#!/usr/bin/env bash
set -euo pipefail

BAR_WIDTH=50
SLEEP_INTERVAL=0.05
CLEAR_LINE="\033[K"
LOG_FILE="/var/log/laravel_deploy.log"

GREEN="\033[32m"
RESET="\033[0m"

STEPS=(
    "Pull latest code"
    "Maintenance mode"
    "Restart PHP-FPM"
    "Clear caches"
    "Optimize app"
    "Set permissions"
    "Ensure queue running"
    "Reset OPcache"
    "Bring app online"
    "Check php-fpm"
    "Check paymenter"
)

CMDS=(
    "git pull --rebase --autostash --quiet"
    "php artisan down --render='errors::503' --retry=60 --quiet || true"
    "systemctl restart php8.3-fpm.service"
    "php artisan optimize:clear --quiet"
    "php artisan optimize --quiet"
    "find storage bootstrap/cache -not -perm 775 -type d -exec chmod 775 {} + -o -not -perm 664 -type f -exec chmod 664 {} +; chown -R www-data:www-data storage bootstrap/cache"
    "if ! pgrep -f 'artisan queue:work' >/dev/null; then nohup php artisan queue:work --daemon --quiet >> /dev/null 2>&1 & fi"
    "php -r 'if(function_exists(\"opcache_reset\")) opcache_reset();' 2>/dev/null || true"
    "php artisan up --quiet"
    "systemctl is-active --quiet php8.3-fpm || systemctl restart php8.3-fpm"
    "systemctl is-active --quiet paymenter.service || systemctl restart paymenter.service"
)

rollback(){
    echo -e "\n\033[31m✘ Deployment failed. Rolling back...\033[0m"
    git reset --hard HEAD@{1} >> "$LOG_FILE" 2>&1
    php artisan up || true
    exit 1
}
trap rollback ERR

draw_bar() {
    local percent=$1
    local width=$2
    local text="$3"

    # Strip color codes for length calculation
    local clean_text=$(echo -ne "$text" | sed 's/\x1b\[[0-9;]*m//g')

    [ ${#clean_text} -gt $width ] && clean_text="${clean_text:0:$width}"

    local filled=$(( percent * width / 100 ))
    [ $filled -gt $width ] && filled=$width

    local text_start=$(( (width - ${#clean_text}) / 2 ))
    local text_end=$(( text_start + ${#clean_text} ))

    local bar=""
    for ((i=0;i<width;i++)); do
        if (( i >= text_start && i < text_end )); then
            bar+="${clean_text:i-text_start:1}"
        else
            if (( i < filled )); then
                bar+="#"
            else
                bar+="-"
            fi
        fi
    done

    printf "[%s] %3d%%" "$bar" "$percent"
}

run_deployment() {
    local total_steps=${#STEPS[@]}

    for i in "${!STEPS[@]}"; do
        step_name="${STEPS[$i]}"
        cmd="${CMDS[$i]}"
        step_percent_start=$(( i * 100 / total_steps ))
        step_percent_end=$(( (i+1) * 100 / total_steps ))

        bash -c "$cmd" > >(tee -a "$LOG_FILE") 2> >(tee -a "$LOG_FILE" >&2) &
        pid=$!

        percent=$step_percent_start
        while kill -0 "$pid" 2>/dev/null; do
            [ "$percent" -lt "$step_percent_end" ] && percent=$((percent+1))
            echo -ne "\r$(draw_bar $percent $BAR_WIDTH "$step_name")$CLEAR_LINE"
            sleep "$SLEEP_INTERVAL"
        done
        wait "$pid"

        # Fill bar to end of step
        echo -ne "\r$(draw_bar $step_percent_end $BAR_WIDTH "$step_name")$CLEAR_LINE"
    done

    # Final green completion bar
    final_text="Deployment Complete"
    # Construct bar normally
    bar=$(draw_bar 100 $BAR_WIDTH "$final_text")
    # Replace the visible text in the middle with green text
    clean_text_len=${#final_text}
    start=$(( (BAR_WIDTH - clean_text_len) / 2 + 1 )) # +1 for the [
    end=$(( start + clean_text_len - 1 ))
    colored_bar="${bar:0:start-1}${GREEN}${final_text}${RESET}${bar:end}"
    echo -e "\r$colored_bar$CLEAR_LINE"
    echo "Log: $LOG_FILE"
}

run_deployment