#!/bin/bash
#
# RWA Mining Ecosystem 2.0 - Deployment & Management Script
# ==========================================================
#
# This script manages the Mining 2.0 ecosystem independently from the 1.0 system.
# The 2.0 system is completely isolated and can be reset at any time without
# affecting the 1.0 system.
#
# Usage:
#   ./deploy-mining.sh up              # Start all 2.0 services
#   ./deploy-mining.sh down            # Stop all 2.0 services
#   ./deploy-mining.sh restart         # Restart all 2.0 services
#   ./deploy-mining.sh status          # Show 2.0 service status
#   ./deploy-mining.sh logs [service]  # View logs (optional: specific service)
#   ./deploy-mining.sh build           # Rebuild all 2.0 images
#
# Database Management:
#   ./deploy-mining.sh db-create       # Create 2.0 databases
#   ./deploy-mining.sh db-migrate      # Run Prisma migrations
#   ./deploy-mining.sh db-reset        # Drop and recreate 2.0 databases (DANGEROUS!)
#   ./deploy-mining.sh db-status       # Show database status
#
# CDC & Sync:
#   ./deploy-mining.sh sync-reset      # Reset CDC consumer offsets to beginning
#   ./deploy-mining.sh sync-status     # Show CDC consumer group status
#   ./deploy-mining.sh sync-start      # Start CDC sync from current position
#
# Full Reset (for development/testing):
#   ./deploy-mining.sh full-reset      # Complete reset: stop services, drop DBs, recreate, resync
#
# Health & Monitoring:
#   ./deploy-mining.sh health          # Check health of all 2.0 services
#   ./deploy-mining.sh stats           # Show system statistics
#

set -e

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

# 2.0 Services
MINING_SERVICES=(
    "contribution-service"
    "mining-service"
    "trading-service"
    "mining-admin-service"
)

# 2.0 Databases
MINING_DATABASES=(
    "rwa_contribution"
    "rwa_mining"
    "rwa_trading"
    "rwa_mining_admin"
)

# 2.0 Ports
declare -A SERVICE_PORTS=(
    ["contribution-service"]="3020"
    ["mining-service"]="3021"
    ["trading-service"]="3022"
    ["mining-admin-service"]="3023"
)

# CDC Consumer Group
CDC_CONSUMER_GROUP="contribution-service-cdc-group"

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
CYAN='\033[0;36m'
MAGENTA='\033[0;35m'
NC='\033[0m'
BOLD='\033[1m'

# ===========================================================================
# Logging Functions
# ===========================================================================
log_info() { echo -e "${GREEN}[INFO]${NC} $1"; }
log_warn() { echo -e "${YELLOW}[WARN]${NC} $1"; }
log_error() { echo -e "${RED}[ERROR]${NC} $1"; }
log_step() { echo -e "${BLUE}[STEP]${NC} $1"; }
log_success() { echo -e "${GREEN}[SUCCESS]${NC} $1"; }

print_header() {
    echo ""
    echo -e "${CYAN}╔════════════════════════════════════════════════════════════╗${NC}"
    echo -e "${CYAN}║${NC}  ${BOLD}RWA Mining Ecosystem 2.0 - Management Script${NC}             ${CYAN}║${NC}"
    echo -e "${CYAN}╚════════════════════════════════════════════════════════════╝${NC}"
    echo ""
}

print_section() {
    echo ""
    echo -e "${MAGENTA}━━━ $1 ━━━${NC}"
    echo ""
}

# ===========================================================================
# Environment Loading
# ===========================================================================
load_env() {
    if [ -f "$ENV_FILE" ]; then
        set -a
        source "$ENV_FILE"
        set +a
    else
        log_warn "No .env file found, using defaults"
    fi

    # Set defaults
    POSTGRES_HOST="${POSTGRES_HOST:-localhost}"
    POSTGRES_PORT="${POSTGRES_PORT:-5432}"
    POSTGRES_USER="${POSTGRES_USER:-postgres}"
    POSTGRES_PASSWORD="${POSTGRES_PASSWORD:-postgres}"
    KAFKA_BROKERS="${KAFKA_BROKERS:-localhost:9092}"
    REDIS_HOST="${REDIS_HOST:-localhost}"
    REDIS_PORT="${REDIS_PORT:-6379}"
}

