package inventory

import (
	"context"
	"fmt"
	"testing"

	"github.com/novox/mesh-controller/internal/catalogue"
)

// **Every artifact made has one state, and a kept one says why** (novox/hq ADR 0251): what the
// store's own tools set beside what the store holds, so an operator reads why something stays.
func TestEveryArtifactMadeHasAStateAndAKeptOneSaysWhy(t *testing.T) {
	inv := fresh(t)
	ctx := context.Background()
	var made []string
	for i := 1; i <= 8; i++ {
		made = append(made, built(t, inv, fmt.Sprintf("b%02d", i), "web", i))
	}
	// The definition names the oldest and the newest: the newest is kept for both reasons.
	m := catalogue.Manifest{Module: "web", Version: "1", Resources: []map[string]any{
		{"id": "app", "type": "container", "name": "web", "image": made[0]},
		{"id": "next", "type": "container", "name": "web-next", "image": made[7]},
	}}
	if err := inv.RegisterModule(ctx, m, Source{Repository: "https://forge.invalid/web.git"}); err != nil {
		t.Fatal(err)
	}
	if err := inv.MarkCollected(ctx, []string{made[1]}); err != nil {
		t.Fatal(err)
	}
	states, err := inv.Artifacts(ctx)
	if err != nil {
		t.Fatal(err)
	}
	if len(states) != len(made) {
		t.Fatalf("%d states for %d artifacts made", len(states), len(made))
	}
	want := []struct {
		state string
		why   []string
	}{
		{ArtifactKept, []string{KeptByDefinition}},
		{ArtifactCollected, nil},
		{ArtifactEligible, nil},
		{ArtifactKept, []string{KeptByRecentBuild}},
		{ArtifactKept, []string{KeptByRecentBuild}},
		{ArtifactKept, []string{KeptByRecentBuild}},
		{ArtifactKept, []string{KeptByRecentBuild}},
		{ArtifactKept, []string{KeptByRecentBuild, KeptByDefinition}},
	}
	for i, s := range states {
		if s.Reference != made[i] {
			t.Fatalf("state %d is of %s, want %s: the oldest first", i, s.Reference, made[i])
		}
		if s.State != want[i].state || fmt.Sprint(s.Why) != fmt.Sprint(want[i].why) {
			t.Errorf("%s: %s %v, want %s %v", s.Reference, s.State, s.Why, want[i].state, want[i].why)
		}
	}
	collect, err := inv.ToCollect(ctx)
	if err != nil {
		t.Fatal(err)
	}
	if len(collect) != 1 || collect[0] != made[2] {
		t.Errorf("ToCollect is %v, want only the eligible %s", collect, made[2])
	}
}