/*
**
** Copyright 2012, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
**     http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/

package com.android.commands.requestsync;

import android.accounts.Account;
import android.content.ContentResolver;
import android.os.Bundle;

import java.net.URISyntaxException;

public class RequestSync {
    // agr parsing fields
    private String[] mArgs;
    private int mNextArg;
    private String mCurArgData;

    // account & authority
    private String mAccountName = null;
    private String mAccountType = null;
    private String mAuthority = null;

    // extras
    private Bundle mExtras = new Bundle();

    /**
     * Command-line entry point.
     *
     * @param args The command-line arguments
     */
    public static void main(String[] args) {
        try {
            (new RequestSync()).run(args);
        } catch (IllegalArgumentException e) {
            showUsage();
            System.err.println("Error: " + e);
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace(System.err);
            System.exit(1);
        }
    }

    private void run(String[] args) throws Exception {
        mArgs = args;
        mNextArg = 0;

        final boolean ok = parseArgs();
        if (ok) {
            final Account account = mAccountName != null && mAccountType != null
                    ? new Account(mAccountName, mAccountType) : null;

            System.out.printf("Requesting sync for: \n");
            if (account != null) {
                System.out.printf("  Account: %s (%s)\n", account.name, account.type);
            } else {
                System.out.printf("  Account: all\n");
            }

            System.out.printf("  Authority: %s\n", mAuthority != null ? mAuthority : "All");

            if (mExtras.size() > 0) {
                System.out.printf("  Extras:\n");
                for (String key : mExtras.keySet()) {
                    System.out.printf("    %s: %s\n", key, mExtras.get(key));
                }
            }

            ContentResolver.requestSync(account, mAuthority, mExtras);
        }
    }

    private boolean parseArgs() throws URISyntaxException {
        String opt;
        while ((opt=nextOption()) != null) {
            if (opt.equals("-h") || opt.equals("--help")) {
                showUsage();
                return false;
            } else if (opt.equals("-n") || opt.equals("--account-name")) {
                mAccountName = nextArgRequired();
            } else if (opt.equals("-t") || opt.equals("--account-type")) {
                mAccountType = nextArgRequired();
            } else if (opt.equals("-a") || opt.equals("--authority")) {
                mAuthority = nextArgRequired();
            } else if (opt.equals("--is") || opt.equals("--ignore-settings")) {
                mExtras.putBoolean(ContentResolver.SYNC_EXTRAS_IGNORE_SETTINGS, true);
            } else if (opt.equals("--ib") || opt.equals("--ignore-backoff")) {
                mExtras.putBoolean(ContentResolver.SYNC_EXTRAS_IGNORE_BACKOFF, true);
            } else if (opt.equals("--dd") || opt.equals("--discard-deletions")) {
                mExtras.putBoolean(ContentResolver.SYNC_EXTRAS_DISCARD_LOCAL_DELETIONS, true);
            } else if (opt.equals("--nr") || opt.equals("--no-retry")) {
                mExtras.putBoolean(ContentResolver.SYNC_EXTRAS_DO_NOT_RETRY, true);
            } else if (opt.equals("--ex") || opt.equals("--expedited")) {
                mExtras.putBoolean(ContentResolver.SYNC_EXTRAS_EXPEDITED, true);
            } else if (opt.equals("-i") || opt.equals("--initialize")) {
                mExtras.putBoolean(ContentResolver.SYNC_EXTRAS_INITIALIZE, true);
            } else if (opt.equals("-m") || opt.equals("--manual")) {
                mExtras.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
            } else if (opt.equals("--od") || opt.equals("--override-deletions")) {
                mExtras.putBoolean(ContentResolver.SYNC_EXTRAS_OVERRIDE_TOO_MANY_DELETIONS, true);
            } else if (opt.equals("-u") || opt.equals("--upload-only")) {
                mExtras.putBoolean(ContentResolver.SYNC_EXTRAS_UPLOAD, true);
            } else if (opt.equals("-e") || opt.equals("--es") || opt.equals("--extra-string")) {
                final String key = nextArgRequired();
                final String value = nextArgRequired();
                mExtras.putString(key, value);
            } else if (opt.equals("--esn") || opt.equals("--extra-string-null")) {
                final String key = nextArgRequired();
                mExtras.putString(key, null);
            } else if (opt.equals("--ei") || opt.equals("--extra-int")) {
                final String key = nextArgRequired();
                final String value = nextArgRequired();
                mExtras.putInt(key, Integer.valueOf(value));
            } else if (opt.equals("--el") || opt.equals("--extra-long")) {
                final String key = nextArgRequired();
                final String value = nextArgRequired();
                mExtras.putLong(key, Long.parseLong(value));
            } else if (opt.equals("--ef") || opt.equals("--extra-float")) {
                final String key = nextArgRequired();
                final String value = nextArgRequired();
                mExtras.putFloat(key, Long.parseLong(value));
            } else if (opt.equals("--ed") || opt.equals("--extra-double")) {
                final String key = nextArgRequired();
                final String value = nextArgRequired();
                mExtras.putFloat(key, Long.parseLong(value));
            } else if (opt.equals("--ez") || opt.equals("--extra-bool")) {
                final String key = nextArgRequired();
                final String value = nextArgRequired();
                mExtras.putBoolean(key, Boolean.valueOf(value));
            } else {
                System.err.println("Error: Unknown option: " + opt);
                showUsage();
                return false;
            }
        }

