package log_test

import (
	"bytes"
	"encoding/json"
	"strings"
	"testing"

	brokerlog "kode.naiv.no/olemd/forgejo-mcp-broker/internal/log"
)

func TestNew_WritesJSON(t *testing.T) {
	var buf bytes.Buffer
	l := brokerlog.New(&buf, false)
	l.Info("hello", "key", "value")

	var rec map[string]any
	if err := json.Unmarshal(buf.Bytes(), &rec); err != nil {
		t.Fatalf("output is not valid JSON: %v\ngot: %s", err, buf.String())
	}
	if rec["msg"] != "hello" {
		t.Errorf("msg = %v, want hello", rec["msg"])
	}
	if rec["service"] != "fjmcp-broker" {
		t.Errorf("service = %v, want fjmcp-broker", rec["service"])
	}
	if rec["key"] != "value" {
		t.Errorf("key = %v, want value", rec["key"])
	}
}

func TestNew_DebugSuppressedByDefault(t *testing.T) {
	var buf bytes.Buffer
	l := brokerlog.New(&buf, false)
	l.Debug("debug-only")
	if buf.Len() > 0 {
		t.Errorf("debug record should be suppressed at info level, got: %s", buf.String())
	}
}

func TestNew_DebugIncludedWhenEnabled(t *testing.T) {
	var buf bytes.Buffer
	l := brokerlog.New(&buf, true)
	l.Debug("debug-enabled")
	if !strings.Contains(buf.String(), "debug-enabled") {
		t.Errorf("debug record missing with debug=true, got: %s", buf.String())
	}
}

func TestDiscard_NoOutput(t *testing.T) {
	l := brokerlog.Discard()
	l.Info("ignored")
	l.Error("also ignored")
	// Nothing to assert except that these calls don't panic.
}