#!/usr/bin/env bash
# install.sh — one-command installer for Goosemusic.
#
# Usage:
#   curl -fsSL https://raw.githubusercontent.com/GooseOb/music_plr/master/scripts/install.sh | bash
#
# Installs to:
#   Linux:   ~/.local/bin/goosemusic  + desktop integration files
#   macOS:   /Applications/Goosemusic.app
#   Windows: not supported (use the .zip from GitHub Releases)
set -euo pipefail

REPO="GooseOb/music_plr"
INSTALL_DIR="${INSTALL_DIR:-$HOME/.local/bin}"

red() { printf '\033[1;31m%s\033[0m\n' "$*" >&2; }
green() { printf '\033[1;32m%s\033[0m\n' "$*"; }

info() { green "  $*"; }
err() {
	red "error: $*" >&2
	exit 1
}

need() {
	command -v "$1" >/dev/null 2>&1 || err "$1 is required but not found"
}

# ── Platform detection ────────────────────────────────────────

detect_platform() {
	local os arch

	case "$(uname -s)" in
	Linux*) os="linux" ;;
	Darwin*) os="darwin" ;;
	MINGW* | MSYS* | CYGWIN*)
		err "Windows is not supported by this script. Download the .zip from:
  https://github.com/$REPO/releases/latest"
		;;
	*) err "unsupported OS: $(uname -s)" ;;
	esac

	case "$(uname -m)" in
	x86_64 | amd64) arch="x86_64" ;;
	aarch64 | arm64) arch="aarch64" ;;
	*) err "unsupported architecture: $(uname -m)" ;;
	esac

	echo "${os}_${arch}"
}

# ── Download latest release asset ─────────────────────────────

download_release() {
	local platform="$1" asset_name tmpdir archive

	case "$platform" in
	linux_*) asset_name="goosemusic-${platform}.tar.gz" ;;
	darwin_*) asset_name="Goosemusic-${platform}.tar.gz" ;;
	*) err "unsupported platform: $platform" ;;
	esac

	need curl
	need tar

	tmpdir="$(mktemp -d)"
	trap 'rm -rf "$tmpdir"' EXIT

	info "Fetching latest release..."
	archive="$tmpdir/$asset_name"

	curl -fsSL "https://github.com/$REPO/releases/latest/download/$asset_name" \
		-o "$archive" ||
		err "download failed — check https://github.com/$REPO/releases"

	info "Extracting..."
	tar -xzf "$archive" -C "$tmpdir"

	echo "$tmpdir"
}

# ── Install ───────────────────────────────────────────────────

install_linux() {
	local tmpdir="$1"

	mkdir -p "$INSTALL_DIR"
	cp "$tmpdir/goosemusic" "$INSTALL_DIR/"
	chmod +x "$INSTALL_DIR/goosemusic"
	info "Binary  → $INSTALL_DIR/goosemusic"

	if [ -f "$tmpdir/goosemusic.desktop" ]; then
		local share="${XDG_DATA_HOME:-$HOME/.local/share}"
		mkdir -p "$share/applications" "$share/icons"
		cp "$tmpdir/goosemusic.desktop" "$share/applications/"
		[ -f "$tmpdir/icons/logo.svg" ] && cp "$tmpdir/icons/logo.svg" "$share/icons/goosemusic.svg"
		info "Desktop → $share/applications/goosemusic.desktop"
		info "Icon    → $share/icons/goosemusic.svg"
	fi
}

install_macos() {
	local tmpdir="$1"

	if [ -d "$tmpdir/Goosemusic.app" ]; then
		rm -rf /Applications/Goosemusic.app
		cp -R "$tmpdir/Goosemusic.app" /Applications/
		info "App     → /Applications/Goosemusic.app"
	else
		err "Goosemusic.app not found in the release archive"
	fi
}

# ── Main ──────────────────────────────────────────────────────

main() {
	echo ""
	green "Goosemusic installer"
	echo ""

	local platform
	platform="$(detect_platform)"
	info "Platform: $platform"

	local tmpdir
	tmpdir="$(download_release "$platform")"

	case "$platform" in
	linux_*) install_linux "$tmpdir" ;;
	darwin_*) install_macos "$tmpdir" ;;
	esac

	echo ""
	green "Done!"
	case "$platform" in
	linux_*)
		echo ""
		if echo "$PATH" | tr ':' '\n' | grep -qx "$INSTALL_DIR"; then
			info "Run: goosemusic"
		else
			info "Run: $INSTALL_DIR/goosemusic"
			info "Or add to PATH: export PATH=\"$INSTALL_DIR:\$PATH\""
		fi
		;;
	darwin*)
		info "Open Goosemusic from Applications or Spotlight"
		;;
	esac
	echo ""
}

main