package build

import (
	"errors"

	"git.novox.be/novox/mesh-sdk/go/delivery"
	"git.novox.be/novox/mesh-sdk/go/delivery/buildrun"
	"strings"
	"testing"

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

// manifestOf is a manifest holding these artifacts: the plan reads only their name, kind and language.
func manifestOf(artifacts ...catalogue.Artifact) catalogue.Manifest {
	return catalogue.Manifest{Module: "m", Build: &catalogue.Build{Artifacts: artifacts}}
}

func TestPlanRoutesEachKindToItsBuildModule(t *testing.T) { // 1607/AC2
	m := manifestOf(
		catalogue.Artifact{Name: "tool", Kind: "bundle", Language: "go"},
		catalogue.Artifact{Name: "web", Kind: "bundle", Language: "typescript"},
		catalogue.Artifact{Name: "files", Kind: "archive"})
	p, err := PlanOf(m)
	if err != nil {
		t.Fatal(err)
	}
	want := []Task{
		{Artifact: "files", Kind: "archive", Module: buildrun.GoBuildModule, Language: "go"},
		{Artifact: "tool", Kind: "bundle", Module: buildrun.GoBuildModule, Language: "go"},
		{Artifact: "web", Kind: "bundle", Module: buildrun.NodeBuildModule, Language: "typescript"},
	}
	if len(p.Tasks) != len(want) {
		t.Fatalf("tasks = %+v, want %+v", p.Tasks, want)
	}
	for i := range want {
		if p.Tasks[i] != want[i] {
			t.Errorf("task %d = %+v, want %+v", i, p.Tasks[i], want[i])
		}
	}
	if modules := p.Modules(); len(modules) != 2 || modules[0] != buildrun.GoBuildModule || modules[1] != buildrun.NodeBuildModule {
		t.Errorf("modules = %v", modules)
	}
}

const pinned = "nats:2.11.17-alpine@sha256:3333333333333333333333333333333333333333333333333333333333333333"

func TestPlanSendsAPinnedUpstreamToTheImageBuildModulesCopyAndRefusesAnUnpinnedOne(t *testing.T) { // B3, ADR 0498 clause 4
	p, err := PlanOf(manifestOf(catalogue.Artifact{Name: "ok", Kind: "archive"}, catalogue.Artifact{Name: "up", Kind: "upstream", From: pinned}))
	if err != nil || len(p.Tasks) != 2 {
		t.Fatalf("plan %+v, error %v", p, err)
	}
	if up := p.Tasks[1]; up.Artifact != "up" || up.Kind != "upstream" || up.Module != ImageBuildModule || up.From != pinned || up.Language != "" {
		t.Errorf("task = %+v, want the upstream sent to %s with its pinned reference and no toolchain", up, ImageBuildModule)
	}
	if p.NeedsToolchain(ImageBuildModule) {
		t.Error("a copy needs no toolchain")
	}
	_, err = PlanOf(manifestOf(catalogue.Artifact{Name: "up", Kind: "upstream", From: "nats:2.11.17-alpine"}))
	if err == nil || !strings.HasPrefix(err.Error(), delivery.NotPinned+"up") || !delivery.FailedUntilChanged(err.Error()) {
		t.Errorf("an upstream with no digest: error = %v, want it to open %q naming the artifact", err, delivery.NotPinned)
	}
}

func TestPlanRefusesAPackageOfAnotherLanguageByName(t *testing.T) { // ADR 0498 clause 5
	_, err := PlanOf(manifestOf(catalogue.Artifact{Name: "ok", Kind: "archive"}, catalogue.Artifact{Name: "pkg", Kind: "package", Language: "python"}))
	var r *Refused
	if err == nil || !asRefused(err, &r) || !strings.HasPrefix(err.Error(), delivery.RefusedKind) || !strings.Contains(err.Error(), "python") || !strings.Contains(err.Error(), "pkg") {
		t.Errorf("error = %v, want it to open %q naming the artifact and its language", err, delivery.RefusedKind)
	}
}

func TestPlanRefusesABundleOfAnotherLanguageAndAModuleWithNoArtifact(t *testing.T) {
	if _, err := PlanOf(manifestOf(catalogue.Artifact{Name: "x", Kind: "bundle", Language: "python"})); err == nil || !strings.HasPrefix(err.Error(), delivery.RefusedKind) {
		t.Errorf("a python bundle: error = %v, want a refusal", err)
	}
	p, err := PlanOf(manifestOf())
	if err != nil || len(p.Tasks) != 0 {
		t.Errorf("no artifact: plan %+v error %v, want an empty plan", p, err)
	}
}

func asRefused(err error, target **Refused) bool { return errors.As(err, target) }

func TestPlanSendsAnImageToMeshBuildImageWithNoToolchain(t *testing.T) { // 1705a, ADR 0487 clause 5
	p, err := PlanOf(manifestOf(catalogue.Artifact{Name: "img", Kind: "image"}, catalogue.Artifact{Name: "files", Kind: "archive"}))
	if err != nil || len(p.Tasks) != 2 {
		t.Fatalf("plan %+v, error %v", p, err)
	}
	if p.Tasks[1].Artifact != "img" || p.Tasks[1].Module != ImageBuildModule {
		t.Errorf("task = %+v, want the image on %s", p.Tasks[1], ImageBuildModule)
	}
	if p.NeedsToolchain(ImageBuildModule) {
		t.Error("an image needs no toolchain")
	}
}