package collections

import (
	"testing"

	"eq2emu/internal/database"
)

func TestNew(t *testing.T) {
	db, err := database.NewSQLite("file::memory:?mode=memory&cache=shared")
	if err != nil {
		t.Fatalf("Failed to create test database: %v", err)
	}
	defer db.Close()

	// Test creating a new collection
	collection := New(db)
	if collection == nil {
		t.Fatal("New returned nil")
	}

	if !collection.IsNew() {
		t.Error("New collection should be marked as new")
	}

	if len(collection.CollectionItems) != 0 {
		t.Error("New collection should have empty items slice")
	}

	if len(collection.RewardItems) != 0 {
		t.Error("New collection should have empty reward items slice")
	}
}

func TestNewWithData(t *testing.T) {
	db, err := database.NewSQLite("file::memory:?mode=memory&cache=shared")
	if err != nil {
		t.Fatalf("Failed to create test database: %v", err)
	}
	defer db.Close()

	collection := NewWithData(100, "Test Collection", "Heritage", 20, db)
	if collection == nil {
		t.Fatal("NewWithData returned nil")
	}

	if collection.GetID() != 100 {
		t.Errorf("Expected ID 100, got %d", collection.GetID())
	}

	if collection.GetName() != "Test Collection" {
		t.Errorf("Expected name 'Test Collection', got '%s'", collection.GetName())
	}

	if collection.GetCategory() != "Heritage" {
		t.Errorf("Expected category 'Heritage', got '%s'", collection.GetCategory())
	}

	if collection.GetLevel() != 20 {
		t.Errorf("Expected level 20, got %d", collection.GetLevel())
	}

	if !collection.IsNew() {
		t.Error("NewWithData should create new collection")
	}
}

func TestCollectionItems(t *testing.T) {
	db, _ := database.NewSQLite("file::memory:?mode=memory&cache=shared")
	defer db.Close()

	collection := NewWithData(100, "Test", "Heritage", 20, db)

	// Add collection items
	collection.CollectionItems = append(collection.CollectionItems, CollectionItem{
		ItemID: 12345,
		Index:  0,
		Found:  ItemNotFound,
	})

	collection.CollectionItems = append(collection.CollectionItems, CollectionItem{
		ItemID: 12346,
		Index:  1,
		Found:  ItemNotFound,
	})

	// Test NeedsItem
	if !collection.NeedsItem(12345) {
		t.Error("Collection should need item 12345")
	}

	if collection.NeedsItem(99999) {
		t.Error("Collection should not need item 99999")
	}

	// Test GetCollectionItemByItemID
	item := collection.GetCollectionItemByItemID(12345)
	if item == nil {
		t.Error("Should find collection item by ID")
	}

	if item.ItemID != 12345 {
		t.Errorf("Expected item ID 12345, got %d", item.ItemID)
	}

	// Test MarkItemFound
	if !collection.MarkItemFound(12345) {
		t.Error("Should successfully mark item as found")
	}

	// Verify item is now marked as found
	if collection.CollectionItems[0].Found != ItemFound {
		t.Error("Item should be marked as found")
	}

	if !collection.SaveNeeded {
		t.Error("Collection should be marked as needing save")
	}

	// Test that marking the same item again fails
	if collection.MarkItemFound(12345) {
		t.Error("Should not mark already found item again")
	}
}

func TestCollectionProgress(t *testing.T) {
	db, _ := database.NewSQLite("file::memory:?mode=memory&cache=shared")
	defer db.Close()

	collection := NewWithData(100, "Test", "Heritage", 20, db)

	// Add collection items
	for i := 0; i < 4; i++ {
		collection.CollectionItems = append(collection.CollectionItems, CollectionItem{
			ItemID: int32(12345 + i),
			Index:  int8(i),
			Found:  ItemNotFound,
		})
	}

	// Initially 0% progress
	if progress := collection.GetProgress(); progress != 0.0 {
		t.Errorf("Expected 0%% progress, got %.1f%%", progress)
	}

	// Not ready to turn in
	if collection.GetIsReadyToTurnIn() {
		t.Error("Collection should not be ready to turn in")
	}

	// Mark some items found
	collection.MarkItemFound(12345) // 25%
	collection.MarkItemFound(12346) // 50%

	if progress := collection.GetProgress(); progress != 50.0 {
		t.Errorf("Expected 50%% progress, got %.1f%%", progress)
	}

	// Still not ready
	if collection.GetIsReadyToTurnIn() {
		t.Error("Collection should not be ready to turn in at 50%")
	}

	// Mark remaining items
	collection.MarkItemFound(12347) // 75%
	collection.MarkItemFound(12348) // 100%

	if progress := collection.GetProgress(); progress != 100.0 {
		t.Errorf("Expected 100%% progress, got %.1f%%", progress)
	}

