//go:build integration
// +build integration

package main

import (
	"bytes"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"os"
	"testing"
	"time"

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

// Integration tests require a running database
// Run with: go test -tags=integration -v ./...

func TestIntegration_HealthEndpoint(t *testing.T) {
	if os.Getenv("INTEGRATION") != "1" {
		t.Skip("Skipping integration test. Set INTEGRATION=1 to run.")
	}

	// Start server
	go main()
	time.Sleep(2 * time.Second) // Wait for server to start

	resp, err := http.Get("http://localhost:9092/health")
	require.NoError(t, err)
	defer resp.Body.Close()

	assert.Equal(t, http.StatusOK, resp.StatusCode)

	var result map[string]interface{}
	err = json.NewDecoder(resp.Body).Decode(&result)
	require.NoError(t, err)
	assert.Equal(t, true, result["ok"])
}

func TestIntegration_FullWorkflow(t *testing.T) {
	if os.Getenv("INTEGRATION") != "1" {
		t.Skip("Skipping integration test. Set INTEGRATION=1 to run.")
	}

	baseURL := "http://localhost:9092"

	// 1. Create customer
	customer := map[string]interface{}{
		"name":    "Integration Test Customer",
		"email":   "integration@test.com",
		"phone":   "+46701234567",
		"company": "Test AB",
		"status":  "lead",
	}
	customerBody, _ := json.Marshal(customer)
	
	resp, err := http.Post(baseURL+"/api/v1/crm/customers", "application/json", bytes.NewReader(customerBody))
	require.NoError(t, err)
	assert.Equal(t, http.StatusCreated, resp.StatusCode)
	
	var customerResult map[string]interface{}
	json.NewDecoder(resp.Body).Decode(&customerResult)
	resp.Body.Close()
	
	customerID := customerResult["id"].(string)
	assert.NotEmpty(t, customerID)

	// 2. Create quote
	quote := map[string]interface{}{
		"customer_id": customerID,
		"title":       "Test Quote",
		"description": "Integration test quote",
		"valid_until": time.Now().AddDate(0, 1, 0).Format("2006-01-02"),
		"items": []map[string]interface{}{
			{
				"description": "Service A",
				"quantity":    10,
				"unit_price":  100.00,
				"tax_rate":    25.0,
			},
		},
	}
	quoteBody, _ := json.Marshal(quote)
	
	resp, err = http.Post(baseURL+"/api/v1/sales/quotes", "application/json", bytes.NewReader(quoteBody))
	require.NoError(t, err)
	assert.Equal(t, http.StatusCreated, resp.StatusCode)
	
	var quoteResult map[string]interface{}
	json.NewDecoder(resp.Body).Decode(&quoteResult)
	resp.Body.Close()
	
	quoteID := quoteResult["id"].(string)
	assert.NotEmpty(t, quoteID)

	// 3. Accept quote
	req, _ := http.NewRequest(http.MethodPost, baseURL+"/api/v1/sales/quotes/"+quoteID+"/accept", nil)
	resp, err = http.DefaultClient.Do(req)
	require.NoError(t, err)
	assert.Equal(t, http.StatusOK, resp.StatusCode)
	resp.Body.Close()

	// 4. Convert to order
	req, _ = http.NewRequest(http.MethodPost, baseURL+"/api/v1/sales/quotes/"+quoteID+"/convert", nil)
	resp, err = http.DefaultClient.Do(req)
	require.NoError(t, err)
	assert.Equal(t, http.StatusCreated, resp.StatusCode)
	
	var orderResult map[string]interface{}
	json.NewDecoder(resp.Body).Decode(&orderResult)
	resp.Body.Close()
	
	orderID := orderResult["order_id"].(string)
	assert.NotEmpty(t, orderID)

	// 5. Create invoice from order (would need invoice handler)
	// Skipped for now

	t.Logf("Created customer: %s, quote: %s, order: %s", customerID, quoteID, orderID)
}

func TestIntegration_Performance(t *testing.T) {
	if os.Getenv("INTEGRATION") != "1" {
		t.Skip("Skipping integration test. Set INTEGRATION=1 to run.")
	}

	baseURL := "http://localhost:9092"

	// Test response time for health endpoint
	start := time.Now()
	resp, err := http.Get(baseURL + "/health")
	elapsed := time.Since(start)
	
	require.NoError(t, err)
	resp.Body.Close()
	
	assert.Equal(t, http.StatusOK, resp.StatusCode)
	assert.Less(t, elapsed, 100*time.Millisecond, "Health endpoint too slow")

	t.Logf("Health endpoint response time: %v", elapsed)
}

// Mock test for handlers without DB
func TestMock_CRMHandler(t *testing.T) {
	// This is a placeholder for future mock-based tests
	// Would use sqlmock to mock database interactions
	assert.True(t, true)
}