#!/bin/bash

# Toggle SMTP Configuration Script
# Switches between development (MailHog) and production (ProtonMail) SMTP settings

set -e

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
ENV_FILE="$SCRIPT_DIR/../.env"

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

echo -e "${BLUE}"
cat << "EOF"
╔══════════════════════════════════════════════════╗
║     SMTP Configuration Toggle Tool               ║
║     Influence Campaign Application               ║
╚══════════════════════════════════════════════════╝
EOF
echo -e "${NC}"

# Check if .env file exists
if [ ! -f "$ENV_FILE" ]; then
    echo -e "${RED}Error: .env file not found at $ENV_FILE${NC}"
    exit 1
fi

# Detect current mode
if grep -q "^SMTP_HOST=mailhog" "$ENV_FILE"; then
    CURRENT_MODE="development"
    CURRENT_HOST="mailhog"
elif grep -q "^SMTP_HOST=smtp.protonmail.ch" "$ENV_FILE"; then
    CURRENT_MODE="production"
    CURRENT_HOST="smtp.protonmail.ch"
else
    CURRENT_MODE="unknown"
    CURRENT_HOST=$(grep "^SMTP_HOST=" "$ENV_FILE" | cut -d'=' -f2)
fi

echo -e "${YELLOW}Current Configuration:${NC}"
echo -e "  Mode: ${BLUE}$CURRENT_MODE${NC}"
echo -e "  SMTP Host: ${BLUE}$CURRENT_HOST${NC}"
echo -e "  Email Test Mode: ${BLUE}$(grep "^EMAIL_TEST_MODE=" "$ENV_FILE" | cut -d'=' -f2)${NC}"
echo -e "  Node Environment: ${BLUE}$(grep "^NODE_ENV=" "$ENV_FILE" | cut -d'=' -f2)${NC}"
echo ""

# Ask user what mode they want
echo "Select SMTP configuration mode:"
echo "  1) Development (MailHog - emails captured locally)"
echo "  2) Production (ProtonMail - emails sent to real recipients)"
echo "  3) Cancel"
echo ""
read -p "Enter your choice (1-3): " choice

case $choice in
    1)
        TARGET_MODE="development"
        ;;
    2)
        TARGET_MODE="production"
        ;;
    3)
        echo -e "${YELLOW}Cancelled. No changes made.${NC}"
        exit 0
        ;;
    *)
        echo -e "${RED}Invalid choice. Exiting.${NC}"
        exit 1
        ;;
esac

# Confirm if already in target mode
if [ "$CURRENT_MODE" = "$TARGET_MODE" ]; then
    echo -e "${GREEN}Already in $TARGET_MODE mode. No changes needed.${NC}"
    exit 0
fi

# Create backup
BACKUP_FILE="${ENV_FILE}.backup_$(date +%Y%m%d_%H%M%S)"
cp "$ENV_FILE" "$BACKUP_FILE"
echo -e "${GREEN}✓ Backup created: $BACKUP_FILE${NC}"

# Apply configuration based on target mode
if [ "$TARGET_MODE" = "development" ]; then
    echo ""
    echo -e "${BLUE}Switching to DEVELOPMENT mode...${NC}"
    echo ""
    
    # Comment out production SMTP settings
    sed -i 's/^SMTP_HOST=smtp.protonmail.ch/# SMTP_HOST=smtp.protonmail.ch/' "$ENV_FILE"
    sed -i 's/^SMTP_PORT=587$/# SMTP_PORT=587/' "$ENV_FILE"
    sed -i 's/^SMTP_SECURE=false$/# SMTP_SECURE=false/' "$ENV_FILE"
    sed -i 's/^SMTP_USER=cmlite@bnkops.ca/# SMTP_USER=cmlite@bnkops.ca/' "$ENV_FILE"
    sed -i 's/^SMTP_PASS=QMLDV1E2MWDHNJMY/# SMTP_PASS=QMLDV1E2MWDHNJMY/' "$ENV_FILE"
    sed -i 's/^SMTP_FROM_EMAIL=cmlite@bnkops.ca/# SMTP_FROM_EMAIL=cmlite@bnkops.ca/' "$ENV_FILE"
    sed -i 's/^SMTP_FROM_NAME="BNKops Influence Campaign"$/# SMTP_FROM_NAME="BNKops Influence Campaign"/' "$ENV_FILE"
    
    # Uncomment development SMTP settings
    sed -i 's/^# SMTP_HOST=mailhog-changemaker$/SMTP_HOST=mailhog-changemaker/' "$ENV_FILE"
    sed -i 's/^# SMTP_PORT=1025$/SMTP_PORT=1025/' "$ENV_FILE"
    sed -i 's/^# SMTP_SECURE=false$/SMTP_SECURE=false/' "$ENV_FILE"
    sed -i 's/^# SMTP_USER=test$/SMTP_USER=test/' "$ENV_FILE"
    sed -i 's/^# SMTP_PASS=test$/SMTP_PASS=test/' "$ENV_FILE"
    sed -i 's/^# SMTP_FROM_EMAIL=dev@albertainfluence.local$/SMTP_FROM_EMAIL=dev@albertainfluence.local/' "$ENV_FILE"
    sed -i 's/^# SMTP_FROM_NAME="BNKops Influence Campaign (DEV)"$/SMTP_FROM_NAME="BNKops Influence Campaign (DEV)"/' "$ENV_FILE"
    
