#!/bin/bash

RESET="\033[0m"
BOLD="\033[1m"
DIM="\033[2m"

BLACK="\033[0;30m"
RED="\033[0;31m"
GREEN="\033[0;32m"
YELLOW="\033[0;33m"
BLUE="\033[0;34m"
CYAN="\033[0;36m"
WHITE="\033[0;37m"

BRED="\033[1;31m"
BGREEN="\033[1;32m"
BYELLOW="\033[1;33m"
BBLUE="\033[1;34m"
BCYAN="\033[1;36m"
BWHITE="\033[1;37m"

print_header() {
    local title="${1:-INSTALLER}"
    local version="${2:-}"
    local width=60
    local line
    printf -v line '%*s' "$width" ''
    line="${line// /─}"

    echo ""
    printf "${BCYAN}${line}${RESET}\n"
    printf "${BCYAN}  %-56s${RESET}\n" ""
    printf "${BCYAN}  ${BWHITE}%-54s${BCYAN}  ${RESET}\n" "$title ${DIM}${version}${RESET}"
    printf "${BCYAN}  %-56s${RESET}\n" ""
    printf "${BCYAN}${line}${RESET}\n"
    echo ""
}

print_section() {
    local label="$1"
    echo ""
    printf "${DIM}${CYAN}┌─${RESET} ${BWHITE}${label}${RESET}\n"
}

print_divider() {
    printf "${DIM}────────────────────────────────────────────────────────────${RESET}\n"
}

label_ok()         { printf "  ${BGREEN}[  OK  ]${RESET}  %s\n" "$1"; }
label_warn()       { printf "  ${BYELLOW}[ WARN ]${RESET}  %s\n" "$1"; }
label_error()      { printf "  ${BRED}[ ERROR]${RESET}  %s\n" "$1"; }
label_info()       { printf "  ${BCYAN}[ INFO ]${RESET}  %s\n" "$1"; }
label_skip()       { printf "  ${DIM}[ SKIP ]${RESET}  %s\n" "$1"; }
label_simple()     { printf "  ${DIM}[SIMPLE]${RESET}  %s\n" "$1"; }
label_connected()  { printf "  ${BGREEN}[CONNECTED   ]${RESET}  %s\n" "$1"; }
label_disconnect() { printf "  ${BRED}[DISCONNECTED]${RESET}  %s\n" "$1"; }
label_step()       { printf "  ${BBLUE}[ %-2s/%-2s ]${RESET}  %s\n" "$2" "$3" "$1"; }

progress_bar() {
    local current=$1
    local total=$2
    local label="${3:-}"
    local width=40
    local filled=$(( current * width / total ))
    local empty=$(( width - filled ))
    local pct=$(( current * 100 / total ))

    local bar_filled bar_empty
    printf -v bar_filled '%*s' "$filled" ''
    printf -v bar_empty  '%*s' "$empty"  ''
    bar_filled="${bar_filled// /#}"
    bar_empty="${bar_empty// /·}"

    printf "\r  ${DIM}[${RESET}${BGREEN}${bar_filled}${RESET}${DIM}${bar_empty}${RESET}${DIM}]${RESET} ${BWHITE}%3d%%${RESET}  ${DIM}%s${RESET}   " \
        "$pct" "$label"
}

progress_simulate() {
    local steps="${1:-20}"
    local label="${2:-loading}"
    for i in $(seq 1 "$steps"); do
        progress_bar "$i" "$steps" "$label"
        sleep 0.04
    done
    echo ""
}

SPINNER_PID=""

start_spinner() {
    local msg="${1:-Processing...}"
    local frames=('─' '\\' '│' '/')
    (
        local i=0
        while true; do
            printf "\r  ${BCYAN}${frames[$i]}${RESET}  ${DIM}%s${RESET}   " "$msg"
            i=$(( (i + 1) % 4 ))
            sleep 0.1
        done
    ) &
    SPINNER_PID=$!
    disown "$SPINNER_PID" 2>/dev/null
}

stop_spinner() {
    local result_msg="${1:-}"
    if [ -n "$SPINNER_PID" ]; then
        kill "$SPINNER_PID" 2>/dev/null
        wait "$SPINNER_PID" 2>/dev/null
        SPINNER_PID=""
    fi
    printf "\r%*s\r" 60 "" 
    [ -n "$result_msg" ] && label_ok "$result_msg"
}