#!/bin/bash
# azerothcore-rm source repository setup
set -euo pipefail

echo '🔧 Setting up AzerothCore source repository...'

# Load environment variables if .env exists
if [ -f .env ]; then
    source .env
fi

# Remember project root for path normalization
PROJECT_ROOT="$(pwd)"

# Default values
MODULE_PLAYERBOTS="${MODULE_PLAYERBOTS:-0}"
PLAYERBOT_ENABLED="${PLAYERBOT_ENABLED:-0}"
STACK_SOURCE_VARIANT="${STACK_SOURCE_VARIANT:-}"
if [ -z "$STACK_SOURCE_VARIANT" ]; then
    if [ "$MODULE_PLAYERBOTS" = "1" ] || [ "$PLAYERBOT_ENABLED" = "1" ]; then
        STACK_SOURCE_VARIANT="playerbots"
    else
        STACK_SOURCE_VARIANT="core"
    fi
fi
LOCAL_STORAGE_ROOT="${STORAGE_PATH_LOCAL:-./local-storage}"
DEFAULT_STANDARD_PATH="${LOCAL_STORAGE_ROOT%/}/source/azerothcore"
DEFAULT_PLAYERBOTS_PATH="${LOCAL_STORAGE_ROOT%/}/source/azerothcore-playerbots"

SOURCE_PATH_DEFAULT="$DEFAULT_STANDARD_PATH"
if [ "$STACK_SOURCE_VARIANT" = "playerbots" ]; then
    SOURCE_PATH_DEFAULT="$DEFAULT_PLAYERBOTS_PATH"
fi
SOURCE_PATH="${MODULES_REBUILD_SOURCE_PATH:-$SOURCE_PATH_DEFAULT}"

show_client_data_requirement(){
    local repo_path="$1"
    local detector="$PROJECT_ROOT/scripts/bash/detect-client-data-version.sh"
    if [ ! -x "$detector" ]; then
        return
    fi

    local detection
    if ! detection="$("$detector" --no-header "$repo_path" 2>/dev/null | head -n1)"; then
        echo "⚠️  Could not detect client data version for $repo_path"
        return
    fi

    local detected_repo raw_version normalized_version
    IFS=$'\t' read -r detected_repo raw_version normalized_version <<< "$detection"
    if [ -z "$normalized_version" ] || [ "$normalized_version" = "<unknown>" ]; then
        echo "⚠️  Could not detect client data version for $repo_path"
        return
    fi

    local env_value="${CLIENT_DATA_VERSION:-}"
    if [ -n "$env_value" ] && [ "$env_value" != "$normalized_version" ]; then
        echo "⚠️  Source requires client data ${normalized_version} (raw ${raw_version}) but .env specifies ${env_value}. Update CLIENT_DATA_VERSION to avoid mismatched maps."
    elif [ -n "$env_value" ]; then
        echo "📦 Client data requirement satisfied: ${normalized_version} (raw ${raw_version})"
    else
        echo "ℹ️  Detected client data requirement: ${normalized_version} (raw ${raw_version}). Set CLIENT_DATA_VERSION in .env to avoid mismatches."
    fi
}

STORAGE_PATH_VALUE="${STORAGE_PATH:-./storage}"
if [[ "$STORAGE_PATH_VALUE" != /* ]]; then
    STORAGE_PATH_ABS="$PROJECT_ROOT/${STORAGE_PATH_VALUE#./}"
else
    STORAGE_PATH_ABS="$STORAGE_PATH_VALUE"
fi

if [[ "$SOURCE_PATH_DEFAULT" != /* ]]; then
    DEFAULT_SOURCE_ABS="$PROJECT_ROOT/${SOURCE_PATH_DEFAULT#./}"
else
    DEFAULT_SOURCE_ABS="$SOURCE_PATH_DEFAULT"
fi

