package blockchain

import (
	"os"
	"testing"

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

func TestSubmitPerspective(t *testing.T) {
	// Set up test environment variables
	os.Setenv("POLYGON_RPC", "https://rpc-amoy.polygon.technology")
	os.Setenv("PRIVATE_KEY", "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef")
	os.Setenv("CONTRACT_ADDRESS", "0x1234567890123456789012345678901234567890")

	// Create service
	service, err := NewBlockchainService()
	assert.NoError(t, err)
	defer service.Close()

	// Test cases
	tests := []struct {
		name    string
		hash    string
		wantErr bool
	}{
		{
			name:    "Valid hash",
			hash:    "0x1234567890123456789012345678901234567890123456789012345678901234",
			wantErr: false,
		},
		{
			name:    "Empty hash",
			hash:    "",
			wantErr: true,
		},
		{
			name:    "Invalid hash format",
			hash:    "invalid",
			wantErr: true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			txHash, err := service.SubmitPerspective(tt.hash)
			if tt.wantErr {
				assert.Error(t, err)
				return
			}
			assert.NoError(t, err)
			assert.NotEmpty(t, txHash)
		})
	}
}

func TestProposeInsight(t *testing.T) {
	// Set up test environment variables
	os.Setenv("POLYGON_RPC", "https://rpc-amoy.polygon.technology")
	os.Setenv("PRIVATE_KEY", "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef")
	os.Setenv("CONTRACT_ADDRESS", "0x1234567890123456789012345678901234567890")

	// Create service
	service, err := NewBlockchainService()
	assert.NoError(t, err)
	defer service.Close()

	// Test cases
	tests := []struct {
		name    string
		insight string
		wantErr bool
	}{
		{
			name:    "Valid insight",
			insight: "This is a test insight",
			wantErr: false,
		},
		{
			name:    "Empty insight",
			insight: "",
			wantErr: true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			txHash, err := service.ProposeInsight(tt.insight)
			if tt.wantErr {
				assert.Error(t, err)
				return
			}
			assert.NoError(t, err)
			assert.NotEmpty(t, txHash)
		})
	}
}

func TestVoteOnInsight(t *testing.T) {
	// Set up test environment variables
	os.Setenv("POLYGON_RPC", "https://rpc-amoy.polygon.technology")
	os.Setenv("PRIVATE_KEY", "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef")
	os.Setenv("CONTRACT_ADDRESS", "0x1234567890123456789012345678901234567890")

	// Create service
	service, err := NewBlockchainService()
	assert.NoError(t, err)
	defer service.Close()

	// Test cases
	tests := []struct {
		name      string
		insightID string
		vote      bool
		wantErr   bool
	}{
		{
			name:      "Valid vote - true",
			insightID: "0x1234567890123456789012345678901234567890123456789012345678901234",
			vote:      true,
			wantErr:   false,
		},
		{
			name:      "Valid vote - false",
			insightID: "0x1234567890123456789012345678901234567890123456789012345678901234",
			vote:      false,
			wantErr:   false,
		},
		{
			name:      "Empty insight ID",
			insightID: "",
			vote:      true,
			wantErr:   true,
		},
		{
			name:      "Invalid insight ID format",
			insightID: "invalid",
			vote:      true,
			wantErr:   true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			txHash, err := service.VoteOnInsight(tt.insightID, tt.vote)
			if tt.wantErr {
				assert.Error(t, err)
				return
			}
			assert.NoError(t, err)
			assert.NotEmpty(t, txHash)
		})
	}
}

func TestNewBlockchainService(t *testing.T) {
	tests := []struct {
		name    string
		envVars map[string]string
		wantErr bool
	}{
		{
			name: "All required environment variables set",
			envVars: map[string]string{
				"POLYGON_RPC":      "https://rpc-amoy.polygon.technology",
				"PRIVATE_KEY":      "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
				"CONTRACT_ADDRESS": "0x1234567890123456789012345678901234567890",
			},
			wantErr: false,
		},
		{
			name: "Missing POLYGON_RPC",
			envVars: map[string]string{
				"PRIVATE_KEY":      "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
				"CONTRACT_ADDRESS": "0x1234567890123456789012345678901234567890",
			},
			wantErr: true,
		},
		{
			name: "Missing PRIVATE_KEY",
			envVars: map[string]string{
				"POLYGON_RPC":      "https://rpc-amoy.polygon.technology",
				"CONTRACT_ADDRESS": "0x1234567890123456789012345678901234567890",
			},
			wantErr: true,
		},
		{
			name: "Missing CONTRACT_ADDRESS",
			envVars: map[string]string{
				"POLYGON_RPC": "https://rpc-amoy.polygon.technology",
				"PRIVATE_KEY": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
			},
			wantErr: true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			// Clear environment variables
			os.Unsetenv("POLYGON_RPC")
			os.Unsetenv("PRIVATE_KEY")
			os.Unsetenv("CONTRACT_ADDRESS")

			// Set test environment variables
			for key, value := range tt.envVars {
				os.Setenv(key, value)
			}

			// Create service
			service, err := NewBlockchainService()
			if tt.wantErr {
				assert.Error(t, err)
				return
			}
			assert.NoError(t, err)
			assert.NotNil(t, service)
			service.Close()
		})
	}
}