package alert

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

func TestLoadRulesRejectsUnknownAndDuplicateValues(t *testing.T) {
	path := filepath.Join(t.TempDir(), "rules.json")
	valid := `{"version":1,"rules":[{"tenant_id":1,"site_id":2,"rule_key":"zone-entry","display_name":"区域闯入","event_kind":"zone_entry","minimum_severity":"medium","enabled":true,"effective_from":"2026-08-11T00:00:00Z"}]}`
	if err := os.WriteFile(path, []byte(valid), 0o600); err != nil {
		t.Fatal(err)
	}
	rules, err := LoadRules(path)
	if err != nil || len(rules) != 1 {
		t.Fatalf("load valid rules: %v %#v", err, rules)
	}
	if err := os.WriteFile(path, []byte(`{"version":1,"unknown":true,"rules":[]}`), 0o600); err != nil {
		t.Fatal(err)
	}
	if _, err := LoadRules(path); err == nil {
		t.Fatal("unknown rule document property was accepted")
	}
	if err := os.WriteFile(path, []byte(valid+` trailing`), 0o600); err != nil {
		t.Fatal(err)
	}
	if _, err := LoadRules(path); err == nil {
		t.Fatal("trailing rule file data was accepted")
	}
}

func TestSeverityRankIsStable(t *testing.T) {
	for index, value := range []string{"low", "medium", "high", "critical"} {
		rank, ok := SeverityRank(value)
		if !ok || rank != index {
			t.Fatalf("rank %q: %d %v", value, rank, ok)
		}
	}
	if _, ok := SeverityRank("urgent"); ok {
		t.Fatal("unknown severity was accepted")
	}
}