#!/usr/bin/env bash
# ============================================================================
# Functional Test: Tenant Deletion System
# ============================================================================
# Tests the complete tenant deletion workflow with service tokens
#
# Usage:
#   ./scripts/functional_test_deletion.sh <tenant_id>
#
# Example:
#   ./scripts/functional_test_deletion.sh dbc2128a-7539-470c-94b9-c1e37031bd77
#
# ============================================================================

set -e  # Exit on error

# Require bash 4+ for associative arrays
if [ "${BASH_VERSINFO[0]}" -lt 4 ]; then
    echo "Error: This script requires bash 4.0 or higher"
    echo "Current version: ${BASH_VERSION}"
    exit 1
fi

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Configuration
TENANT_ID="${1:-dbc2128a-7539-470c-94b9-c1e37031bd77}"
SERVICE_TOKEN="${SERVICE_TOKEN:-eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ0ZW5hbnQtZGVsZXRpb24tb3JjaGVzdHJhdG9yIiwidXNlcl9pZCI6InRlbmFudC1kZWxldGlvbi1vcmNoZXN0cmF0b3IiLCJzZXJ2aWNlIjoidGVuYW50LWRlbGV0aW9uLW9yY2hlc3RyYXRvciIsInR5cGUiOiJzZXJ2aWNlIiwiaXNfc2VydmljZSI6dHJ1ZSwicm9sZSI6ImFkbWluIiwiZW1haWwiOiJ0ZW5hbnQtZGVsZXRpb24tb3JjaGVzdHJhdG9yQGludGVybmFsLnNlcnZpY2UiLCJleHAiOjE3OTM0NDIwMzAsImlhdCI6MTc2MTkwNjAzMCwiaXNzIjoiYmFrZXJ5LWF1dGgifQ.I6mWLpkRim2fJ1v9WH24g4YT3-ZGbuFXxCorZxhPp6c}"

# Test mode (preview or delete)
TEST_MODE="${2:-preview}"  # preview or delete

# Service list with their endpoints
declare -A SERVICES=(
    ["orders"]="orders-service:8000"
    ["inventory"]="inventory-service:8000"
    ["recipes"]="recipes-service:8000"
    ["sales"]="sales-service:8000"
    ["production"]="production-service:8000"
    ["suppliers"]="suppliers-service:8000"
    ["pos"]="pos-service:8000"
    ["external"]="city-service:8000"
    ["forecasting"]="forecasting-service:8000"
    ["training"]="training-service:8000"
    ["alert-processor"]="alert-processor-service:8000"
    ["notification"]="notification-service:8000"
)

# Results tracking
TOTAL_SERVICES=12
SUCCESSFUL_TESTS=0
FAILED_TESTS=0
declare -a FAILED_SERVICES

# ============================================================================
# Helper Functions
# ============================================================================

print_header() {
    echo -e "${BLUE}============================================================================${NC}"
    echo -e "${BLUE}$1${NC}"
    echo -e "${BLUE}============================================================================${NC}"
}

print_success() {
    echo -e "${GREEN}✓${NC} $1"
}

print_error() {
    echo -e "${RED}✗${NC} $1"
}

print_warning() {
    echo -e "${YELLOW}⚠${NC} $1"
}

print_info() {
    echo -e "${BLUE}ℹ${NC} $1"
}

# ============================================================================
# Test Functions
# ============================================================================

test_service_preview() {
    local service_name=$1
    local service_host=$2
    local endpoint_path=$3

    echo ""
    echo -e "${BLUE}Testing ${service_name}...${NC}"

    # Get running pod
    local pod=$(kubectl get pods -n bakery-ia -l app=${service_name}-service 2>/dev/null | grep Running | head -1 | awk '{print $1}')

    if [ -z "$pod" ]; then
        print_error "No running pod found for ${service_name}"
        FAILED_TESTS=$((FAILED_TESTS + 1))
        FAILED_SERVICES+=("${service_name}")
        return 1
    fi

    print_info "Pod: ${pod}"

    # Execute request inside pod
    local response=$(kubectl exec -n bakery-ia "$pod" -- curl -s -w "\n%{http_code}" \
        -H "Authorization: Bearer ${SERVICE_TOKEN}" \
        "http://localhost:8000${endpoint_path}/tenant/${TENANT_ID}/deletion-preview" 2>&1)

    local http_code=$(echo "$response" | tail -1)
    local body=$(echo "$response" | sed '$d')

    if [ "$http_code" = "200" ]; then
        print_success "Preview successful (HTTP ${http_code})"

