#!/usr/bin/env bash
# Shared constants and helpers for all run scripts

# Ensure cargo is in PATH (rustup installs to ~/.cargo/bin)
[[ -f "$HOME/.cargo/env" ]] && source "$HOME/.cargo/env"

# ── Dotenv loader (Next.js/Vite precedence) ─────────────────────────
# Source order (later wins, so secrets override base):
#   1. .env                       (tracked, base)
#   2. .env.local                 (gitignored, user overrides)
#   3. .env.<mode>                (tracked, mode defaults — development/production)
#   4. .env.<mode>.local          (gitignored, mode+user)
# Mode is $NODE_ENV, else "development".
#
# Variables already set in the shell ALWAYS win (never clobber). Lines
# are plain `KEY=VALUE`; inline comments (`#`) are stripped; surrounding
# single/double quotes on values are stripped.
_load_envfile() {
    local f="$1"
    [[ -r "$f" ]] || return 0
    local line key val
    while IFS= read -r line || [[ -n "$line" ]]; do
        # Strip leading whitespace + skip comments + blanks
        line="${line#"${line%%[![:space:]]*}"}"
        [[ -z "$line" || "$line" == \#* ]] && continue
        # Split once on =, tolerate `export KEY=VAL`
        line="${line#export }"
        [[ "$line" != *=* ]] && continue
        key="${line%%=*}"
        val="${line#*=}"
        # Strip surrounding quotes
        [[ "$val" == \"*\" && "$val" == *\" ]] && val="${val:1:${#val}-2}"
        [[ "$val" == \'*\' && "$val" == *\' ]] && val="${val:1:${#val}-2}"
        # Don't clobber vars already set in the shell
        [[ -z "${!key+x}" ]] && export "$key=$val"
    done < "$f"
}

_load_env_cascade() {
    local mode="${NODE_ENV:-development}"
    _load_envfile "$REPO_ROOT/.env"
    _load_envfile "$REPO_ROOT/.env.local"
    _load_envfile "$REPO_ROOT/.env.${mode}"
    _load_envfile "$REPO_ROOT/.env.${mode}.local"
}

# Require one or more env vars; fail the current command with a helpful
# message when any are missing. Usage: `require_env FORGEJO_HOST FORGEJO_RUNNER_TOKEN`.
require_env() {
    local missing=()
    for v in "$@"; do
        [[ -z "${!v:-}" ]] && missing+=("$v")
    done
    if (( ${#missing[@]} > 0 )); then
        echo -e "${RED}Missing required env:${NC} ${missing[*]}" >&2
        echo -e "${DIM}  Set in .env.local (gitignored) — see .env.example for documented keys.${NC}" >&2
        return 2
    fi
    return 0
}

# Run cascade at source time so every subcommand has vars available.
_load_env_cascade

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
DIM='\033[2m'
NC='\033[0m'

case "$(uname -s)" in
    Darwin) GODOT_BIN="godot" ;;
    *)      GODOT_BIN="flatpak run --user org.godotengine.Godot" ;;
esac
GAME_DIR="$REPO_ROOT/src/game"
SIMULATOR_DIR="$REPO_ROOT/src/simulator"
GUIDE_DIR="$REPO_ROOT/public/games/age-of-dwarves/guide"

# ── Optional-tool detection helper ──────────────────────────────────
# Used across lint.sh / test.sh / verify.sh. Returns 0 if available,
# 1 + yellow warning if not.
_have_tool() {
    local tool="$1"
    local hint="${2:-}"
    if command -v "$tool" >/dev/null 2>&1; then
        return 0
    fi
    if [ -n "$hint" ]; then
        echo -e "${YELLOW}SKIP: '$tool' not installed — install with: $hint${NC}"
    else
        echo -e "${YELLOW}SKIP: '$tool' not installed${NC}"
    fi
    return 1
}