#!/bin/sh
set -eu

umask 077

TEMP_DIR="$(mktemp -d "${TMPDIR:-/tmp}/aiturk-install.XXXXXX")"
INSTALLER="$TEMP_DIR/install.py"
cleanup() {
    case "$TEMP_DIR" in
        "${TMPDIR:-/tmp}"/aiturk-install.*) rm -rf -- "$TEMP_DIR" ;;
        *) echo 'Gecici kurulum yolu dogrulanamadi.' >&2 ;;
    esac
}
trap cleanup EXIT HUP INT TERM

bootstrap_python() {
    machine=$(uname -m)
    system=$(uname -s)
    case "$system:$machine" in
        Darwin:arm64|Darwin:aarch64) target=aarch64-apple-darwin; digest=b9054a9d3d54f4cb5573d44907fddb29874b08909bde73f29f2868cf872223ee; size=25293188 ;;
        Darwin:x86_64) target=x86_64-apple-darwin; digest=49f0d97f506b855eed60b74a8ac138595c5b39799a6aa5e0d7ca8abe1019a4d4; size=25037769 ;;
        Linux:aarch64|Linux:arm64) target=aarch64-unknown-linux-gnu; digest=76ed18125286d7dc96ce24023d1e319dbd55a89a767102411b1ea23846113f69; size=91086530 ;;
        Linux:x86_64) target=x86_64-unknown-linux-gnu; digest=0651dd7157d3debf769e15a52c1de9de7fbcdc36ba72faf79fde3c44f14d9461; size=119758082 ;;
        *) echo 'Desteklenmeyen sistem. macOS veya glibc tabanli Linux, x64/ARM64 gerekli.' >&2; return 1 ;;
    esac
    runtime_parent="${XDG_DATA_HOME:-$HOME/.local/share}/turkservis/bootstrap"
    runtime="$runtime_parent/cpython-3.13.15-20260901-$target"
    PYTHON="$runtime/bin/python3"
    if [ -f "$PYTHON" ]; then
        "$PYTHON" -I -c 'import pip,ssl,venv,sys; assert sys.version_info[:3] == (3,13,15)' || return 1
        return
    fi
    if [ -e "$runtime" ] || [ -L "$runtime" ] || [ -L "$runtime_parent" ]; then
        echo 'Calisma ortami klasoru eksik, baglantili veya baska bir kurulum tarafindan kullaniliyor.' >&2
        return 1
    fi
    archive="$TEMP_DIR/runtime.tar.gz"
    echo 'AITURK ozel calisma ortami indiriliyor; ayrica Python/pip kurmaniz gerekmiyor.' >&2
    curl --proto '=https' --proto-redir '=https' --tlsv1.2 -fLsS \
        "https://github.com/astral-sh/python-build-standalone/releases/download/20260901/cpython-3.13.15%2B20260901-$target-install_only.tar.gz" -o "$archive"
    actual_size=$(wc -c < "$archive" | tr -d ' ')
    if command -v sha256sum >/dev/null 2>&1; then
        actual_digest=$(sha256sum "$archive" | cut -d ' ' -f 1)
    else
        actual_digest=$(shasum -a 256 "$archive" | cut -d ' ' -f 1)
    fi
    if [ "$actual_size" != "$size" ] || [ "$actual_digest" != "$digest" ]; then
        echo 'Calisma ortami boyutu veya SHA-256 dogrulamasi basarisiz.' >&2
        return 1
    fi
    tar -xzf "$archive" -C "$TEMP_DIR"
    "$TEMP_DIR/python/bin/python3" -I -c 'import pip,ssl,venv,sys; assert sys.version_info[:3] == (3,13,15)'
    mkdir -p "$runtime_parent"
    # Move within the private runtime directory; never replace another install.
    if [ -e "$runtime" ] || [ -L "$runtime" ]; then
        echo 'Baska bir kurulum calisma ortamini olusturdu; yeniden deneyin.' >&2
        return 1
    fi
    mv "$TEMP_DIR/python" "$runtime"
}

PYTHON=
for candidate in python3.13 python3.12 python3.11 python3; do
    if command -v "$candidate" >/dev/null 2>&1 &&
        "$candidate" -c "import pip,platform,sys; raise SystemExit(0 if platform.python_implementation() == 'CPython' and (3, 11) <= sys.version_info[:2] < (3, 14) else 1)" >/dev/null 2>&1; then
        PYTHON=$candidate
        break
    fi
done
if [ -z "$PYTHON" ]; then
    bootstrap_python
fi

curl --proto '=https' --tlsv1.2 -fsS "https://turkservis.online/install.py" -o "$INSTALLER"
"$PYTHON" "$INSTALLER"