package api

import (
	"encoding/json"
	"go/ast"
	"go/parser"
	"go/token"
	"io"
	"log"
	"os"
	"path/filepath"
	"testing"

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

// R-552: an interrupted-restore notice was cleared only by a NEW restore of the same app, so a
// household that answered it by REMOVING the app kept a „Megszakadt visszaállítás" card about an app
// that no longer exists — for ever, because the notice is persisted. The consequence asserted: after
// the removal path's clear, the notice is gone from the page's list AND from the persisted record (a
// fresh Manager loading the file sees none), while another app's notice stays.
// COMPANION RED-PROOF: drop the clearInterruptedRestoreNotice call from removeStack → the AST check
// fails; make ClearInterruptedRestore a no-op → the notice is still listed.
func TestR552_RemoveClearsTheInterruptedRestoreNotice(t *testing.T) {
	dir := t.TempDir()
	cfg := &config.Config{}
	cfg.Paths.DataDir = dir
	lg := log.New(io.Discard, "", 0)
	sett, err := settings.Load(filepath.Join(dir, "settings.json"), lg)
	if err != nil {
		t.Fatal(err)
	}
	recPath := filepath.Join(dir, "restore-status.json")
	// The record two stops left behind: "otherapp" already carries a notice, "homebox" was running.
	seed := map[string]any{
		"running": true, "op": "restore", "stack": "homebox",
		"interrupted": map[string]any{"otherapp": map[string]any{"op": "restore", "stack": "otherapp", "interrupted": true}},
	}
	b, _ := json.Marshal(seed)
	if err := os.WriteFile(recPath, b, 0o600); err != nil {
		t.Fatal(err)
	}
	load := func() *backup.Manager {
		bm := backup.NewManager(cfg, sett, lg)
		bm.SetRestoreRecordPath(recPath)
		bm.LoadRestoreRecord()
		return bm
	}
	bm := load()
	if _, ok := bm.InterruptedRestore("homebox"); !ok {
		t.Fatal("setup: no interrupted notice for homebox")
	}

	r := &Router{backupMgr: bm, logger: lg}
	r.clearInterruptedRestoreNotice("homebox")

	if _, ok := bm.InterruptedRestore("homebox"); ok {
		t.Errorf("R-552: the removed app's interrupted-restore notice is still listed")
	}
	if _, ok := bm.InterruptedRestore("otherapp"); !ok {
		t.Errorf("another app's notice was cleared by this app's removal")
	}
	again := load()
	if _, ok := again.InterruptedRestore("homebox"); ok {
		t.Errorf("R-552: the notice comes back after a restart — the clear was not persisted")
	}

	fset := token.NewFileSet()
	f, err := parser.ParseFile(fset, "router.go", nil, 0)
	if err != nil {
		t.Fatal(err)
	}
	called := false
	for _, d := range f.Decls {
		if fn, ok := d.(*ast.FuncDecl); ok && fn.Name.Name == "removeStack" && fn.Body != nil {
			ast.Inspect(fn.Body, func(n ast.Node) bool {
				if s, ok := n.(*ast.SelectorExpr); ok && s.Sel.Name == "clearInterruptedRestoreNotice" {
					called = true
				}
				return true
			})
		}
	}
	if !called {
		t.Errorf("R-552: removeStack does not call clearInterruptedRestoreNotice")
	}
}