package check

import (
	"context"
	"strings"
	"testing"
	"time"

	"git.novox.be/novox/mesh-sdk/go/delivery"
)

var at0 = time.Date(2026, 10, 21, 19, 0, 0, 0, time.UTC)

const (
	digA = "aa11aa11aa11aa11aa11aa11aa11aa11aa11aa11aa11aa11aa11aa11aa11aa11"
	digB = "bb22bb22bb22bb22bb22bb22bb22bb22bb22bb22bb22bb22bb22bb22bb22bb22"
)

func keptValue(pkg string, tests int) delivery.Kept {
	return delivery.Kept{State: delivery.VerdictPass, Repository: "novox/mesh-delivery", Package: pkg, Tests: tests, Took: 120, Toolchain: "go1.26.0", At: at0}
}

func TestAPassIsKeptByACreateUnderItsLevelAndDigest(t *testing.T) { // 1287/AC1
	ctx, st := context.Background(), newMemKV()
	k := Kept{Store: st}
	made, err := k.Keep(ctx, delivery.LevelUnit, digA, keptValue("m/a", 3))
	if err != nil || !made {
		t.Fatalf("Keep = %v, %v, want made", made, err)
	}
	key, _ := delivery.KeptKey(delivery.LevelUnit, digA)
	if st.creates[key] != 1 {
		t.Fatalf("the key %s was created %d times, want once", key, st.creates[key])
	}
	got, found, err := k.Lookup(ctx, delivery.LevelUnit, digA)
	if err != nil || !found || got.Package != "m/a" || got.Tests != 3 || got.Level != delivery.LevelUnit || got.Toolchain != "go1.26.0" {
		t.Fatalf("Lookup = %+v, %v, %v", got, found, err)
	}
}

func TestASecondKeepUnderTheSameDigestIsRefusedAndTheFirstStands(t *testing.T) { // 1287/AC2
	ctx, st := context.Background(), newMemKV()
	k := Kept{Store: st}
	if made, err := k.Keep(ctx, delivery.LevelUnit, digA, keptValue("m/a", 3)); err != nil || !made {
		t.Fatal(made, err)
	}
	made, err := k.Keep(ctx, delivery.LevelUnit, digA, keptValue("m/other", 9))
	if err != nil || made {
		t.Fatalf("the second Keep = %v, %v, want refused without an error", made, err)
	}
	got, _, _ := k.Lookup(ctx, delivery.LevelUnit, digA)
	if got.Package != "m/a" || got.Tests != 3 {
		t.Errorf("the first value did not stand: %+v", got)
	}
}

func TestOnlyPassingPackagesWithADigestAreKept(t *testing.T) { // 1287/AC3, AC4
	ctx, st := context.Background(), newMemKV()
	k := Kept{Store: st}
	res := Tested{Level: "unit", Passed: false, Packages: []GoPackage{
		{Package: "m/a", Passed: true, Tests: 4, Elapsed: 0.2},
		{Package: "m/b", Passed: false, Tests: 2},
		{Package: "m/c", Passed: true, Tests: 1},      // no digest named
		{Package: "m/d", Passed: true, NoTests: true}, // no tests
	}, Failed: []Failure{{Package: "m/b", Test: "TestB"}}}
	kept, err := k.KeepPasses(ctx, "novox/mesh-delivery", "unit", "go1.26.0", res, map[string]string{"m/a": digA, "m/b": digB, "m/d": digB}, at0)
	if err != nil {
		t.Fatal(err)
	}
	if strings.Join(kept, ",") != "m/a" {
		t.Fatalf("kept %v, want only m/a", kept)
	}
	if keys, _ := st.Keys(ctx); len(keys) != 1 {
		t.Errorf("the bucket holds %v, want one key", keys)
	}
}

func TestAKeptValueOfAnotherDigestIsNotRead(t *testing.T) { // 1287/AC7
	ctx, st := context.Background(), newMemKV()
	k := Kept{Store: st}
	if _, err := k.Keep(ctx, delivery.LevelUnit, digA, keptValue("m/a", 3)); err != nil {
		t.Fatal(err)
	}
	// A toolchain change changes the digest, so the new digest finds nothing and the old key is not deleted.
	if _, found, _ := k.Lookup(ctx, delivery.LevelUnit, digB); found {
		t.Error("a digest that was not kept was found")
	}
	if _, found, _ := k.Lookup(ctx, delivery.LevelIntegration, digA); found {
		t.Error("a kept unit verdict was found at the integration level")
	}
	if keys, _ := st.Keys(ctx); len(keys) != 1 {
		t.Errorf("the old key was removed: %v", keys)
	}
}

func TestAKeptVerdictThatIsNotAPassIsRefused(t *testing.T) {
	k := Kept{Store: newMemKV()}
	v := keptValue("m/a", 1)
	v.State = delivery.VerdictFail
	if _, err := k.Keep(context.Background(), delivery.LevelUnit, digA, v); err == nil {
		t.Error("a failure was kept")
	}
}