package stacks

import (
	"errors"
	"io"
	"log"
	"path/filepath"
	"strings"
	"testing"

	"gitea.dooplex.hu/admin/felhom-controller/internal/settings"
)

// D4 (felhom.eu architecture/16-storage-physical-identity.md §5, R-1068): a data-folder or media app on a
// box with NO drive is refused in words with the way forward — never the field name, never sys_drive.
// COMPANION RED-PROOF: delete the D4 branch in deploy.go → the plain required-field refusal comes back
// („a(z) "Médiatár útvonal" (HDD_PATH) mező kitöltése kötelező", the OMV test's sentence) and this fails.
func TestD4_NoDriveRefusalSpeaksInWords(t *testing.T) {
	for name, yml := range map[string]string{
		"media app":       "display_name: Jellyfin\nmedia_library:\n  folder: films\ndeploy_fields:\n  - env_var: HDD_PATH\n    label: Médiatár útvonal\n    type: path\n    required: true\n",
		"data-folder app": "display_name: Paperless\ndeploy_fields:\n  - env_var: HDD_PATH\n    label: Adattárolási útvonal\n    type: path\n    required: true\n",
	} {
		t.Run(name, func(t *testing.T) {
			m := r553Manager(t, yml)
			_, err := m.DeployStack(DeployRequest{StackName: "r553app", Values: map[string]string{}})
			if err == nil {
				t.Fatal("deploy was admitted on a box with no drive")
			}
			if !errors.Is(err, ErrNeedsDrive) {
				t.Fatalf("want ErrNeedsDrive, got %v", err)
			}
			msg := err.Error()
			if msg != "Ehhez az alkalmazáshoz egy adattároló kell. A Meghajtók oldalon adhatsz hozzá egyet." {
				t.Errorf("the D4 sentence moved: %q", msg)
			}
			for _, bad := range []string{"HDD_PATH", "útvonal", "sys_drive", "kötelező"} {
				if strings.Contains(msg, bad) {
					t.Errorf("the refusal names %q — it must speak in words, not fields: %q", bad, msg)
				}
			}
		})
	}
}

// A path field the household FILLED is not a D4 case: a missing path keeps its own refusal.
func TestD4_FilledPathKeepsItsOwnRefusal(t *testing.T) {
	m := r553Manager(t, "display_name: X\ndeploy_fields:\n  - env_var: HDD_PATH\n    label: Adat\n    type: path\n    required: true\n")
	_, err := m.DeployStack(DeployRequest{StackName: "r553app", Values: map[string]string{"HDD_PATH": "/definitely/not/here/d4"}})
	if !errors.Is(err, ErrPathMissing) {
		t.Fatalf("want ErrPathMissing for a filled, missing path, got %v", err)
	}
}

// `16` §5 (v0.318.0): on a one-disk box with the internal place registered, a media app installs with NO extra step
// and NO sentence — its HDD_PATH lands on the internal place. Companion of TestD4_NoDriveRefusalSpeaksInWords (the
// same app, no drive → the refusal).
func TestD4_InternalPlaceIsTheMediaAppsDrive(t *testing.T) {
	m := r553Manager(t, "display_name: Jellyfin\nmedia_library:\n  folder: films\ndeploy_fields:\n  - env_var: HDD_PATH\n    label: Médiatár útvonal\n    type: path\n    required: true\n")
	sett, err := settings.Load(filepath.Join(t.TempDir(), "settings.json"), log.New(io.Discard, "", 0))
	if err != nil {
		t.Fatal(err)
	}
	belso := filepath.Join(t.TempDir(), "belso")
	if err := sett.AddStoragePath(settings.StoragePath{Path: belso, IsDefault: true, Schedulable: true, Kind: settings.StorageKindInternal}); err != nil {
		t.Fatal(err)
	}
	m.settings = sett
	m.isMountPoint = func(p string) bool { return filepath.Clean(p) == belso }
	if got := m.defaultMediaDrive(); got != belso {
		t.Fatalf("the default media drive: want the internal place %q, got %q", belso, got)
	}
	// The folder is deliberately NOT created: the deploy then stops at its path check, so no real `docker compose`
	// can ever start on the machine running this test (tests that reach real docker act on DooPlex, R-650). The
	// refusal naming the internal place proves HDD_PATH was filled with it — the step the household no longer does.
	_, err = m.DeployStack(DeployRequest{StackName: "r553app", Values: map[string]string{}})
	if errors.Is(err, ErrNeedsDrive) {
		t.Fatalf("a box with the internal place must not be told it needs a drive: %v", err)
	}
	if !errors.Is(err, ErrPathMissing) || !strings.Contains(err.Error(), belso) {
		t.Fatalf("want the media app's HDD_PATH filled with the internal place %q, got %v", belso, err)
	}
}