# Convert to absolute path if relative and ensure we stay local
if [[ "$SOURCE_PATH" != /* ]]; then
    SOURCE_PATH="$PROJECT_ROOT/${SOURCE_PATH#./}"
fi
if [[ "$SOURCE_PATH" == "$STORAGE_PATH_ABS"* ]]; then
    echo "⚠️  Source path $SOURCE_PATH is inside shared storage ($STORAGE_PATH_ABS). Using local workspace $DEFAULT_SOURCE_ABS instead."
    SOURCE_PATH="$DEFAULT_SOURCE_ABS"
    MODULES_REBUILD_SOURCE_PATH="$SOURCE_PATH_DEFAULT"
fi

ACORE_REPO_STANDARD="${ACORE_REPO_STANDARD:-https://github.com/azerothcore/azerothcore-wotlk.git}"
ACORE_BRANCH_STANDARD="${ACORE_BRANCH_STANDARD:-master}"
ACORE_REPO_PLAYERBOTS="${ACORE_REPO_PLAYERBOTS:-https://github.com/mod-playerbots/azerothcore-wotlk.git}"
ACORE_BRANCH_PLAYERBOTS="${ACORE_BRANCH_PLAYERBOTS:-Playerbot}"

# Repository and branch selection based on source variant
if [ "$STACK_SOURCE_VARIANT" = "playerbots" ]; then
    REPO_URL="$ACORE_REPO_PLAYERBOTS"
    BRANCH="$ACORE_BRANCH_PLAYERBOTS"
    echo "📌 Playerbots mode: Using $REPO_URL, branch $BRANCH"
else
    REPO_URL="$ACORE_REPO_STANDARD"
    BRANCH="$ACORE_BRANCH_STANDARD"
    echo "📌 Standard mode: Using $REPO_URL, branch $BRANCH"
fi

echo "📍 Repository: $REPO_URL"
echo "🌿 Branch: $BRANCH"
echo "📂 Source path: $SOURCE_PATH"

# Ensure destination directories exist
echo "📂 Preparing local workspace at $(dirname "$SOURCE_PATH")"
mkdir -p "$(dirname "$SOURCE_PATH")"

# Clone or update repository
if [ -d "$SOURCE_PATH/.git" ]; then
  echo "📂 Existing repository found, updating..."
  cd "$SOURCE_PATH"

  # Check if we're on the correct repository
  CURRENT_REMOTE=$(git remote get-url origin 2>/dev/null || echo "")
  if [ "$CURRENT_REMOTE" != "$REPO_URL" ]; then
    echo "🔄 Repository URL changed, re-cloning..."
    cd ..
    rm -rf "$(basename "$SOURCE_PATH")"
    echo "⏳ Cloning $REPO_URL (branch $BRANCH) into $(basename "$SOURCE_PATH")"
    git clone -b "$BRANCH" "$REPO_URL" "$(basename "$SOURCE_PATH")"
    cd "$(basename "$SOURCE_PATH")"
  else
    echo "🔄 Fetching latest changes from origin..."
    git fetch origin --progress
    echo "🔀 Switching to branch $BRANCH..."
    git checkout "$BRANCH"
    echo "⬇️  Pulling latest commits..."
    git pull --ff-only origin "$BRANCH"
    echo "✅ Repository updated to latest $BRANCH"
  fi
else
  echo "📥 Cloning repository..."
  echo "⏳ Cloning $REPO_URL (branch $BRANCH) into $SOURCE_PATH"
  git clone -b "$BRANCH" "$REPO_URL" "$SOURCE_PATH"
  echo "✅ Repository cloned successfully"
fi

cd "$SOURCE_PATH"

# Display current status
CURRENT_COMMIT=$(git rev-parse --short HEAD)
CURRENT_BRANCH=$(git branch --show-current)
echo "📊 Current status:"
echo "   Branch: $CURRENT_BRANCH"
echo "   Commit: $CURRENT_COMMIT"
echo "   Last commit: $(git log -1 --pretty=format:'%s (%an, %ar)')"
show_client_data_requirement "$SOURCE_PATH"

echo '🎉 Source repository setup complete!'