package com.termux.shared.net.uri;

import android.net.Uri;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import com.termux.shared.data.DataUtils;
import com.termux.shared.file.FileUtils;

public class UriUtils {

    /**
     * Get the full file path from a {@link Uri} including the fragment.
     * <p>
     * If the {@link Uri} was created from file path with {@link Uri#parse(String)}, like "am"
     * command "-d" option does, and the path contained a "#", then anything after it would become
     * the fragment and {@link Uri#getPath()} will only return the path before it, which would be
     * invalid. The fragment must be manually appended to the path to get the full path.
     * <p>
     * If the {@link Uri} was created with {@link Uri.Builder} and path was set
     * with {@link Uri.Builder#path(String)}, then "#" will automatically be encoded to "%23"
     * and separate fragment will not exist.
     *
     * @param uri The {@link Uri} to get file path from.
     * @return Returns the file path if found, otherwise {@code null}.
     */
    @Nullable
    public static String getUriFilePathWithFragment(Uri uri) {
        if (uri == null) return null;
        String path = uri.getPath();
        if (DataUtils.isNullOrEmpty(path)) return null;
        String fragment = uri.getFragment();
        return path + (DataUtils.isNullOrEmpty(fragment) ? "" : "#" + fragment);
    }

    /**
     * Get the file basename from a {@link Uri}. The file basename is anything after last forward
     * slash "/" in the path, or the path itself if its not found.
     *
     * @param uri The {@link Uri} to get basename from.
     * @param withFragment If the {@link Uri} fragment should be included in basename.
     * @return Returns the file basename if found, otherwise {@code null}.
     */
    @Nullable
    public static String getUriFileBasename(Uri uri, boolean withFragment) {
        if (uri == null) return null;

        String path;
        if (withFragment) {
            path = getUriFilePathWithFragment(uri);
        } else {
            path = uri.getPath();
            if (DataUtils.isNullOrEmpty(path)) return null;
        }

        return FileUtils.getFileBasename(path);
    }

    /**
     * Get {@link UriScheme#SCHEME_FILE} {@link Uri} for path.
     *
     * @param path The path for the {@link Uri}.
     * @return Returns the {@link Uri}.
     */
    public static Uri getFileUri(@NonNull String path) {
        return new Uri.Builder().scheme(UriScheme.SCHEME_FILE).path(path).build();
    }

    /**
     * Get {@link UriScheme#SCHEME_CONTENT} {@link Uri} for path.
     *
     * @param authority The authority for the {@link Uri}.
     * @param path The path for the {@link Uri}.
     * @return Returns the {@link Uri}.
     */
    public static Uri getContentUri(@NonNull String authority, @NonNull String path) {
        return new Uri.Builder().scheme(UriScheme.SCHEME_CONTENT).authority(authority).path(path).build();
    }

}
