#!/usr/bin/env bash
# auth.sh — pi credential checkpoint (M19): per-provider auth report and
# named-account listing. Never prints credential material: provider names,
# credential types, permission bits, and env var NAMES only.
#
# Usage:
#   scripts/auth.sh status     per-provider report (auth.json + env-side names)
#   scripts/auth.sh accounts   list named account files (auth.<account>.json)
#
# The credential file is the compose read-only mount source (PI_AUTH_FILE,
# default ~/.pi/agent/auth.json). Resolution follows pi: auth.json entries
# take priority over environment variables.
#
# Exit codes: 0 report produced · 2 credential file unparseable ·
# 3 file/dir missing for a read · 4 file/environment problem.
set -uo pipefail
cd "$(dirname "$0")/.."

AUTH_FILE="${PI_AUTH_FILE:-$HOME/.pi/agent/auth.json}"
AUTH_DIR="$(dirname "$AUTH_FILE")"
OP="${1:-}"

case "$OP" in
    status)
        if [ ! -e "$AUTH_FILE" ]; then
            echo "auth: credential file not found: $AUTH_FILE" >&2
            exit 3
        fi
        if [ ! -f "$AUTH_FILE" ] || [ -L "$AUTH_FILE" ]; then
            echo "auth: credential file must be a regular, non-symbolic-link file: $AUTH_FILE" >&2
            exit 4
        fi
        if ! node -e '
const fs = require("fs");
const file = process.argv[1];
let doc;
try { doc = JSON.parse(fs.readFileSync(file, "utf8")); }
catch (e) { console.error("auth: credential file is not valid JSON: " + e.message); process.exit(2); }
if (typeof doc !== "object" || doc === null || Array.isArray(doc)) {
  console.error("auth: credential file must be a JSON object keyed by provider"); process.exit(2);
}
const st = fs.statSync(file);
console.log("auth file: " + file + " (perms " + String(st.mode & 0o777).toString(8).padStart(3, "0") + ")");
const keys = Object.keys(doc).sort();
if (keys.length === 0) console.log("providers: (none in file)");
for (const k of keys) {
  const e = doc[k];
  let type = "unknown";
  if (typeof e === "object" && e !== null && typeof e.type === "string" && /^[a-z0-9_-]+$/i.test(e.type)) type = e.type;
  console.log("  " + k + "  type=" + type + "  source=auth.json");
}
console.log("resolution: auth.json entries take priority over environment (pi order: --api-key > auth.json > env > models.json)");
' "$AUTH_FILE"; then
            exit 2
        fi
        ENV_NAMES="$(env | grep -oE '^[A-Z0-9_]+_API_KEY' | sort -u | paste -sd, -)"
        if [ -n "$ENV_NAMES" ]; then
            echo "env-side credential-like names set (informational; file entries take priority): $ENV_NAMES"
        else
            echo "env-side credential-like names set: (none)"
        fi
        ;;
    accounts)
        if [ ! -d "$AUTH_DIR" ]; then
            echo "auth: directory not found: $AUTH_DIR" >&2
            exit 3
        fi
        shopt -s nullglob
        FILES=("$AUTH_DIR"/auth.*.json)
        shopt -u nullglob
        if [ "${#FILES[@]}" -eq 0 ]; then
            echo "accounts: (none) — named accounts are auth.<account>.json beside the credential file"
            exit 0
        fi
        echo "named accounts in $AUTH_DIR:"
        for f in "${FILES[@]}"; do
            name="$(basename "$f" .json)"
            name="${name#auth.}"
            marker=""
            [ "$f" = "$AUTH_FILE" ] && marker="  <- active (PI_AUTH_FILE)"
            echo "  $name$marker"
        done
        ;;
    *)
        echo "usage: scripts/auth.sh status | accounts" >&2
        exit 4
        ;;
esac