package engine

import (
	"testing"

	"aiaa-notification-service/internal/model"
)

func TestPickEventRuleExact(t *testing.T) {
	rules := []model.Rule{
		{ID: 1, Event: "trade.*", Enabled: 1},
		{ID: 2, Event: "trade.open", Enabled: 1},
	}
	got := PickEventRule("trade.open", rules)
	if got == nil || got.ID != 2 {
		t.Fatalf("want exact id=2, got %#v", got)
	}
}

func TestPickEventRuleWildcard(t *testing.T) {
	rules := []model.Rule{
		{ID: 1, Event: "trade.*", Enabled: 1},
	}
	got := PickEventRule("trade.close", rules)
	if got == nil || got.Event != "trade.*" {
		t.Fatalf("want trade.*, got %#v", got)
	}
	if PickEventRule("order.open", rules) != nil {
		t.Fatal("trade.* must not match order.open")
	}
}

func TestPickEventRuleMoreSpecificWildcardWins(t *testing.T) {
	rules := []model.Rule{
		{ID: 1, Event: "*", Enabled: 1},
		{ID: 2, Event: "trade.*", Enabled: 1},
	}
	got := PickEventRule("trade.open", rules)
	if got == nil || got.ID != 2 {
		t.Fatalf("want trade.* id=2, got %#v", got)
	}
}

func TestPickEventRuleSkipsDisabled(t *testing.T) {
	rules := []model.Rule{
		{ID: 1, Event: "trade.*", Enabled: 0},
		{ID: 2, Event: "*", Enabled: 1},
	}
	got := PickEventRule("trade.open", rules)
	if got == nil || got.ID != 2 {
		t.Fatalf("want * id=2, got %#v", got)
	}
}

func TestPickEventRuleNoMatch(t *testing.T) {
	rules := []model.Rule{
		{ID: 1, Event: "trade.open", Enabled: 1},
	}
	if PickEventRule("trade.close", rules) != nil {
		t.Fatal("expected no match")
	}
}

func TestPickEventRulesAllExactMatches(t *testing.T) {
	rules := []model.Rule{
		{ID: 12, Event: "trade.*", Enabled: 1},
		{ID: 17, Event: "trade.close", Enabled: 1},
		{ID: 18, Event: "trade.close", Enabled: 1},
		{ID: 19, Event: "trade.close", Enabled: 0},
	}
	got := PickEventRules("trade.close", rules)
	if len(got) != 2 {
		t.Fatalf("want 2 exact trade.close, got %#v", got)
	}
	ids := []int{got[0].ID, got[1].ID}
	if ids[0] != 17 || ids[1] != 18 {
		t.Fatalf("ids=%v", ids)
	}
}

func TestPickEventRulesSameGlobBoth(t *testing.T) {
	rules := []model.Rule{
		{ID: 1, Event: "trade.*", Enabled: 1},
		{ID: 2, Event: "trade.*", Enabled: 1},
		{ID: 3, Event: "*", Enabled: 1},
	}
	got := PickEventRules("trade.open", rules)
	if len(got) != 2 {
		t.Fatalf("want both trade.*, got %#v", got)
	}
}