        # Parse and display counts
        local total_records=$(echo "$body" | grep -o '"total_records":[0-9]*' | cut -d':' -f2 || echo "0")
        print_info "Records to delete: ${total_records}"

        # Show breakdown if available
        echo "$body" | python3 -m json.tool 2>/dev/null | grep -A50 "breakdown" | head -20 || echo ""

        SUCCESSFUL_TESTS=$((SUCCESSFUL_TESTS + 1))
        return 0
    elif [ "$http_code" = "401" ]; then
        print_error "Authentication failed (HTTP ${http_code})"
        print_warning "Service token may be invalid or expired"
        echo "$body"
        FAILED_TESTS=$((FAILED_TESTS + 1))
        FAILED_SERVICES+=("${service_name}")
        return 1
    elif [ "$http_code" = "403" ]; then
        print_error "Authorization failed (HTTP ${http_code})"
        print_warning "Service token not recognized as service"
        echo "$body"
        FAILED_TESTS=$((FAILED_TESTS + 1))
        FAILED_SERVICES+=("${service_name}")
        return 1
    elif [ "$http_code" = "404" ]; then
        print_error "Endpoint not found (HTTP ${http_code})"
        print_warning "Deletion endpoint may not be implemented"
        FAILED_TESTS=$((FAILED_TESTS + 1))
        FAILED_SERVICES+=("${service_name}")
        return 1
    elif [ "$http_code" = "500" ]; then
        print_error "Server error (HTTP ${http_code})"
        echo "$body" | head -5
        FAILED_TESTS=$((FAILED_TESTS + 1))
        FAILED_SERVICES+=("${service_name}")
        return 1
    else
        print_error "Unexpected response (HTTP ${http_code})"
        echo "$body" | head -5
        FAILED_TESTS=$((FAILED_TESTS + 1))
        FAILED_SERVICES+=("${service_name}")
        return 1
    fi
}

test_service_deletion() {
    local service_name=$1
    local service_host=$2
    local endpoint_path=$3

    echo ""
    echo -e "${BLUE}Deleting data in ${service_name}...${NC}"

    # Get running pod
    local pod=$(kubectl get pods -n bakery-ia -l app=${service_name}-service 2>/dev/null | grep Running | head -1 | awk '{print $1}')

    if [ -z "$pod" ]; then
        print_error "No running pod found for ${service_name}"
        FAILED_TESTS=$((FAILED_TESTS + 1))
        FAILED_SERVICES+=("${service_name}")
        return 1
    fi

    # Execute deletion request inside pod
    local response=$(kubectl exec -n bakery-ia "$pod" -- curl -s -w "\n%{http_code}" \
        -X DELETE \
        -H "Authorization: Bearer ${SERVICE_TOKEN}" \
        "http://localhost:8000${endpoint_path}/tenant/${TENANT_ID}" 2>&1)

    local http_code=$(echo "$response" | tail -1)
    local body=$(echo "$response" | sed '$d')

    if [ "$http_code" = "200" ]; then
        print_success "Deletion successful (HTTP ${http_code})"

        # Parse and display deletion summary
        local total_deleted=$(echo "$body" | grep -o '"total_records_deleted":[0-9]*' | cut -d':' -f2 || echo "0")
        print_info "Records deleted: ${total_deleted}"

        SUCCESSFUL_TESTS=$((SUCCESSFUL_TESTS + 1))
        return 0
    else
        print_error "Deletion failed (HTTP ${http_code})"
        echo "$body" | head -5
        FAILED_TESTS=$((FAILED_TESTS + 1))
        FAILED_SERVICES+=("${service_name}")
        return 1
    fi
}

# ============================================================================
# Main Test Execution
# ============================================================================

main() {
    print_header "Tenant Deletion System - Functional Test"

    echo ""
    print_info "Tenant ID: ${TENANT_ID}"
    print_info "Test Mode: ${TEST_MODE}"
    print_info "Services to test: ${TOTAL_SERVICES}"
    echo ""

    # Verify service token
    print_info "Verifying service token..."
    if python scripts/generate_service_token.py --verify "${SERVICE_TOKEN}" > /dev/null 2>&1; then
        print_success "Service token is valid"
    else
        print_error "Service token is invalid or expired"
        exit 1
    fi

    echo ""
    print_header "Phase 1: Testing Service Previews"