# ===========================================================================
# Database Functions
# ===========================================================================
db_create() {
    print_section "Creating 2.0 Databases"

    for db in "${MINING_DATABASES[@]}"; do
        log_step "Creating database: $db"
        PGPASSWORD="$POSTGRES_PASSWORD" psql -h "$POSTGRES_HOST" -p "$POSTGRES_PORT" -U "$POSTGRES_USER" -d postgres -c "CREATE DATABASE $db;" 2>/dev/null || {
            log_warn "Database $db already exists or creation failed"
        }
    done

    log_success "Database creation completed"
}

db_drop() {
    print_section "Dropping 2.0 Databases"

    for db in "${MINING_DATABASES[@]}"; do
        log_step "Dropping database: $db"
        PGPASSWORD="$POSTGRES_PASSWORD" psql -h "$POSTGRES_HOST" -p "$POSTGRES_PORT" -U "$POSTGRES_USER" -d postgres -c "DROP DATABASE IF EXISTS $db WITH (FORCE);" 2>/dev/null || {
            log_warn "Failed to drop database $db"
        }
    done

    log_success "Database drop completed"
}

db_migrate() {
    print_section "Running Prisma Migrations"

    for service in "${MINING_SERVICES[@]}"; do
        service_dir="$SCRIPT_DIR/$service"
        if [ -d "$service_dir/prisma" ]; then
            log_step "Migrating: $service"
            cd "$service_dir"
            npx prisma migrate deploy 2>/dev/null || npx prisma db push --accept-data-loss
            cd "$SCRIPT_DIR"
        fi
    done

    log_success "Migrations completed"
}

db_status() {
    print_section "2.0 Database Status"

    echo -e "${BOLD}Database${NC}\t\t${BOLD}Status${NC}\t\t${BOLD}Tables${NC}"
    echo "────────────────────────────────────────────────────"

    for db in "${MINING_DATABASES[@]}"; do
        if PGPASSWORD="$POSTGRES_PASSWORD" psql -h "$POSTGRES_HOST" -p "$POSTGRES_PORT" -U "$POSTGRES_USER" -d "$db" -c "SELECT 1" &>/dev/null; then
            table_count=$(PGPASSWORD="$POSTGRES_PASSWORD" psql -h "$POSTGRES_HOST" -p "$POSTGRES_PORT" -U "$POSTGRES_USER" -d "$db" -t -c "SELECT COUNT(*) FROM information_schema.tables WHERE table_schema = 'public';" 2>/dev/null | tr -d ' ')
            echo -e "${GREEN}$db${NC}\t${GREEN}UP${NC}\t\t$table_count tables"
        else
            echo -e "${RED}$db${NC}\t\t${RED}DOWN${NC}\t\t-"
        fi
    done
}

db_reset() {
    print_section "Resetting 2.0 Databases"

    echo -e "${RED}${BOLD}WARNING: This will DELETE ALL 2.0 DATA!${NC}"
    echo "Affected databases:"
    for db in "${MINING_DATABASES[@]}"; do
        echo "  - $db"
    done
    echo ""
    read -p "Are you sure? Type 'yes' to confirm: " confirm

    if [ "$confirm" != "yes" ]; then
        log_warn "Aborted"
        return 1
    fi

    db_drop
    db_create
    db_migrate

    log_success "Database reset completed"
}

# ===========================================================================
# Service Functions
# ===========================================================================
services_up() {
    print_section "Starting 2.0 Services"

    for service in "${MINING_SERVICES[@]}"; do
        log_step "Starting: $service"
        docker-compose -f "$SCRIPT_DIR/docker-compose.yml" up -d "$service" 2>/dev/null || {
            log_warn "$service not in docker-compose, trying npm start"
            service_dir="$SCRIPT_DIR/$service"
            if [ -d "$service_dir" ]; then
                cd "$service_dir"
                nohup npm run start:prod > /tmp/$service.log 2>&1 &
                echo $! > /tmp/$service.pid
                cd "$SCRIPT_DIR"
            fi
        }
    done

    log_success "Services started"
}

services_down() {
    print_section "Stopping 2.0 Services"

    for service in "${MINING_SERVICES[@]}"; do
        log_step "Stopping: $service"
        docker-compose -f "$SCRIPT_DIR/docker-compose.yml" stop "$service" 2>/dev/null || {
            if [ -f "/tmp/$service.pid" ]; then
                kill $(cat /tmp/$service.pid) 2>/dev/null || true
                rm -f /tmp/$service.pid
            fi
        }
    done

    log_success "Services stopped"
}

services_restart() {
    services_down
    sleep 2
    services_up
}

services_status() {
    print_section "2.0 Service Status"

    echo -e "${BOLD}Service${NC}\t\t\t${BOLD}Port${NC}\t${BOLD}Status${NC}\t\t${BOLD}Health${NC}"
    echo "────────────────────────────────────────────────────────────────"

    for service in "${MINING_SERVICES[@]}"; do
        port="${SERVICE_PORTS[$service]}"