        if (mNextArg < mArgs.length) {
            showUsage();
            return false;
        }
        return true;
    }

    private String nextOption() {
        if (mCurArgData != null) {
            String prev = mArgs[mNextArg - 1];
            throw new IllegalArgumentException("No argument expected after \"" + prev + "\"");
        }
        if (mNextArg >= mArgs.length) {
            return null;
        }
        String arg = mArgs[mNextArg];
        if (!arg.startsWith("-")) {
            return null;
        }
        mNextArg++;
        if (arg.equals("--")) {
            return null;
        }
        if (arg.length() > 1 && arg.charAt(1) != '-') {
            if (arg.length() > 2) {
                mCurArgData = arg.substring(2);
                return arg.substring(0, 2);
            } else {
                mCurArgData = null;
                return arg;
            }
        }
        mCurArgData = null;
        return arg;
    }

    private String nextArg() {
        if (mCurArgData != null) {
            String arg = mCurArgData;
            mCurArgData = null;
            return arg;
        } else if (mNextArg < mArgs.length) {
            return mArgs[mNextArg++];
        } else {
            return null;
        }
    }

    private String nextArgRequired() {
        String arg = nextArg();
        if (arg == null) {
            String prev = mArgs[mNextArg - 1];
            throw new IllegalArgumentException("Argument expected after \"" + prev + "\"");
        }
        return arg;
    }

    private static void showUsage() {
        System.err.println(
                "usage: requestsync [options]\n" +
                "With no options, a sync will be requested for all account and all sync\n" +
                "authorities with no extras. Options can be:\n" +
                "    -h|--help: Display this message\n" +
                "    -n|--account-name <ACCOUNT-NAME>\n" +
                "    -t|--account-type <ACCOUNT-TYPE>\n" +
                "    -a|--authority <AUTHORITY>\n" +
                "  Add ContentResolver extras:\n" +
                "    --is|--ignore-settings: Add SYNC_EXTRAS_IGNORE_SETTINGS\n" +
                "    --ib|--ignore-backoff: Add SYNC_EXTRAS_IGNORE_BACKOFF\n" +
                "    --dd|--discard-deletions: Add SYNC_EXTRAS_DISCARD_LOCAL_DELETIONS\n" +
                "    --nr|--no-retry: Add SYNC_EXTRAS_DO_NOT_RETRY\n" +
                "    --ex|--expedited: Add SYNC_EXTRAS_EXPEDITED\n" +
                "    --i|--initialize: Add SYNC_EXTRAS_INITIALIZE\n" +
                "    --m|--manual: Add SYNC_EXTRAS_MANUAL\n" +
                "    --od|--override-deletions: Add SYNC_EXTRAS_OVERRIDE_TOO_MANY_DELETIONS\n" +
                "    --u|--upload-only: Add SYNC_EXTRAS_UPLOAD\n" +
                "  Add custom extras:\n" +
                "    -e|--es|--extra-string <KEY> <VALUE>\n" +
                "    --esn|--extra-string-null <KEY>\n" +
                "    --ei|--extra-int <KEY> <VALUE>\n" +
                "    --el|--extra-long <KEY> <VALUE>\n" +
                "    --ef|--extra-float <KEY> <VALUE>\n" +
                "    --ed|--extra-double <KEY> <VALUE>\n" +
                "    --ez|--extra-bool <KEY> <VALUE>\n"
                );
    }
}