package render

import (
	"encoding/json"
	"testing"

	"webui4frpc/internal/store"
)

func TestRenderTCPProxy(t *testing.T) {
	remote := store.Remote{Name: "srv", IP: "1.2.3.4", Port: 7000, Token: "secret"}
	data, err := Render(remote, []Proxy{
		{Name: "web", Type: "tcp", LocalIP: "127.0.0.1", LocalPort: 8080, RemotePort: 8080},
	})
	if err != nil {
		t.Fatal(err)
	}
	var cfg Config
	if err := json.Unmarshal(data, &cfg); err != nil {
		t.Fatal(err)
	}
	if cfg.ServerAddr != "1.2.3.4" || cfg.Auth.Token != "secret" {
		t.Fatalf("cfg = %+v", cfg)
	}
	if len(cfg.Proxies) != 1 || cfg.Proxies[0].RemotePort != 8080 {
		t.Fatalf("proxies = %+v", cfg.Proxies)
	}
}

func TestRenderDuplicateServiceGetsPortSuffix(t *testing.T) {
	remote := store.Remote{Name: "srv", IP: "1.2.3.4", Port: 7000}
	proxy := []Proxy{
		{Name: "web", Type: "tcp", LocalIP: "127.0.0.1", LocalPort: 8080, RemotePort: 8080},
		{Name: "web", Type: "tcp", LocalIP: "127.0.0.1", LocalPort: 8080, RemotePort: 8081},
	}
	data, err := Render(remote, proxy)
	if err != nil {
		t.Fatal(err)
	}
	var cfg Config
	_ = json.Unmarshal(data, &cfg)
	if len(cfg.Proxies) != 2 {
		t.Fatalf("proxies = %+v", cfg.Proxies)
	}
	if cfg.Proxies[1].Name != "web-8081" {
		t.Fatalf("second proxy name = %q", cfg.Proxies[1].Name)
	}
}

func TestRenderTransportAdvanced(t *testing.T) {
	remote := store.Remote{
		Name: "srv", IP: "1.2.3.4", Port: 7000, Token: "secret",
		TransportProtocol: "kcp", TransportTLS: true, TransportPool: 3, TransportTLSServerName: "frps.local",
	}
	data, err := Render(remote, []Proxy{
		{Name: "web", Type: "tcp", LocalIP: "127.0.0.1", LocalPort: 8080, RemotePort: 8080,
			UseEncryption: true, UseCompression: true, BandwidthLimit: "1MB", PoolCount: 2,
			Metadatas: map[string]string{"env": "prod"}, Annotations: map[string]string{"owner": "ops"}},
	})
	if err != nil {
		t.Fatal(err)
	}
	var cfg Config
	if err := json.Unmarshal(data, &cfg); err != nil {
		t.Fatal(err)
	}
	if cfg.Transport.Protocol != "kcp" {
		t.Fatalf("transport.protocol = %q, want kcp", cfg.Transport.Protocol)
	}
	if cfg.Transport.TLS == nil || !cfg.Transport.TLS.Enable || cfg.Transport.TLS.ServerName != "frps.local" {
		t.Fatalf("transport.tls = %+v", cfg.Transport.TLS)
	}
	if cfg.Transport.PoolCount != 3 {
		t.Fatalf("transport.poolCount = %d, want 3", cfg.Transport.PoolCount)
	}
	p := cfg.Proxies[0]
	if !p.UseEncryption || !p.UseCompression || p.BandwidthLimit != "1MB" || p.PoolCount != 2 {
		t.Fatalf("proxy advanced fields = %+v", p)
	}
	if p.Metadatas["env"] != "prod" || p.Annotations["owner"] != "ops" {
		t.Fatalf("proxy metadatas/annotations = %+v", p)
	}
}

func TestRenderTransportOmittedWhenEmpty(t *testing.T) {
	remote := store.Remote{Name: "srv", IP: "1.2.3.4", Port: 7000}
	data, err := Render(remote, []Proxy{
		{Name: "web", Type: "tcp", LocalIP: "127.0.0.1", LocalPort: 8080, RemotePort: 8080},
	})
	if err != nil {
		t.Fatal(err)
	}
	var cfg Config
	if err := json.Unmarshal(data, &cfg); err != nil {
		t.Fatal(err)
	}
	if cfg.Transport.Protocol != "" || cfg.Transport.TLS != nil || cfg.Transport.PoolCount != 0 {
		t.Fatalf("transport should be empty, got %+v", cfg.Transport)
	}
	if cfg.Proxies[0].UseEncryption || cfg.Proxies[0].BandwidthLimit != "" {
		t.Fatalf("proxy advanced should be empty, got %+v", cfg.Proxies[0])
	}
}

func TestRenderHTTPAdvanced(t *testing.T) {
	remote := store.Remote{Name: "srv", IP: "1.2.3.4", Port: 7000, Token: "secret"}
	data, err := Render(remote, []Proxy{
		{Name: "web", Type: "http", LocalIP: "127.0.0.1", LocalPort: 8080,
			CustomDomains: []string{"app.example.com"},
			Locations: []string{"/api", "/admin"},
			HostHeaderRewrite: "backend.internal",
			HTTPHeaders: map[string]string{"X-Custom": "val"},
			BasicAuthUser: "user", BasicAuthPassword: "pass"},
	})
	if err != nil {
		t.Fatal(err)
	}
	var cfg Config
	if err := json.Unmarshal(data, &cfg); err != nil {
		t.Fatal(err)
	}
	p := cfg.Proxies[0]
	if p.CustomDomains[0] != "app.example.com" {
		t.Fatalf("customDomains = %+v", p.CustomDomains)
	}
	if len(p.Locations) != 2 || p.Locations[0] != "/api" {
		t.Fatalf("locations = %+v", p.Locations)
	}
	if p.HostHeaderRewrite != "backend.internal" {
		t.Fatalf("hostHeaderRewrite = %q", p.HostHeaderRewrite)
	}
	if p.HTTPHeaders["X-Custom"] != "val" {
		t.Fatalf("httpHeaders = %+v", p.HTTPHeaders)
	}
	if p.HTTPBasicAuth == nil || p.HTTPBasicAuth.User != "user" || p.HTTPBasicAuth.Password != "pass" {
		t.Fatalf("basicAuth = %+v", p.HTTPBasicAuth)
	}
}

func TestRenderHTTPSUsesCustomDomains(t *testing.T) {
	remote := store.Remote{Name: "srv", IP: "1.2.3.4", Port: 7000}
	data, err := Render(remote, []Proxy{
		{Name: "secure", Type: "https", LocalIP: "127.0.0.1", LocalPort: 8443,
			CustomDomains: []string{"secure.example.com"}},
	})
	if err != nil {
		t.Fatal(err)
	}
	var cfg Config
	_ = json.Unmarshal(data, &cfg)
	p := cfg.Proxies[0]
	if p.RemotePort != 0 {
		t.Fatalf("https proxy should not set remotePort, got %d", p.RemotePort)
	}
	if len(p.CustomDomains) != 1 || p.CustomDomains[0] != "secure.example.com" {
		t.Fatalf("customDomains = %+v", p.CustomDomains)
	}
}