        # Check if port is listening
        if nc -z localhost "$port" 2>/dev/null; then
            status="${GREEN}RUNNING${NC}"

            # Check health endpoint
            health_response=$(curl -s -o /dev/null -w "%{http_code}" "http://localhost:$port/health" 2>/dev/null || echo "000")
            if [ "$health_response" = "200" ]; then
                health="${GREEN}HEALTHY${NC}"
            else
                health="${YELLOW}UNKNOWN${NC}"
            fi
        else
            status="${RED}STOPPED${NC}"
            health="${RED}-${NC}"
        fi

        echo -e "$service\t$port\t$status\t$health"
    done
}

services_logs() {
    local service="$1"

    if [ -n "$service" ]; then
        docker-compose -f "$SCRIPT_DIR/docker-compose.yml" logs -f "$service" 2>/dev/null || {
            if [ -f "/tmp/$service.log" ]; then
                tail -f "/tmp/$service.log"
            else
                log_error "No logs found for $service"
            fi
        }
    else
        for svc in "${MINING_SERVICES[@]}"; do
            docker-compose -f "$SCRIPT_DIR/docker-compose.yml" logs --tail=50 "$svc" 2>/dev/null || true
        done
    fi
}

services_build() {
    print_section "Building 2.0 Services"

    for service in "${MINING_SERVICES[@]}"; do
        service_dir="$SCRIPT_DIR/$service"
        if [ -d "$service_dir" ]; then
            log_step "Building: $service"
            cd "$service_dir"
            npm run build
            cd "$SCRIPT_DIR"
        fi
    done

    log_success "Build completed"
}

# ===========================================================================
# CDC / Sync Functions
# ===========================================================================
sync_reset() {
    print_section "Resetting CDC Consumer Offsets"

    echo -e "${YELLOW}This will reset the CDC consumer to read from the beginning.${NC}"
    echo "Consumer Group: $CDC_CONSUMER_GROUP"
    echo ""
    read -p "Continue? (y/n): " confirm

    if [ "$confirm" != "y" ]; then
        log_warn "Aborted"
        return 1
    fi

    # Stop contribution-service first
    log_step "Stopping contribution-service"
    docker-compose -f "$SCRIPT_DIR/docker-compose.yml" stop contribution-service 2>/dev/null || true

    # Reset offsets
    log_step "Resetting consumer group offsets"
    kafka-consumer-groups.sh --bootstrap-server "$KAFKA_BROKERS" \
        --group "$CDC_CONSUMER_GROUP" \
        --reset-offsets \
        --to-earliest \
        --all-topics \
        --execute 2>/dev/null || {
        # Try with docker
        docker exec -it kafka kafka-consumer-groups.sh --bootstrap-server localhost:9092 \
            --group "$CDC_CONSUMER_GROUP" \
            --reset-offsets \
            --to-earliest \
            --all-topics \
            --execute 2>/dev/null || log_warn "Could not reset offsets automatically"
    }

    log_success "CDC consumer offsets reset to beginning"
    log_info "Start contribution-service to begin syncing from the beginning"
}

sync_status() {
    print_section "CDC Sync Status"

    echo -e "${BOLD}Consumer Group:${NC} $CDC_CONSUMER_GROUP"
    echo ""

    kafka-consumer-groups.sh --bootstrap-server "$KAFKA_BROKERS" \
        --group "$CDC_CONSUMER_GROUP" \
        --describe 2>/dev/null || {
        docker exec -it kafka kafka-consumer-groups.sh --bootstrap-server localhost:9092 \
            --group "$CDC_CONSUMER_GROUP" \
            --describe 2>/dev/null || log_warn "Could not get consumer group status"
    }
}

# ===========================================================================
# Full Reset Function
# ===========================================================================
full_reset() {
    print_section "Full 2.0 System Reset"