    # Update other settings
    sed -i 's/^NODE_ENV=production$/NODE_ENV=development/' "$ENV_FILE"
    sed -i 's/^EMAIL_TEST_MODE=false$/EMAIL_TEST_MODE=true/' "$ENV_FILE"
    sed -i 's|^APP_URL=https://influence.cmlite.org$|APP_URL=http://localhost:3333|' "$ENV_FILE"
    
    echo -e "${GREEN}✓ Configured for DEVELOPMENT mode${NC}"
    echo ""
    echo -e "${YELLOW}Development Configuration:${NC}"
    echo "  • SMTP: MailHog (mailhog-changemaker:1025)"
    echo "  • Web UI: http://localhost:8025"
    echo "  • Email Test Mode: Enabled"
    echo "  • Node Environment: development"
    echo "  • App URL: http://localhost:3333"
    echo ""
    echo -e "${YELLOW}Next Steps:${NC}"
    echo "  1. Ensure MailHog is running (from root directory):"
    echo -e "     ${BLUE}cd .. && docker compose up -d mailhog${NC}"
    echo ""
    echo "  2. Start the Influence app:"
    echo -e "     ${BLUE}docker compose up -d${NC}"
    echo ""
    echo "  3. Access MailHog UI to view captured emails:"
    echo -e "     ${BLUE}http://localhost:8025${NC}"
    
elif [ "$TARGET_MODE" = "production" ]; then
    echo ""
    echo -e "${BLUE}Switching to PRODUCTION mode...${NC}"
    echo ""
    
    # Confirm production switch
    echo -e "${RED}⚠️  WARNING: Production mode will send REAL emails!${NC}"
    read -p "Are you sure you want to switch to production? (yes/no): " confirm
    
    if [ "$confirm" != "yes" ]; then
        echo -e "${YELLOW}Cancelled. Restoring backup...${NC}"
        mv "$BACKUP_FILE" "$ENV_FILE"
        echo -e "${GREEN}✓ Original configuration restored${NC}"
        exit 0
    fi
    
    # Comment out development SMTP settings
    sed -i 's/^SMTP_HOST=mailhog-changemaker$/# SMTP_HOST=mailhog-changemaker/' "$ENV_FILE"
    sed -i 's/^SMTP_PORT=1025$/# SMTP_PORT=1025/' "$ENV_FILE"
    sed -i 's/^SMTP_SECURE=false$/# SMTP_SECURE=false/' "$ENV_FILE"
    sed -i 's/^SMTP_USER=test$/# SMTP_USER=test/' "$ENV_FILE"
    sed -i 's/^SMTP_PASS=test$/# SMTP_PASS=test/' "$ENV_FILE"
    sed -i 's/^SMTP_FROM_EMAIL=dev@albertainfluence.local$/# SMTP_FROM_EMAIL=dev@albertainfluence.local/' "$ENV_FILE"
    sed -i 's/^SMTP_FROM_NAME="BNKops Influence Campaign (DEV)"$/# SMTP_FROM_NAME="BNKops Influence Campaign (DEV)"/' "$ENV_FILE"
    
    # Uncomment production SMTP settings
    sed -i 's/^# SMTP_HOST=smtp.protonmail.ch$/SMTP_HOST=smtp.protonmail.ch/' "$ENV_FILE"
    sed -i 's/^# SMTP_PORT=587$/SMTP_PORT=587/' "$ENV_FILE"
    sed -i 's/^# SMTP_SECURE=false$/SMTP_SECURE=false/' "$ENV_FILE"
    sed -i 's/^# SMTP_USER=cmlite@bnkops.ca$/SMTP_USER=cmlite@bnkops.ca/' "$ENV_FILE"
    sed -i 's/^# SMTP_PASS=QMLDV1E2MWDHNJMY$/SMTP_PASS=QMLDV1E2MWDHNJMY/' "$ENV_FILE"
    sed -i 's/^# SMTP_FROM_EMAIL=cmlite@bnkops.ca$/SMTP_FROM_EMAIL=cmlite@bnkops.ca/' "$ENV_FILE"
    sed -i 's/^# SMTP_FROM_NAME="BNKops Influence Campaign"$/SMTP_FROM_NAME="BNKops Influence Campaign"/' "$ENV_FILE"
    
    # Update other settings
    sed -i 's/^NODE_ENV=development$/NODE_ENV=production/' "$ENV_FILE"
    sed -i 's/^EMAIL_TEST_MODE=true$/EMAIL_TEST_MODE=false/' "$ENV_FILE"
    sed -i 's|^APP_URL=http://localhost:3333$|APP_URL=https://influence.cmlite.org|' "$ENV_FILE"
    
    echo -e "${GREEN}✓ Configured for PRODUCTION mode${NC}"
    echo ""
    echo -e "${YELLOW}Production Configuration:${NC}"
    echo "  • SMTP: ProtonMail (smtp.protonmail.ch)"
    echo "  • Email Test Mode: Disabled"
    echo "  • Node Environment: production"
    echo "  • App URL: https://influence.cmlite.org"
    echo ""
    echo -e "${RED}⚠️  IMPORTANT: Emails will be sent to REAL recipients!${NC}"
    echo ""
    echo -e "${YELLOW}Next Steps:${NC}"
    echo "  1. Restart the application:"
    echo -e "     ${BLUE}docker compose down && docker compose up -d${NC}"
    echo ""
    echo "  2. Verify SMTP connection:"
    echo -e "     ${BLUE}docker compose logs -f${NC}"
fi

echo ""
echo -e "${GREEN}════════════════════════════════════════════════${NC}"
echo -e "${GREEN}✓ Configuration updated successfully!${NC}"
echo -e "${GREEN}════════════════════════════════════════════════${NC}"
echo ""
echo "Current settings:"
grep "^SMTP_HOST=" "$ENV_FILE"
grep "^NODE_ENV=" "$ENV_FILE"
grep "^EMAIL_TEST_MODE=" "$ENV_FILE"
grep "^APP_URL=" "$ENV_FILE"
echo ""
echo -e "Backup saved at: ${BLUE}$BACKUP_FILE${NC}"