#!/usr/bin/env bash
# lib/render.sh — envsubst-based template rendering

# render_templates REPO_DIR
# Finds all *.tpl files under REPO_DIR and renders them (output: same path without .tpl)
render_templates() {
  local repo_dir="$1"
  step "Rendering templates"

  # Ensure gettext (envsubst) is available
  if ! has_cmd envsubst; then
    if is_macos; then
      warn "envsubst not found — installing gettext via Homebrew..."
      brew install gettext
      export PATH="/opt/homebrew/opt/gettext/bin:$PATH"
    else
      sudo apt-get install -y gettext-base 2>/dev/null
    fi
  fi

  local count=0
  while IFS= read -r tpl; do
    local out="${tpl%.tpl}"
    envsubst < "$tpl" > "$out"
    success "Rendered $(basename "$out")"
    ((count++))
  done < <(find "$repo_dir" -name "*.tpl" -not -path "*/.git/*")

  info "$count template(s) rendered."
}