    echo -e "${RED}${BOLD}╔════════════════════════════════════════════════════════════╗${NC}"
    echo -e "${RED}${BOLD}║  WARNING: This will completely reset the 2.0 system!       ║${NC}"
    echo -e "${RED}${BOLD}║                                                            ║${NC}"
    echo -e "${RED}${BOLD}║  - Stop all 2.0 services                                   ║${NC}"
    echo -e "${RED}${BOLD}║  - Drop all 2.0 databases                                  ║${NC}"
    echo -e "${RED}${BOLD}║  - Recreate databases                                      ║${NC}"
    echo -e "${RED}${BOLD}║  - Run migrations                                          ║${NC}"
    echo -e "${RED}${BOLD}║  - Reset CDC consumer offsets                              ║${NC}"
    echo -e "${RED}${BOLD}║  - Restart services (will sync from 1.0)                   ║${NC}"
    echo -e "${RED}${BOLD}║                                                            ║${NC}"
    echo -e "${RED}${BOLD}║  This will NOT affect the 1.0 system in any way.           ║${NC}"
    echo -e "${RED}${BOLD}╚════════════════════════════════════════════════════════════╝${NC}"
    echo ""
    read -p "Type 'RESET' to confirm: " confirm

    if [ "$confirm" != "RESET" ]; then
        log_warn "Aborted"
        return 1
    fi

    echo ""
    log_step "Step 1/6: Stopping 2.0 services..."
    services_down

    log_step "Step 2/6: Dropping 2.0 databases..."
    db_drop

    log_step "Step 3/6: Creating 2.0 databases..."
    db_create

    log_step "Step 4/6: Running migrations..."
    db_migrate

    log_step "Step 5/6: Resetting CDC consumer offsets..."
    kafka-consumer-groups.sh --bootstrap-server "$KAFKA_BROKERS" \
        --group "$CDC_CONSUMER_GROUP" \
        --reset-offsets \
        --to-earliest \
        --all-topics \
        --execute 2>/dev/null || {
        docker exec kafka kafka-consumer-groups.sh --bootstrap-server localhost:9092 \
            --group "$CDC_CONSUMER_GROUP" \
            --reset-offsets \
            --to-earliest \
            --all-topics \
            --execute 2>/dev/null || log_warn "Could not reset offsets, may need manual reset"
    }

    log_step "Step 6/6: Starting 2.0 services..."
    services_up

    echo ""
    echo -e "${GREEN}${BOLD}╔════════════════════════════════════════════════════════════╗${NC}"
    echo -e "${GREEN}${BOLD}║  Full reset completed successfully!                        ║${NC}"
    echo -e "${GREEN}${BOLD}║                                                            ║${NC}"
    echo -e "${GREEN}${BOLD}║  The 2.0 system will now sync all data from 1.0 via CDC.   ║${NC}"
    echo -e "${GREEN}${BOLD}║  Monitor with: ./deploy-mining.sh logs contribution-service║${NC}"
    echo -e "${GREEN}${BOLD}╚════════════════════════════════════════════════════════════╝${NC}"
}

# ===========================================================================
# Health Check Function
# ===========================================================================
health_check() {
    print_section "2.0 System Health Check"

    local all_healthy=true

    # Check databases
    echo -e "${BOLD}Databases:${NC}"
    for db in "${MINING_DATABASES[@]}"; do
        if PGPASSWORD="$POSTGRES_PASSWORD" psql -h "$POSTGRES_HOST" -p "$POSTGRES_PORT" -U "$POSTGRES_USER" -d "$db" -c "SELECT 1" &>/dev/null; then
            echo -e "  ${GREEN}✓${NC} $db"
        else
            echo -e "  ${RED}✗${NC} $db"
            all_healthy=false
        fi
    done

    echo ""
    echo -e "${BOLD}Services:${NC}"
    for service in "${MINING_SERVICES[@]}"; do
        port="${SERVICE_PORTS[$service]}"
        health_response=$(curl -s -o /dev/null -w "%{http_code}" "http://localhost:$port/health" 2>/dev/null || echo "000")
        if [ "$health_response" = "200" ]; then
            echo -e "  ${GREEN}✓${NC} $service (port $port)"
        else
            echo -e "  ${RED}✗${NC} $service (port $port)"
            all_healthy=false
        fi
    done

    echo ""
    echo -e "${BOLD}Infrastructure:${NC}"
    # Kafka
    if nc -z ${KAFKA_BROKERS%%:*} ${KAFKA_BROKERS##*:} 2>/dev/null; then
        echo -e "  ${GREEN}✓${NC} Kafka ($KAFKA_BROKERS)"
    else
        echo -e "  ${RED}✗${NC} Kafka ($KAFKA_BROKERS)"
        all_healthy=false
    fi

    # Redis
    if nc -z "$REDIS_HOST" "$REDIS_PORT" 2>/dev/null; then
        echo -e "  ${GREEN}✓${NC} Redis ($REDIS_HOST:$REDIS_PORT)"
    else
        echo -e "  ${RED}✗${NC} Redis ($REDIS_HOST:$REDIS_PORT)"
        all_healthy=false
    fi

    echo ""
    if [ "$all_healthy" = true ]; then
        echo -e "${GREEN}${BOLD}All systems healthy!${NC}"
    else
        echo -e "${RED}${BOLD}Some systems are unhealthy!${NC}"
        return 1
    fi
}

