#!/bin/bash
# Module-specific hook for mod-ale compatibility patches
# NOTE: These patches are primarily needed for the AzerothCore playerbots fork
set -e

# Hook environment
MODULE_KEY="${MODULE_KEY:-}"
MODULE_DIR="${MODULE_DIR:-}"
MODULE_NAME="${MODULE_NAME:-}"

# Detect if we're building with playerbots fork
IS_PLAYERBOTS_FORK=0
if [ -n "$MODULE_DIR" ]; then
    # Check if the parent directory structure indicates playerbots fork
    if echo "$MODULE_DIR" | grep -q "azerothcore-playerbots"; then
        IS_PLAYERBOTS_FORK=1
    fi
fi

# Feature flags (set to 0 to disable specific patches)
APPLY_MOVEPATH_PATCH="${APPLY_MOVEPATH_PATCH:-0}"  # Disabled by default - appears unnecessary
# SendTrainerList patch: auto-detect based on fork, but can be overridden
if [ -z "${APPLY_SENDTRAINERLIST_PATCH:-}" ]; then
    APPLY_SENDTRAINERLIST_PATCH="$IS_PLAYERBOTS_FORK"  # Only needed for playerbots fork
else
    APPLY_SENDTRAINERLIST_PATCH="${APPLY_SENDTRAINERLIST_PATCH}"
fi

if [ -z "$MODULE_DIR" ] || [ ! -d "$MODULE_DIR" ]; then
    echo "❌ mod-ale-patches: Invalid module directory: $MODULE_DIR"
    exit 2
fi

if [ "$IS_PLAYERBOTS_FORK" = "1" ]; then
    echo "🔧 mod-ale-patches: Applying playerbots fork compatibility fixes to $MODULE_NAME"
else
    echo "🔧 mod-ale-patches: Checking compatibility fixes for $MODULE_NAME"
fi

# Apply MovePath compatibility patch
apply_movepath_patch() {
    local target_file="$MODULE_DIR/src/LuaEngine/methods/CreatureMethods.h"

    if [ ! -f "$target_file" ]; then
        echo "   ⚠️  MovePath patch target file missing: $target_file"
        return 1
    fi

    if grep -q 'MoveWaypoint(creature->GetWaypointPath(), true);' "$target_file"; then
        if sed -i 's/MoveWaypoint(creature->GetWaypointPath(), true);/MovePath(creature->GetWaypointPath(), FORCED_MOVEMENT_RUN);/' "$target_file"; then
            echo "   ✅ Applied MovePath compatibility fix"
            return 0
        else
            echo "   ❌ Failed to apply MovePath compatibility fix"
            return 2
        fi
    else
        echo "   ✅ MovePath compatibility fix already present"
        return 0
    fi
}

# Apply SendTrainerList compatibility patch
apply_sendtrainerlist_patch() {
    local target_file="$MODULE_DIR/src/LuaEngine/methods/PlayerMethods.h"

    if [ ! -f "$target_file" ]; then
        echo "   ⚠️  SendTrainerList patch target file missing: $target_file"
        return 1
    fi

    # Check if the buggy code exists (without GET_GUID())
    if grep -q 'player->GetSession()->SendTrainerList(obj);' "$target_file"; then
        # Apply the fix by adding ->GET_GUID()
        if sed -i 's/player->GetSession()->SendTrainerList(obj);/player->GetSession()->SendTrainerList(obj->GET_GUID());/' "$target_file"; then
            echo "   ✅ Applied SendTrainerList compatibility fix"
            return 0
        else
            echo "   ❌ Failed to apply SendTrainerList compatibility fix"
            return 2
        fi
    else
        echo "   ✅ SendTrainerList compatibility fix already present"
        return 0
    fi
}

# Apply all patches
patch_count=0
if [ "$APPLY_MOVEPATH_PATCH" = "1" ]; then
    if apply_movepath_patch; then
        patch_count=$((patch_count + 1))
    fi
fi
if [ "$APPLY_SENDTRAINERLIST_PATCH" = "1" ]; then
    if apply_sendtrainerlist_patch; then
        patch_count=$((patch_count + 1))
    fi
fi

if [ $patch_count -eq 0 ]; then
    echo "   ℹ️  No patches needed or applied"
    exit 0
fi

echo "   ✅ Applied $patch_count compatibility patch(es)"
exit 0