#!/bin/bash
# lib/steps/preflight.sh — verificaciones previas
step_preflight() {
    print_section "Pre-flight"
    log_step "System checks" 1 $TOTAL_STEPS

    _preflight_user
    _preflight_python
    _preflight_git
}

_preflight_user() {
    log_info "Running as: ${USER} (uid=$(id -u))"
    if [ "$(id -u)" -eq 0 ]; then
        log_error "No correr el installer como root"
        exit 1
    fi
    log_ok "User OK"
}

_preflight_python() {
    local found=""
    for candidate in python3.12 python3.13; do
        if command -v "$candidate" &>/dev/null; then
            found="$candidate"
            break
        fi
    done
    if [ -z "$found" ]; then
        log_error "Se necesita Python 3.12 o 3.13"
        log_info "Arch: sudo pacman -S python312"
        log_info "Ubuntu: sudo apt install python3.12"
        exit 1
    fi
    PYTHON_BIN="$found"
    log_ok "Python: $($PYTHON_BIN --version 2>&1)"
}

_preflight_git() {
    if ! command -v git &>/dev/null; then
        log_error "git no encontrado"
        exit 1
    fi
    log_ok "git: $(git --version)"
}