# ===========================================================================
# Statistics Function
# ===========================================================================
show_stats() {
    print_section "2.0 System Statistics"

    for db in "${MINING_DATABASES[@]}"; do
        echo -e "${BOLD}Database: $db${NC}"

        if PGPASSWORD="$POSTGRES_PASSWORD" psql -h "$POSTGRES_HOST" -p "$POSTGRES_PORT" -U "$POSTGRES_USER" -d "$db" -c "SELECT 1" &>/dev/null; then
            # Get table row counts
            PGPASSWORD="$POSTGRES_PASSWORD" psql -h "$POSTGRES_HOST" -p "$POSTGRES_PORT" -U "$POSTGRES_USER" -d "$db" -t -c "
                SELECT tablename AS table,
                       pg_size_pretty(pg_total_relation_size(schemaname || '.' || tablename)) AS size
                FROM pg_tables
                WHERE schemaname = 'public'
                ORDER BY pg_total_relation_size(schemaname || '.' || tablename) DESC
                LIMIT 10;
            " 2>/dev/null || echo "  Could not get table stats"
        else
            echo "  Database not available"
        fi
        echo ""
    done
}

# ===========================================================================
# Help Function
# ===========================================================================
show_help() {
    print_header

    echo "Usage: $0 <command> [options]"
    echo ""
    echo -e "${BOLD}Service Management:${NC}"
    echo "  up              Start all 2.0 services"
    echo "  down            Stop all 2.0 services"
    echo "  restart         Restart all 2.0 services"
    echo "  status          Show service status"
    echo "  logs [service]  View logs (optionally for specific service)"
    echo "  build           Build all 2.0 services"
    echo ""
    echo -e "${BOLD}Database Management:${NC}"
    echo "  db-create       Create 2.0 databases"
    echo "  db-migrate      Run Prisma migrations"
    echo "  db-reset        Drop and recreate databases ${RED}(DANGEROUS!)${NC}"
    echo "  db-status       Show database status"
    echo ""
    echo -e "${BOLD}CDC / Sync Management:${NC}"
    echo "  sync-reset      Reset CDC consumer to read from beginning"
    echo "  sync-status     Show CDC consumer group status"
    echo ""
    echo -e "${BOLD}Full Reset:${NC}"
    echo "  full-reset      Complete system reset ${RED}(DANGEROUS!)${NC}"
    echo "                  Drops DBs, resets CDC, restarts services"
    echo ""
    echo -e "${BOLD}Health & Monitoring:${NC}"
    echo "  health          Check health of all 2.0 components"
    echo "  stats           Show system statistics"
    echo ""
    echo -e "${BOLD}2.0 Services:${NC}"
    for service in "${MINING_SERVICES[@]}"; do
        echo "  - $service (port ${SERVICE_PORTS[$service]})"
    done
    echo ""
    echo -e "${BOLD}2.0 Databases:${NC}"
    for db in "${MINING_DATABASES[@]}"; do
        echo "  - $db"
    done
    echo ""
    echo -e "${YELLOW}Note: The 2.0 system is completely isolated from 1.0.${NC}"
    echo -e "${YELLOW}Any reset operation will NOT affect the 1.0 system.${NC}"
}

# ===========================================================================
# Main
# ===========================================================================
main() {
    load_env

    case "${1:-}" in
        # Service commands
        up)
            services_up
            ;;
        down)
            services_down
            ;;
        restart)
            services_restart
            ;;
        status)
            print_header
            services_status
            ;;
        logs)
            services_logs "$2"
            ;;
        build)
            services_build
            ;;

        # Database commands
        db-create)
            db_create
            ;;
        db-migrate)
            db_migrate
            ;;
        db-reset)
            db_reset
            ;;
        db-status)
            print_header
            db_status
            ;;

        # Sync commands
        sync-reset)
            sync_reset
            ;;
        sync-status)
            sync_status
            ;;

        # Full reset
        full-reset)
            print_header
            full_reset
            ;;

        # Health & monitoring
        health)
            print_header
            health_check
            ;;
        stats)
            print_header
            show_stats
            ;;

        # Help
        help|--help|-h|"")
            show_help
            ;;

        *)
            log_error "Unknown command: $1"
            echo ""
            show_help
            exit 1
            ;;
    esac
}

main "$@"