#!/usr/bin/env sh
# ntcp installer for Linux and macOS.
#
# Usage (one-liner via 3kr.org short URL):
#     curl -fsSL 3kr.org/install | sudo sh
#
# Direct (raw GitHub):
#     curl -fsSL https://raw.githubusercontent.com/muslu/nettransfer/main/install.sh | sudo sh
#
# Override the binary URL via:
#     NTCP_BIN_URL=https://example.com/ntcp-linux-amd64 sudo sh install.sh

set -eu

# ANSI colors — store the ESC character literally (not the '\033' string)
# so that downstream `%s`/echo prints render them as escape codes.
# Disabled when stderr is not a tty (piped to a log, etc.).
if [ -t 2 ] && [ -z "${NO_COLOR:-}" ]; then
    ESC=$(printf '\033')
    C_RESET="${ESC}[0m";  C_BOLD="${ESC}[1m";   C_DIM="${ESC}[2m"
    C_RED="${ESC}[31m";   C_GREEN="${ESC}[32m"; C_YELLOW="${ESC}[33m"
    C_BLUE="${ESC}[34m";  C_CYAN="${ESC}[36m";  C_BCYAN="${ESC}[96m"
else
    C_RESET=''; C_BOLD=''; C_DIM=''; C_RED=''; C_GREEN=''
    C_YELLOW=''; C_BLUE=''; C_CYAN=''; C_BCYAN=''
fi

printf '%s\n' "$C_BCYAN"
cat <<'EOF'
   ███╗   ██╗████████╗ ██████╗██████╗
   ████╗  ██║╚══██╔══╝██╔════╝██╔══██╗
   ██╔██╗ ██║   ██║   ██║     ██████╔╝
   ██║╚██╗██║   ██║   ██║     ██╔═══╝
   ██║ ╚████║   ██║   ╚██████╗██║
   ╚═╝  ╚═══╝   ╚═╝    ╚═════╝╚═╝
EOF
printf '%s%s   secure resumable file transfer%s\n\n' "$C_RESET" "$C_DIM" "$C_RESET"

step()    { printf '  %s→%s %s\n' "$C_CYAN"   "$C_RESET" "$1"; }
okmsg()   { printf '  %s✓%s %s\n' "$C_GREEN"  "$C_RESET" "$1"; }
warn()    { printf '  %s!%s %s\n' "$C_YELLOW" "$C_RESET" "$1"; }
errfail() { printf '  %s✗%s %s\n' "$C_RED"    "$C_RESET" "$1"; exit 1; }

if [ "$(id -u)" != "0" ]; then
    errfail "ntcp installer must run as root (use sudo)."
fi

OS="$(uname -s | tr '[:upper:]' '[:lower:]')"
ARCH="$(uname -m)"
case "$ARCH" in
    x86_64|amd64)        ARCH=amd64 ;;
    aarch64|arm64)       ARCH=arm64 ;;
    *) errfail "unsupported architecture: $ARCH" ;;
esac
case "$OS" in
    linux|darwin) ;;
    *) errfail "this installer supports linux and macOS only; use install.ps1 on Windows" ;;
esac

step "detected ${C_BOLD}${OS}/${ARCH}${C_RESET}"

# GitHub Releases host the per-platform binaries. CI publishes them on every
# `v*` tag. The `latest/download/` path always resolves to the most recent.
BASE_URL="${NTCP_BASE_URL:-https://github.com/muslu/nettransfer/releases/latest/download}"
BIN_URL="${NTCP_BIN_URL:-${BASE_URL}/ntcp-${OS}-${ARCH}}"

DEST="/usr/local/bin/ntcp"
TMP="$(mktemp -d)"
trap 'rm -rf "$TMP"' EXIT

step "downloading ${C_DIM}${BIN_URL}${C_RESET}"
if command -v curl >/dev/null 2>&1; then
    curl -#fSL --proto '=https' --tlsv1.2 -o "$TMP/ntcp" "$BIN_URL"
elif command -v wget >/dev/null 2>&1; then
    wget --https-only --show-progress -q -O "$TMP/ntcp" "$BIN_URL"
else
    errfail "need curl or wget to download"
fi

chmod +x "$TMP/ntcp"
mv "$TMP/ntcp" "$DEST"
okmsg "installed binary at ${C_BOLD}${DEST}${C_RESET}"

step "registering service and generating first token"
"$DEST" install

printf '\n'
printf '  %s┌─ Token modu seçimi%s\n' "$C_CYAN" "$C_RESET"
printf '  %s│%s  %ssudo ntcp init%s\n' "$C_CYAN" "$C_RESET" "$C_GREEN" "$C_RESET"
printf '  %s│%s    %s[1]%s Kalıcı  — token süresiz geçerli\n' "$C_CYAN" "$C_RESET" "$C_BOLD" "$C_RESET"
printf '  %s│%s    %s[2]%s Süreli  — TTL ile otomatik geçersiz (örn. 1h, 24h, 7d)\n' "$C_CYAN" "$C_RESET" "$C_BOLD" "$C_RESET"
printf '  %s│%s\n' "$C_CYAN" "$C_RESET"
printf '  %s│%s  %snot:%s atlanırsa kurulumdaki token kalıcı olarak saklanır.\n' "$C_CYAN" "$C_RESET" "$C_DIM" "$C_RESET"
printf '  %s└─%s\n' "$C_CYAN" "$C_RESET"
printf '\n'
printf '  %sℹ%s  Daha fazla bilgi: %shttps://github.com/muslu/nettransfer%s\n\n' "$C_BLUE" "$C_RESET" "$C_DIM" "$C_RESET"