package clients

import (
	"btclock/broker"
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestMempoolClient_HandleMempoolBlocksMessage(t *testing.T) {
	tests := []struct {
		name          string
		input         map[string]any
		expectedError bool
		expectedFee   float64
	}{
		{
			name: "valid mempool blocks message",
			input: map[string]any{
				"mempool-blocks": []any{
					map[string]any{
						"blockSize":  1000.0,
						"blockVSize": 2000.0,
						"nTx":        100.0,
						"totalFees":  500.0,
						"medianFee":  5.5,
						"feeRange":   []any{1.0, 2.0, 3.0},
					},
				},
			},
			expectedError: false,
			expectedFee:   5.5,
		},
		{
			name: "invalid mempool blocks format",
			input: map[string]any{
				"mempool-blocks": "invalid",
			},
			expectedError: true,
		},
		{
			name: "empty mempool blocks",
			input: map[string]any{
				"mempool-blocks": []any{},
			},
			expectedError: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			broker := broker.NewEventBroker()
			client := &MempoolClient{
				broker: broker,
			}

			err := client.handleMempoolBlocksMessage(tt.input)
			if tt.expectedError {
				assert.Error(t, err)
			} else {
				assert.NoError(t, err)
			}
		})
	}
}

func TestMempoolClient_HandleBlocksMessage(t *testing.T) {
	tests := []struct {
		name           string
		input          map[string]any
		expectedError  bool
		expectedHeight int
	}{
		{
			name: "valid block message",
			input: map[string]any{
				"block": map[string]any{
					"height": 800000.0,
				},
			},
			expectedError:  false,
			expectedHeight: 800000,
		},
		{
			name: "invalid block format",
			input: map[string]any{
				"block": "invalid",
			},
			expectedError: true,
		},
		{
			name: "missing height",
			input: map[string]any{
				"block": map[string]any{},
			},
			expectedError: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			broker := broker.NewEventBroker()
			client := &MempoolClient{
				broker: broker,
			}

			err := client.handleBlocksMessage(tt.input)
			if tt.expectedError {
				assert.Error(t, err)
			} else {
				assert.NoError(t, err)
			}
		})
	}
}

func TestMempoolClient_HandleBlocksArrayMessage(t *testing.T) {
	tests := []struct {
		name           string
		input          map[string]any
		expectedError  bool
		expectedHeight int
	}{
		{
			name: "valid blocks array message",
			input: map[string]any{
				"blocks": []any{
					map[string]any{
						"height": 799999.0,
					},
					map[string]any{
						"height": 800000.0,
					},
				},
			},
			expectedError:  false,
			expectedHeight: 800000,
		},
		{
			name: "invalid blocks format",
			input: map[string]any{
				"blocks": "invalid",
			},
			expectedError: true,
		},
		{
			name: "empty blocks array",
			input: map[string]any{
				"blocks": []any{},
			},
			expectedError: true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			broker := broker.NewEventBroker()
			client := &MempoolClient{
				broker: broker,
			}

			err := client.handleBlocksArrayMessage(tt.input)
			if tt.expectedError {
				assert.Error(t, err)
			} else {
				assert.NoError(t, err)
			}
		})
	}
}

func TestMempoolClient_Init(t *testing.T) {
	broker := broker.NewEventBroker()
	client := NewMempoolClient()

	err := client.Init(broker)
	assert.NoError(t, err)
	assert.Equal(t, broker, client.broker)
}

func TestMempoolClient_ID(t *testing.T) {
	client := NewMempoolClient()
	assert.Equal(t, "mempool", client.ID())
}