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

BAR_WIDTH=50
SLEEP_INTERVAL=0.05
CLEAR_LINE="\033[K"

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

# Keep track of Git HEAD for summary
OLD_HEAD=$(git rev-parse HEAD 2>/dev/null || echo "")

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

CMDS=(
    "git pull --rebase --autostash --quiet"
    "php artisan down --render='errors::503' --retry=60 --quiet || true"
    "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"
    "systemctl restart php8.3-fpm.service"
    "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"
    "systemctl restart nginx"
)


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

# Draw a progress bar with centered text
draw_bar() {
    local percent=$1
    local width=$2
    local text="$3"

    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 ))

        # Run the command: output hidden, bar stays clean
        bash -c "$cmd" > /dev/null 2>&1 &
        pid=$!

        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"

        echo -ne "\r$(draw_bar $step_percent_end $BAR_WIDTH "$step_name")$CLEAR_LINE"
    done

    # Final green completion bar
    final_text="Deployment Complete"
    final_bar=$(draw_bar 100 $BAR_WIDTH "$final_text")

    # Center green text inside the bar
    text_len=${#final_text}
    bar_only=${final_bar:1:BAR_WIDTH}  # strip leading '['
    start=$(( (BAR_WIDTH - text_len) / 2 ))
    end=$(( start + text_len ))
    green_bar="${final_bar:0:start+1}${GREEN}${final_text}${RESET}${final_bar:end+1}"

    echo -e "\r$green_bar$CLEAR_LINE"

    # Git summary
    if [ -n "$OLD_HEAD" ]; then
        NEW_HEAD=$(git rev-parse HEAD)
        if [ "$OLD_HEAD" != "$NEW_HEAD" ]; then
            echo -e "Git changes since last deploy:"
            git diff --shortstat "$OLD_HEAD" "$NEW_HEAD"
        else
            echo -e "No Git changes were applied."
        fi
    else
        echo -e "Git repository initialized."
    fi
}

run_deployment