init repo

scripts/check-requirements.sh

@@ -0,0 +1,176 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+MODE="native"
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --mode)
+      MODE="${2:-}"
+      shift 2
+      ;;
+    *)
+      echo "usage: $0 --mode <native|nix-host|nix-shell>"
+      exit 2
+      ;;
+  esac
+done
+
+if [[ -z "${MODE}" ]]; then
+  echo "error: --mode is required"
+  exit 2
+fi
+
+OS="$(uname -s)"
+FAILED=0
+
+print_install_hint() {
+  local cmd="$1"
+
+  if [[ "${OS}" == "Darwin" ]]; then
+    case "${cmd}" in
+      nix) echo "  install: sh <(curl -L https://nixos.org/nix/install) --daemon" ;;
+      cargo|rustc|rustup) echo "  install: curl https://sh.rustup.rs -sSf | sh" ;;
+      just) echo "  install: brew install just" ;;
+      rg) echo "  install: brew install ripgrep" ;;
+      fd) echo "  install: brew install fd" ;;
+      tree) echo "  install: brew install tree" ;;
+      cargo-watch) echo "  install: cargo install cargo-watch" ;;
+      cargo-nextest) echo "  install: cargo install cargo-nextest --locked" ;;
+      *) echo "  install: use your package manager to install '${cmd}'" ;;
+    esac
+    return
+  fi
+
+  case "${cmd}" in
+    nix) echo "  install: sh <(curl -L https://nixos.org/nix/install) --daemon" ;;
+    cargo|rustc|rustup) echo "  install: curl https://sh.rustup.rs -sSf | sh" ;;
+    just) echo "  install: sudo apt update && sudo apt install -y just" ;;
+    rg) echo "  install: sudo apt update && sudo apt install -y ripgrep" ;;
+    fd) echo "  install: sudo apt update && sudo apt install -y fd-find" ;;
+    tree) echo "  install: sudo apt update && sudo apt install -y tree" ;;
+    cargo-watch) echo "  install: cargo install cargo-watch" ;;
+    cargo-nextest) echo "  install: cargo install cargo-nextest --locked" ;;
+    *) echo "  install: use your package manager to install '${cmd}'" ;;
+  esac
+}
+
+require_cmd() {
+  local cmd="$1"
+  if command -v "${cmd}" >/dev/null 2>&1; then
+    echo "ok: ${cmd}"
+  else
+    echo "missing: ${cmd}"
+    print_install_hint "${cmd}"
+    FAILED=1
+  fi
+}
+
+warn_if_missing() {
+  local cmd="$1"
+  if command -v "${cmd}" >/dev/null 2>&1; then
+    echo "ok(optional): ${cmd}"
+  else
+    echo "missing(optional): ${cmd}"
+    print_install_hint "${cmd}"
+  fi
+}
+
+check_xcode_clt() {
+  if [[ "${OS}" != "Darwin" ]]; then
+    return
+  fi
+
+  if xcode-select -p >/dev/null 2>&1; then
+    echo "ok: xcode-command-line-tools"
+  else
+    echo "missing: xcode-command-line-tools"
+    echo "  install: xcode-select --install"
+    FAILED=1
+  fi
+}
+
+print_context_note() {
+  if [[ -f "ai/context/project-context.md" ]]; then
+    echo "ok: ai/context/project-context.md exists (generated file)"
+  else
+    echo "info: ai/context/project-context.md is generated and currently missing"
+    echo "  generate with: just context"
+    echo "  or: ./ai/scripts/build-context.sh"
+  fi
+}
+
+check_native() {
+  echo "mode: native"
+  require_cmd cargo
+  require_cmd rustc
+  require_cmd just
+  require_cmd rg
+  require_cmd fd
+  require_cmd tree
+
+  if command -v rustup >/dev/null 2>&1; then
+    if rustup component list --installed | rg -q "^rustfmt"; then
+      echo "ok: rustup component rustfmt"
+    else
+      echo "missing: rustup component rustfmt"
+      echo "  install: rustup component add rustfmt"
+      FAILED=1
+    fi
+
+    if rustup component list --installed | rg -q "^clippy"; then
+      echo "ok: rustup component clippy"
+    else
+      echo "missing: rustup component clippy"
+      echo "  install: rustup component add clippy"
+      FAILED=1
+    fi
+  else
+    echo "missing: rustup"
+    print_install_hint rustup
+    FAILED=1
+  fi
+
+  warn_if_missing cargo-watch
+  warn_if_missing cargo-nextest
+  check_xcode_clt
+  print_context_note
+}
+
+check_nix_host() {
+  echo "mode: nix-host"
+  require_cmd nix
+  check_xcode_clt
+}
+
+check_nix_shell() {
+  echo "mode: nix-shell"
+  require_cmd cargo
+  require_cmd rustc
+  require_cmd just
+  require_cmd rg
+  require_cmd fd
+  require_cmd tree
+  require_cmd cargo-watch
+  require_cmd cargo-nextest
+  check_xcode_clt
+  print_context_note
+}
+
+case "${MODE}" in
+  native) check_native ;;
+  nix-host) check_nix_host ;;
+  nix-shell) check_nix_shell ;;
+  *)
+    echo "error: unknown mode '${MODE}'"
+    echo "usage: $0 --mode <native|nix-host|nix-shell>"
+    exit 2
+    ;;
+esac
+
+if [[ "${FAILED}" -ne 0 ]]; then
+  echo "requirements check: FAILED"
+  exit 1
+fi
+
+echo "requirements check: OK"