#!/bin/bash
# ============================================================================
# Comprehensive Corruption Fix - All Tables
# ============================================================================
# This script:
# 1. Creates a backup
# 2. Scans all tables for corruption
# 3. Prompts for confirmation
# 4. Applies fixes to ALL tables
# 5. Shows before/after comparison
# ============================================================================

set -e  # Exit on error

DB_USER="root"
DB_PASS="secureRootPassword"
DB_NAME="cmc"
CONTAINER="cmc-db"
BACKUP_DIR="./backups"
TIMESTAMP=$(date +%Y%m%d_%H%M%S)

# 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 "${BLUE}============================================================${NC}"
echo -e "${BLUE}CMC Database - Comprehensive Corruption Fix${NC}"
echo -e "${BLUE}============================================================${NC}"
echo ""

# Create backups directory
mkdir -p "$BACKUP_DIR"

# Step 1: Create backup
echo -e "${YELLOW}Step 1: Creating full database backup...${NC}"
docker exec $CONTAINER mariadb-dump \
    -u $DB_USER \
    -p$DB_PASS \
    --default-character-set=utf8mb4 \
    --single-transaction \
    $DB_NAME | gzip > "$BACKUP_DIR/backup_comprehensive_fix_$TIMESTAMP.sql.gz"

BACKUP_SIZE=$(du -h "$BACKUP_DIR/backup_comprehensive_fix_$TIMESTAMP.sql.gz" | cut -f1)
echo -e "${GREEN}✓ Backup created: backup_comprehensive_fix_$TIMESTAMP.sql.gz (${BACKUP_SIZE})${NC}"
echo ""

# Step 2: Scan all tables
echo -e "${YELLOW}Step 2: Scanning ALL tables for corruption...${NC}"
echo "-------------------------------------------"
docker exec $CONTAINER mariadb \
    -u $DB_USER \
    -p$DB_PASS \
    --default-character-set=utf8mb4 \
    $DB_NAME < scripts/scan_all_tables_for_corruption.sql | head -100
echo ""

# Step 3: Prompt for confirmation
echo -e "${RED}IMPORTANT:${NC}"
echo "- Backup created at: $BACKUP_DIR/backup_comprehensive_fix_$TIMESTAMP.sql.gz"
echo "- This will modify ALL text columns in ALL tables"
echo "- Fixes mojibake patterns like: ’ → ', é → é, ° → °, etc."
echo "- Tables affected: customers, principles, addresses, products, contacts,"
echo "  emails, invoices, jobs, quotes, purchase_orders, shipments, etc."
echo ""
read -p "Do you want to proceed with the comprehensive fix? (yes/no): " CONFIRM

if [ "$CONFIRM" != "yes" ]; then
    echo -e "${RED}Fix cancelled by user${NC}"
    exit 0
fi

# Step 4: Apply comprehensive fixes
echo ""
echo -e "${YELLOW}Step 4: Applying comprehensive corruption fixes...${NC}"
docker exec -i $CONTAINER mariadb \
    -u $DB_USER \
    -p$DB_PASS \
    --default-character-set=utf8mb4 \
    $DB_NAME < scripts/fix_all_corruption_hex.sql

echo -e "${GREEN}✓ Comprehensive fix executed${NC}"
echo ""

# Step 5: Re-scan to show results
echo -e "${YELLOW}Step 5: Re-scanning to verify fixes...${NC}"
echo "---------------------------------------"
docker exec $CONTAINER mariadb \
    -u $DB_USER \
    -p$DB_PASS \
    --default-character-set=utf8mb4 \
    $DB_NAME < scripts/scan_all_tables_for_corruption.sql | head -100
echo ""

# Final summary
echo -e "${BLUE}============================================================${NC}"
echo -e "${GREEN}COMPREHENSIVE FIX COMPLETED!${NC}"
echo -e "${BLUE}============================================================${NC}"
echo ""
echo "Summary:"
echo "- Backup location: $BACKUP_DIR/backup_comprehensive_fix_$TIMESTAMP.sql.gz"
echo "- Fixed corruption patterns across ALL tables"
echo "- Common patterns: smart quotes, accented characters, symbols, HTML entities"
echo ""
echo "Next steps:"
echo "1. Review the fixed data in the application"
echo "2. Test critical functionality (quotes, invoices, emails, etc.)"
echo "3. Run: bash scripts/report_remaining_corruption.sh if any issues remain"
echo ""
echo "To rollback if needed:"
echo "  gunzip < $BACKUP_DIR/backup_comprehensive_fix_$TIMESTAMP.sql.gz | \\"
echo "  docker exec -i $CONTAINER mariadb -u $DB_USER -p$DB_PASS $DB_NAME"
echo ""