteProvider(p.ID); err != nil {
		t.Fatalf("DeleteProvider: %v", err)
	}
	if store.ActiveClaude() != nil {
		t.Error("active provider survived deletion")
	}
}

func TestSetGatewayValidation(t *testing.T) {
	t.Setenv("CROSSRELAY_HOME", t.TempDir())
	store, _ := Load()
	if err := store.SetGateway(Gateway{PortMode: "fixed", FixedPort: 8787}); err != nil {
		t.Fatalf("SetGateway: %v", err)
	}
	if err := store.SetGateway(Gateway{PortMode: "fixed", FixedPort: 0}); err == nil {
		t.Error("fixed port 0 accepted")
	}
	if err := store.SetGateway(Gateway{PortMode: "bogus"}); err == nil {
		t.Error("bogus port mode accepted")
	}
	if err := store.SetLanguage("fr"); err == nil {
		t.Error("unknown language accepted")
	}
}