    # Test each service preview
    test_service_preview "orders" "orders-service:8000" "/api/v1/orders"
    test_service_preview "inventory" "inventory-service:8000" "/api/v1/inventory"
    test_service_preview "recipes" "recipes-service:8000" "/api/v1/recipes"
    test_service_preview "sales" "sales-service:8000" "/api/v1/sales"
    test_service_preview "production" "production-service:8000" "/api/v1/production"
    test_service_preview "suppliers" "suppliers-service:8000" "/api/v1/suppliers"
    test_service_preview "pos" "pos-service:8000" "/api/v1/pos"
    test_service_preview "external" "city-service:8000" "/api/v1/nominatim"
    test_service_preview "forecasting" "forecasting-service:8000" "/api/v1/forecasting"
    test_service_preview "training" "training-service:8000" "/api/v1/training"
    test_service_preview "alert-processor" "alert-processor-service:8000" "/api/v1/analytics"
    test_service_preview "notification" "notification-service:8000" "/api/v1/notifications"

    # Summary
    echo ""
    print_header "Preview Test Results"
    echo -e "Total Services: ${TOTAL_SERVICES}"
    echo -e "${GREEN}Successful:${NC} ${SUCCESSFUL_TESTS}/${TOTAL_SERVICES}"
    echo -e "${RED}Failed:${NC} ${FAILED_TESTS}/${TOTAL_SERVICES}"

    if [ ${FAILED_TESTS} -gt 0 ]; then
        echo ""
        print_warning "Failed Services:"
        for service in "${FAILED_SERVICES[@]}"; do
            echo "  - ${service}"
        done
    fi

    # Ask for confirmation before actual deletion
    if [ "$TEST_MODE" = "delete" ]; then
        echo ""
        print_header "Phase 2: Actual Deletion"
        print_warning "This will PERMANENTLY delete data for tenant ${TENANT_ID}"
        print_warning "This operation is IRREVERSIBLE"
        echo ""
        read -p "Are you sure you want to proceed? (yes/no): " confirm

        if [ "$confirm" != "yes" ]; then
            print_info "Deletion cancelled by user"
            exit 0
        fi

        # Reset counters
        SUCCESSFUL_TESTS=0
        FAILED_TESTS=0
        FAILED_SERVICES=()

        # Execute deletions
        test_service_deletion "orders" "orders-service:8000" "/api/v1/orders"
        test_service_deletion "inventory" "inventory-service:8000" "/api/v1/inventory"
        test_service_deletion "recipes" "recipes-service:8000" "/api/v1/recipes"
        test_service_deletion "sales" "sales-service:8000" "/api/v1/sales"
        test_service_deletion "production" "production-service:8000" "/api/v1/production"
        test_service_deletion "suppliers" "suppliers-service:8000" "/api/v1/suppliers"
        test_service_deletion "pos" "pos-service:8000" "/api/v1/pos"
        test_service_deletion "external" "city-service:8000" "/api/v1/nominatim"
        test_service_deletion "forecasting" "forecasting-service:8000" "/api/v1/forecasting"
        test_service_deletion "training" "training-service:8000" "/api/v1/training"
        test_service_deletion "alert-processor" "alert-processor-service:8000" "/api/v1/analytics"
        test_service_deletion "notification" "notification-service:8000" "/api/v1/notifications"

        # Deletion summary
        echo ""
        print_header "Deletion Test Results"
        echo -e "Total Services: ${TOTAL_SERVICES}"
        echo -e "${GREEN}Successful:${NC} ${SUCCESSFUL_TESTS}/${TOTAL_SERVICES}"
        echo -e "${RED}Failed:${NC} ${FAILED_TESTS}/${TOTAL_SERVICES}"

        if [ ${FAILED_TESTS} -gt 0 ]; then
            echo ""
            print_warning "Failed Services:"
            for service in "${FAILED_SERVICES[@]}"; do
                echo "  - ${service}"
            done
        fi
    fi

    echo ""
    print_header "Test Complete"

    if [ ${FAILED_TESTS} -eq 0 ]; then
        print_success "All tests passed successfully!"
        exit 0
    else
        print_error "Some tests failed. See details above."
        exit 1
    fi
}

# Run main function
main