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<?php
    /**
     * IGit interface
     *
     * @author  Jan Pecha, <janpecha@email.cz>
     * @license New BSD License (BSD-3), see file license.md
     */

    namespace Cz\Git;

    interface IGit
    {
        /**
         * Creates a tag.
         * @param  string
         * @param  array|NULL
         * @throws Cz\Git\GitException
         */
        function createTag($name, $options = NULL);


        /**
         * Removes tag.
         * @param  string
         * @throws Cz\Git\GitException
         */
        function removeTag($name);


        /**
         * Renames tag.
         * @param  string
         * @param  string
         * @throws Cz\Git\GitException
         */
        function renameTag($oldName, $newName);


        /**
         * Returns list of tags in repo.
         * @return string[]|NULL  NULL => no tags
         */
        function getTags();


        /**
         * Merges branches.
         * @param  string
         * @param  array|NULL
         * @throws Cz\Git\GitException
         */
        function merge($branch, $options = NULL);


        /**
         * Creates new branch.
         * @param  string
         * @param  bool
         * @throws Cz\Git\GitException
         */
        function createBranch($name, $checkout = FALSE);


        /**
         * Removes branch.
         * @param  string
         * @throws Cz\Git\GitException
         */
        function removeBranch($name);


        /**
         * Gets name of current branch
         * @return string
         * @throws Cz\Git\GitException
         */
        function getCurrentBranchName();


        /**
         * Returns list of branches in repo.
         * @return string[]|NULL  NULL => no branches
         */
        function getBranches();


        /**
         * Returns list of local branches in repo.
         * @return string[]|NULL  NULL => no branches
         */
        function getLocalBranches();


        /**
         * Checkout branch.
         * @param  string
         * @throws Cz\Git\GitException
         */
        function checkout($name);


        /**
         * Removes file(s).
         * @param  string|string[]
         * @throws Cz\Git\GitException
         */
        function removeFile($file);


        /**
         * Adds file(s).
         * @param  string|string[]
         * @throws Cz\Git\GitException
         */
        function addFile($file);


        /**
         * Adds all created, modified & removed files.
         * @throws Cz\Git\GitException
         */
        function addAllChanges();


        /**
         * Renames file(s).
         * @param  string|string[]  from: array('from' => 'to', ...) || (from, to)
         * @param  string|NULL
         * @throws Cz\Git\GitException
         */
        function renameFile($file, $to = NULL);


        /**
         * Commits changes
         * @param  string
         * @param  string[]  param => value
         * @throws Cz\Git\GitException
         */
        function commit($message, $params = NULL);


        /**
         * Exists changes?
         * @return bool
         */
        function hasChanges();


        /**
         * Pull changes from a remote
         * @param  string|NULL
         * @param  array|NULL
         * @return self
         * @throws GitException
         */
        function pull($remote = NULL, array $params = NULL);


        /**
         * Push changes to a remote
         * @param  string|NULL
         * @param  array|NULL
         * @return self
         * @throws GitException
         */
        function push($remote = NULL, array $params = NULL);


        /**
         * Run fetch command to get latest branches
         * @param  string|NULL
         * @param  array|NULL
         * @return self
         * @throws GitException
         */
        function fetch($remote = NULL, array $params = NULL);

        /**
         * Adds new remote repository
         * @param  string
         * @param  string
         * @param  array|NULL
         * @return self
         */
        function addRemote($name, $url, array $params = NULL);


        /**
         * Renames remote repository
         * @param  string
         * @param  string
         * @return self
         */
        function renameRemote($oldName, $newName);


        /**
         * Removes remote repository
         * @param  string
         * @return self
         */
        function removeRemote($name);


        /**
         * Changes remote repository URL
         * @param  string
         * @param  string
         * @param  array|NULL
         * @return self
         */
        function setRemoteUrl($name, $url, array $params = NULL);


        /**
         * Init repo in directory
         * @param  string
         * @param  array|NULL
         * @return self
         * @throws GitException
         */
        static function init($directory, array $params = NULL);


        /**
         * Clones GIT repository from $url into $directory
         * @param  string
         * @param  string|NULL
         * @return self
         */
        static function cloneRepository($url, $directory = NULL);
    }


    class GitException extends \Exception
    {
    }