package main

import (
	"os"
	"path/filepath"
	"testing"
)

func TestConfigurationRequiresDatabaseAndExternalKey(t *testing.T) {
	t.Setenv("BELL_DB_DSN", "")
	t.Setenv("BELL_AUDIT_KEYS_FILE", "")
	if _, err := loadConfiguration(); err == nil {
		t.Fatal("missing Bell database was accepted")
	}
	t.Setenv("BELL_DB_DSN", "postgres://bell@127.0.0.1/yovision")
	t.Setenv("BELL_AUDIT_KEYS_FILE", "relative.json")
	if _, err := loadConfiguration(); err == nil {
		t.Fatal("relative Bell key file was accepted")
	}
}

func TestAlertsAreDisabledByDefaultAndConsoleRequiresLoopbackContext(t *testing.T) {
	t.Setenv("BELL_DB_DSN", "postgres://bell@127.0.0.1/yovision")
	t.Setenv("BELL_AUDIT_KEYS_FILE", filepath.Join(t.TempDir(), "audit.json"))
	value, err := loadConfiguration()
	if err != nil || value.alertsEnabled || value.alertConsoleEnabled {
		t.Fatalf("default alert configuration: %+v %v", value, err)
	}
	t.Setenv("BELL_ALERTS_ENABLED", "true")
	if _, err := loadConfiguration(); err == nil {
		t.Fatal("alerts without an external rule file were accepted")
	}
	t.Setenv("BELL_ALERT_RULES_FILE", filepath.Join(t.TempDir(), "rules.json"))
	t.Setenv("BELL_ALERT_CONSOLE_ENABLED", "true")
	if _, err := loadConfiguration(); err == nil {
		t.Fatal("console without external context was accepted")
	}
	t.Setenv("BELL_ALERT_CONSOLE_TOKEN_FILE", filepath.Join(t.TempDir(), "token"))
	t.Setenv("BELL_ALERT_CONSOLE_TENANT_ID", "1")
	t.Setenv("BELL_ALERT_CONSOLE_SITE_ID", "2")
	t.Setenv("BELL_ALERT_CONSOLE_ACTOR_REF", "operator:local")
	t.Setenv("BELL_HTTP_ADDR", "127.0.0.1:8081")
	value, err = loadConfiguration()
	if err != nil || !value.alertsEnabled || !value.alertConsoleEnabled {
		t.Fatalf("valid alert console configuration: %+v %v", value, err)
	}
}

func TestLoadConsoleToken(t *testing.T) {
	path := filepath.Join(t.TempDir(), "token")
	if err := os.WriteFile(path, []byte("12345678901234567890123456789012\n"), 0o600); err != nil {
		t.Fatal(err)
	}
	if value, err := loadConsoleToken(path); err != nil || len(value) != 32 {
		t.Fatalf("valid token: %q %v", value, err)
	}
	if err := os.WriteFile(path, []byte("short"), 0o600); err != nil {
		t.Fatal(err)
	}
	if _, err := loadConsoleToken(path); err == nil {
		t.Fatal("short token was accepted")
	}
}

func TestConfigurationRequiresTLSOutsideLoopback(t *testing.T) {
	t.Setenv("BELL_DB_DSN", "postgres://bell@127.0.0.1/yovision")
	t.Setenv("BELL_AUDIT_KEYS_FILE", filepath.Join(t.TempDir(), "keys.json"))
	t.Setenv("BELL_HTTP_ADDR", "0.0.0.0:8081")
	if _, err := loadConfiguration(); err == nil {
		t.Fatal("remote plaintext Bell bind was accepted")
	}
	t.Setenv("BELL_TLS_CERT_FILE", filepath.Join(t.TempDir(), "server.crt"))
	t.Setenv("BELL_TLS_KEY_FILE", filepath.Join(t.TempDir(), "server.key"))
	if _, err := loadConfiguration(); err != nil {
		t.Fatalf("remote TLS Bell bind rejected: %v", err)
	}
}

func TestEventIngressIsDisabledByDefaultAndRequiresExternalPolicy(t *testing.T) {
	t.Setenv("BELL_DB_DSN", "postgres://bell@127.0.0.1/yovision")
	t.Setenv("BELL_AUDIT_KEYS_FILE", filepath.Join(t.TempDir(), "audit.json"))
	t.Setenv("BELL_EVENT_INGRESS_ENABLED", "")
	value, err := loadConfiguration()
	if err != nil || value.eventIngressEnabled {
		t.Fatalf("default event ingress configuration: %+v %v", value, err)
	}
	t.Setenv("BELL_EVENT_INGRESS_ENABLED", "true")
	if _, err := loadConfiguration(); err == nil {
		t.Fatal("event ingress without keys and evidence policy was accepted")
	}
	t.Setenv("BELL_EVENT_INGRESS_KEYS_FILE", filepath.Join(t.TempDir(), "event-keys.json"))
	t.Setenv("BELL_EVIDENCE_FORBIDDEN_NAMES_FILE", filepath.Join(t.TempDir(), "names.txt"))
	value, err = loadConfiguration()
	if err != nil || !value.eventIngressEnabled {
		t.Fatalf("valid event ingress configuration rejected: %+v %v", value, err)
	}
}