	// Now ready to turn in
	if !collection.GetIsReadyToTurnIn() {
		t.Error("Collection should be ready to turn in at 100%")
	}
}

func TestCollectionRewards(t *testing.T) {
	db, _ := database.NewSQLite("file::memory:?mode=memory&cache=shared")
	defer db.Close()

	collection := NewWithData(100, "Test", "Heritage", 20, db)

	// Set coin and XP rewards
	collection.RewardCoin = 1000
	collection.RewardXP = 500

	// Add item rewards
	collection.RewardItems = append(collection.RewardItems, CollectionRewardItem{
		ItemID:   50001,
		Quantity: 1,
	})

	collection.SelectableRewardItems = append(collection.SelectableRewardItems, CollectionRewardItem{
		ItemID:   50002,
		Quantity: 1,
	})

	collection.SelectableRewardItems = append(collection.SelectableRewardItems, CollectionRewardItem{
		ItemID:   50003,
		Quantity: 1,
	})

	if collection.RewardCoin != 1000 {
		t.Errorf("Expected 1000 coin reward, got %d", collection.RewardCoin)
	}

	if collection.RewardXP != 500 {
		t.Errorf("Expected 500 XP reward, got %d", collection.RewardXP)
	}

	if len(collection.RewardItems) != 1 {
		t.Errorf("Expected 1 reward item, got %d", len(collection.RewardItems))
	}

	if len(collection.SelectableRewardItems) != 2 {
		t.Errorf("Expected 2 selectable reward items, got %d", len(collection.SelectableRewardItems))
	}
}

func TestCollectionClone(t *testing.T) {
	db, _ := database.NewSQLite("file::memory:?mode=memory&cache=shared")
	defer db.Close()

	original := NewWithData(500, "Original Collection", "Heritage", 30, db)
	original.RewardCoin = 2000
	original.RewardXP = 1000

	// Add some items
	original.CollectionItems = append(original.CollectionItems, CollectionItem{
		ItemID: 12345,
		Index:  0,
		Found:  ItemFound,
	})

	original.RewardItems = append(original.RewardItems, CollectionRewardItem{
		ItemID:   50001,
		Quantity: 2,
	})

	clone := original.Clone()

	if clone == nil {
		t.Fatal("Clone returned nil")
	}

	if clone == original {
		t.Error("Clone returned same pointer as original")
	}

	// Test that all fields are copied
	if clone.GetID() != original.GetID() {
		t.Errorf("Clone ID = %v, want %v", clone.GetID(), original.GetID())
	}

	if clone.GetName() != original.GetName() {
		t.Errorf("Clone Name = %v, want %v", clone.GetName(), original.GetName())
	}

	if clone.RewardCoin != original.RewardCoin {
		t.Errorf("Clone RewardCoin = %v, want %v", clone.RewardCoin, original.RewardCoin)
	}

	if len(clone.CollectionItems) != len(original.CollectionItems) {
		t.Errorf("Clone items length = %v, want %v", len(clone.CollectionItems), len(original.CollectionItems))
	}

	if len(clone.RewardItems) != len(original.RewardItems) {
		t.Errorf("Clone reward items length = %v, want %v", len(clone.RewardItems), len(original.RewardItems))
	}

	if !clone.IsNew() {
		t.Error("Clone should always be marked as new")
	}

	// Verify modification independence
	clone.Name = "Modified Clone"
	if original.GetName() == "Modified Clone" {
		t.Error("Modifying clone affected original")
	}

	// Verify slice independence
	if len(original.CollectionItems) > 0 && len(clone.CollectionItems) > 0 {
		clone.CollectionItems[0].Found = ItemNotFound
		if original.CollectionItems[0].Found == ItemNotFound {
			t.Error("Modifying clone items affected original")
		}
	}
}

func TestCollectionCompletion(t *testing.T) {
	db, _ := database.NewSQLite("file::memory:?mode=memory&cache=shared")
	defer db.Close()

	collection := NewWithData(100, "Test", "Heritage", 20, db)

	// Add items
	collection.CollectionItems = append(collection.CollectionItems, CollectionItem{
		ItemID: 12345,
		Index:  0,
		Found:  ItemNotFound,
	})

	// Not ready when incomplete
	if collection.GetIsReadyToTurnIn() {
		t.Error("Incomplete collection should not be ready to turn in")
	}

	// Mark as completed
	collection.Completed = true

	// Completed collections are never ready to turn in
	if collection.GetIsReadyToTurnIn() {
		t.Error("Completed collection should not be ready to turn in")
	}

	// Mark item found and set not completed
	collection.Completed = false
	collection.MarkItemFound(12345)

	// Now should be ready
	if !collection.GetIsReadyToTurnIn() {
		t.Error("Collection with all items found should be ready to turn in")
	}
}