package console

import (
	"context"
	"encoding/json"
	"net/http"
	"testing"

	"github.com/carlosframework/platform/internal/release"
)

func metaPartSwap(t *testing.T, version, swap string) shipPart {
	t.Helper()
	raw, err := json.Marshal(map[string]string{"version": version, "kind": "binary", "swap": swap})
	if err != nil {
		t.Fatal(err)
	}
	return shipPart{name: "meta", body: raw}
}

func TestAPIShipStoresTheSwapDemand(t *testing.T) {
	fx := newConsoleFixture(t)
	liftShipBudget(fx)
	token := cliToken(t, fx, "paul@keymail.dev", "code-ship-swap")
	u := fx.ts.URL + "/api/cli/apps/" + fx.sqid + "/kass/releases"
	art := shipPart{name: "linux-arm64", body: randomBytes(t, 64)}

	code, out := postShip(t, u, token, []shipPart{metaPartSwap(t, "v9", "hold"), art})
	if code != http.StatusCreated || out["swap"] != "hold" {
		t.Fatalf("ship = %d %v, want 201 echoing swap hold", code, out)
	}
	m, err := release.GetManifest(context.Background(), fx.rel, fx.sqid, "kass", "v9")
	if err != nil || m.Swap != release.DemandHold {
		t.Fatalf("stored manifest swap = %q, %v", m.Swap, err)
	}
	if code, out = postShip(t, u, token, []shipPart{metaPartSwap(t, "v9", "hold"), art}); code != http.StatusOK || out["swap"] != "hold" {
		t.Fatalf("identical re-ship = %d %v", code, out)
	}
	if code, out = postShip(t, u, token, []shipPart{metaPart(t, "v9", "binary"), art}); code != http.StatusConflict {
		t.Fatalf("re-ship without the demand = %d %v, want 409", code, out)
	}
}

func TestAPIShipRefusesAnyOtherDemand(t *testing.T) {
	fx := newConsoleFixture(t)
	liftShipBudget(fx)
	token := cliToken(t, fx, "paul@keymail.dev", "code-ship-swap-bad")
	u := fx.ts.URL + "/api/cli/apps/" + fx.sqid + "/kass/releases"
	for _, bad := range []string{"overlap", "fast", "HOLD"} {
		code, out := postShip(t, u, token, []shipPart{metaPartSwap(t, "v10", bad), {name: "linux-arm64", body: randomBytes(t, 8)}})
		if code != http.StatusBadRequest {
			t.Errorf("swap %q = %d %v, want 400", bad, code, out)
		}
	}
	if _, err := release.GetManifest(context.Background(), fx.rel, fx.sqid, "kass", "v10"); err == nil {
		t.Fatal("a refused ship stored a manifest")
	}
}

func TestAPIShipWithoutSwapAnswersAsBefore(t *testing.T) {
	fx := newConsoleFixture(t)
	liftShipBudget(fx)
	token := cliToken(t, fx, "paul@keymail.dev", "code-ship-noswap")
	u := fx.ts.URL + "/api/cli/apps/" + fx.sqid + "/kass/releases"
	code, out := postShip(t, u, token, []shipPart{metaPart(t, "v11", "binary"), {name: "linux-arm64", body: randomBytes(t, 8)}})
	if code != http.StatusCreated {
		t.Fatalf("ship = %d %v", code, out)
	}
	if _, present := out["swap"]; present {
		t.Fatalf("a ship with no demand echoes swap: %v", out)
	}
}

func TestAPIShipRefusesAddingTheDemandOnAReship(t *testing.T) {
	fx := newConsoleFixture(t)
	liftShipBudget(fx)
	token := cliToken(t, fx, "paul@keymail.dev", "code-ship-swap-add")
	u := fx.ts.URL + "/api/cli/apps/" + fx.sqid + "/kass/releases"
	art := shipPart{name: "linux-arm64", body: randomBytes(t, 64)}

	if code, out := postShip(t, u, token, []shipPart{metaPart(t, "v12", "binary"), art}); code != http.StatusCreated {
		t.Fatalf("ship = %d %v", code, out)
	}
	code, out := postShip(t, u, token, []shipPart{metaPart(t, "v12", "binary"), art})
	if code != http.StatusOK {
		t.Fatalf("identical no-demand re-ship = %d %v, want 200", code, out)
	}
	if _, present := out["swap"]; present {
		t.Fatalf("a re-ship with no demand echoes swap: %v", out)
	}
	if code, out = postShip(t, u, token, []shipPart{metaPartSwap(t, "v12", "hold"), art}); code != http.StatusConflict {
		t.Fatalf("re-ship adding the demand = %d %v, want 409", code, out)
	}
	m, err := release.GetManifest(context.Background(), fx.rel, fx.sqid, "kass", "v12")
	if err != nil || m.Swap != "" {
		t.Fatalf("stored manifest swap = %q, %v, want it unchanged", m.Swap, err)
	}
}