package common

import (
	"encoding/json"
	"os"
	"testing"
)

func TestSaveNewInventoryItemsInitializesMissingCollections(t *testing.T) {
	t.Chdir(t.TempDir())
	if err := os.WriteFile("freesr-data.json", []byte(`{"account_name":"test-player","player_uid":52022}`), 0600); err != nil {
		t.Fatal(err)
	}

	if err := SaveNewLightcones([]Lightcone{{ItemID: 23001, InternalUID: 1, Level: 1, Rank: 1}}); err != nil {
		t.Fatalf("SaveNewLightcones: %v", err)
	}
	if err := SaveNewRelics([]Relic{{RelicID: 31001, RelicSetID: 3101, MainAffixID: 1, InternalUID: 2}}); err != nil {
		t.Fatalf("SaveNewRelics: %v", err)
	}

	raw, err := os.ReadFile("freesr-data.json")
	if err != nil {
		t.Fatal(err)
	}
	var saved struct {
		AccountName string      `json:"account_name"`
		PlayerUID   uint32      `json:"player_uid"`
		Lightcones  []Lightcone `json:"lightcones"`
		Relics      []Relic     `json:"relics"`
	}
	if err := json.Unmarshal(raw, &saved); err != nil {
		t.Fatal(err)
	}
	if saved.AccountName != "test-player" || saved.PlayerUID != 52022 {
		t.Fatalf("account fields were not preserved: %+v", saved)
	}
	if len(saved.Lightcones) != 1 || saved.Lightcones[0].ItemID != 23001 {
		t.Fatalf("missing Light Cone was not initialized: %+v", saved.Lightcones)
	}
	if len(saved.Relics) != 1 || saved.Relics[0].RelicID != 31001 {
		t.Fatalf("missing Relic collection was not initialized: %+v", saved.Relics)
	}
}

func TestReadInventoryEntriesTreatsNullAsEmptyAndRejectsMalformed(t *testing.T) {
	for _, root := range []map[string]json.RawMessage{
		{}, {"lightcones": json.RawMessage("null")},
	} {
		entries, err := readInventoryEntries(root, "lightcones")
		if err != nil || len(entries) != 0 {
			t.Fatalf("expected empty collection, got entries=%v err=%v", entries, err)
		}
	}
	if _, err := readInventoryEntries(map[string]json.RawMessage{"lightcones": json.RawMessage(`{"not":"an array"}`)}, "lightcones"); err == nil {
		t.Fatal("malformed inventory collection was accepted")
	}
}