#!/bin/bash

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
cd "$SCRIPT_DIR"

if [ ! -f "package.json" ]; then
    echo "package.json not found in $SCRIPT_DIR"
    exit 1
fi

PKG_MANAGER="bun"
MODE="dev"

next_is_value=0
last_key=""

for arg in "$@"; do
    if [ "$next_is_value" == "1" ]; then
        if [ "$last_key" == "manager" ]; then
            PKG_MANAGER="$arg"
        fi
        if [ "$last_key" == "mode" ]; then
            MODE="$arg"
        fi
        next_is_value=0
    fi

    if [ "$arg" == "clean" ] || [ "$arg" == "cleanup" ]; then
        goto_cleanup=1
    fi

    if [ "$arg" == "manager" ]; then
        last_key="manager"
        next_is_value=1
    fi

    if [ "$arg" == "mode" ]; then
        last_key="mode"
        next_is_value=1
    fi
done

ALLOWED_MANAGERS=("bun" "npm" "yarn" "pnpm")
ALLOWED_MODES=("dev" "prod" "development" "production")

manager_allowed=0
for allowed_manager in "${ALLOWED_MANAGERS[@]}"; do
    if [ "$PKG_MANAGER" == "$allowed_manager" ]; then
        manager_allowed=1
    fi
done

mode_allowed=0
for allowed_mode in "${ALLOWED_MODES[@]}"; do
    if [ "$MODE" == "$allowed_mode" ]; then
        mode_allowed=1
    fi
done

if [ "$manager_allowed" == "0" ]; then
    echo "$PKG_MANAGER is not a valid package manager, please use one of the following: ${ALLOWED_MANAGERS[@]}"
    exit 1
fi

if [ "$mode_allowed" == "0" ]; then
    echo "$MODE is not a valid mode, please use one of the following: ${ALLOWED_MODES[@]}"
    exit 1
fi

echo "Using package manager: $PKG_MANAGER"
echo "Mode: $MODE"

NPM_MARKER="node_modules/.npm_used"
YARN_MARKER="node_modules/.yarn_used"
PNPM_MARKER="node_modules/.pnpm_used"
BUN_MARKER="node_modules/.bun_used"

if [ "$PKG_MANAGER" != "bun" ]; then
    if ! command -v nodemon >/dev/null 2>&1; then
        echo "nodemon not found, installing..."
        case "$PKG_MANAGER" in
            npm)
                npm install -g nodemon
                ;;
            yarn)
                yarn global add nodemon
                ;;
            pnpm)
                pnpm add -g nodemon
                ;;
            *)
                echo "Unsupported package manager: $PKG_MANAGER"
                exit 1
                ;;
        esac
    fi
fi

if [ "$PKG_MANAGER" == "npm" ]; then
    INSTALL_CMD="npm install"
    if [ "$MODE" == "dev" ] || [ "$MODE" == "development" ]; then
        RUN_CMD="nodemon --watch src --exec npm exec tsx src/index.ts"
    else
        RUN_CMD="npm exec tsx src/index.ts"
    fi
    CURRENT_MARKER="$NPM_MARKER"
elif [ "$PKG_MANAGER" == "yarn" ]; then
    INSTALL_CMD="yarn install"
    if [ "$MODE" == "dev" ] || [ "$MODE" == "development" ]; then
        RUN_CMD="nodemon --watch src --exec yarn exec tsx src/index.ts"
    else
        RUN_CMD="yarn exec tsx src/index.ts"
    fi
    CURRENT_MARKER="$YARN_MARKER"
elif [ "$PKG_MANAGER" == "pnpm" ]; then
    INSTALL_CMD="pnpm install"
    if [ "$MODE" == "dev" ] || [ "$MODE" == "development" ]; then
        RUN_CMD="nodemon --watch src --exec pnpm exec tsx src/index.ts"
    else
        RUN_CMD="pnpm exec tsx src/index.ts"
    fi
    CURRENT_MARKER="$PNPM_MARKER"
elif [ "$PKG_MANAGER" == "bun" ]; then
    INSTALL_CMD="bun install"
    if [ "$MODE" == "dev" ] || [ "$MODE" == "development" ]; then
        RUN_CMD="bun run --watch src/index.ts --development"
    else
        RUN_CMD="bun run src/index.ts"
    fi
    CURRENT_MARKER="$BUN_MARKER"
fi


if [ -f "$NPM_MARKER" ] && [ "$CURRENT_MARKER" != "$NPM_MARKER" ]; then goto_cleanup=1; fi
if [ -f "$YARN_MARKER" ] && [ "$CURRENT_MARKER" != "$YARN_MARKER" ]; then goto_cleanup=1; fi
if [ -f "$PNPM_MARKER" ] && [ "$CURRENT_MARKER" != "$PNPM_MARKER" ]; then goto_cleanup=1; fi
if [ -f "$BUN_MARKER" ] && [ "$CURRENT_MARKER" != "$BUN_MARKER" ]; then goto_cleanup=1; fi

if [ "$goto_cleanup" == "1" ]; then
    files_to_delete=("package-lock.json" "yarn.lock" "pnpm-lock.yaml" "bun.lockb")
    folders_to_delete=("node_modules" "dist" "logs")
    markers_to_delete=("$NPM_MARKER" "$YARN_MARKER" "$PNPM_MARKER" "$BUN_MARKER")

    echo "Cleaning up files and folders..."

    for file in "${files_to_delete[@]}"; do
        if [ -f "$file" ]; then
            echo "Found $file in $SCRIPT_DIR - deleting..."
            rm -f "$file"
        fi
    done

    for folder in "${folders_to_delete[@]}"; do
        if [ -d "$folder" ]; then
            echo "Found $folder in $SCRIPT_DIR - deleting..."
            rm -rf "$folder"
        fi
    done

    for marker in "${markers_to_delete[@]}"; do
        if [ -f "$marker" ]; then
            rm -f "$marker"
        fi
    done

    exit 0
fi

if [ -n "$RUN_CMD" ]; then
    echo "Running $RUN_CMD..."
    $INSTALL_CMD
    $RUN_CMD
else
    echo "No run command set, exiting..."
fi

exit 0