#!/usr/bin/env bash
set -euo pipefail

SOURCE_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
DATASET_ROOT="${DATASET_ROOT:-$(dirname "$SOURCE_ROOT")/osu_model_dataset}"

IS_WSL=0
if [ -r /proc/version ] && grep -qiE 'microsoft|wsl' /proc/version; then
  IS_WSL=1
fi

if [ -z "${PYTHON:-}" ]; then
  if [ -x "$SOURCE_ROOT/.venv/bin/python" ]; then
    PYTHON="$SOURCE_ROOT/.venv/bin/python"
  elif [ "$IS_WSL" = "0" ] && [ -x "$SOURCE_ROOT/.venv/Scripts/python.exe" ]; then
    PYTHON="$SOURCE_ROOT/.venv/Scripts/python.exe"
  elif command -v python3 >/dev/null 2>&1; then
    PYTHON="$(command -v python3)"
  else
    PYTHON="python"
  fi
fi

if [ -z "${HF:-}" ]; then
  if command -v hf >/dev/null 2>&1; then
    HF="$(command -v hf)"
  elif [ -x /root/.hf-cli/venv/bin/hf ]; then
    HF="/root/.hf-cli/venv/bin/hf"
  else
    HF="hf"
  fi
fi

if [ -z "${INDEXER:-}" ]; then
  if [ -x "$SOURCE_ROOT/target/release/osu_indexer" ]; then
    INDEXER="$SOURCE_ROOT/target/release/osu_indexer"
  elif [ "$IS_WSL" = "0" ] && [ -x "$SOURCE_ROOT/target/release/osu_indexer.exe" ]; then
    INDEXER="$SOURCE_ROOT/target/release/osu_indexer.exe"
  else
    INDEXER="$SOURCE_ROOT/target/release/osu_indexer"
  fi
fi

if [ -z "${FETCHER:-}" ]; then
  if [ -x "$SOURCE_ROOT/target/release/osu_fetcher" ]; then
    FETCHER="$SOURCE_ROOT/target/release/osu_fetcher"
  elif [ "$IS_WSL" = "0" ] && [ -x "$SOURCE_ROOT/target/release/osu_fetcher.exe" ]; then
    FETCHER="$SOURCE_ROOT/target/release/osu_fetcher.exe"
  else
    FETCHER="$SOURCE_ROOT/target/release/osu_fetcher"
  fi
fi

PY_SOURCE_ROOT="$SOURCE_ROOT"
PY_DATASET_ROOT="$DATASET_ROOT"
PY_INDEXER="$INDEXER"

if command -v wslpath >/dev/null 2>&1 && [[ "$PYTHON" == *.exe ]]; then
  PY_SOURCE_ROOT="$(wslpath -w "$SOURCE_ROOT")"
  PY_DATASET_ROOT="$(wslpath -w "$DATASET_ROOT")"
  if [[ "$INDEXER" == *.exe ]]; then
    PY_INDEXER="$(wslpath -w "$INDEXER")"
  fi
fi

prepare_dataset_root() {
  mkdir -p "$DATASET_ROOT"
  cd "$DATASET_ROOT"
}