/*
 * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

struct got_repository;
struct got_pathlist_head;
struct got_tag_object;

/* Open and close repositories. */
const struct got_error *got_repo_open(struct got_repository**, const char *,
    const char *);
const struct got_error *got_repo_close(struct got_repository*);

/* Obtain the on-disk path to the repository. */
const char *got_repo_get_path(struct got_repository *);

/*
 * Obtain the path to a non-bare repository's .git directory.
 * For bare repositories, this returns the same result as got_repo_get_path().
 */
const char *got_repo_get_path_git_dir(struct got_repository *);

/* Obtain the commit author name if parsed from gitconfig, else NULL. */
const char *got_repo_get_gitconfig_author_name(struct got_repository *);

/* Obtain the commit author email if parsed from gitconfig, else NULL. */
const char *got_repo_get_gitconfig_author_email(struct got_repository *);

/* Obtain global commit author name parsed ~/.gitconfig, else NULL. */
const char *got_repo_get_global_gitconfig_author_name(struct got_repository *);

/* Obtain global commit author email parsed ~/.gitconfig, else NULL. */
const char *got_repo_get_global_gitconfig_author_email(struct got_repository *);

/* Information about one remote repository. */
struct got_remote_repo {
	char *name;
	char *url;
};

/* Obtain the list of remote repositories parsed from gitconfig. */ 
void got_repo_get_gitconfig_remotes(int *, struct got_remote_repo **,
    struct got_repository *);

/*
 * Obtain paths to various directories within a repository.
 * The caller must dispose of a path with free(3).
 */
char *got_repo_get_path_objects(struct got_repository *);
char *got_repo_get_path_objects_pack(struct got_repository *);
char *got_repo_get_path_refs(struct got_repository *);
char *got_repo_get_path_packed_refs(struct got_repository *);

struct got_reference;

/*
 * Obtain a reference, by name, from a repository.
 * The caller must dispose of it with got_ref_close().
 */
const struct got_error *got_repo_get_reference(struct got_reference **,
    struct got_repository *, const char *);


/* Indicate whether this is a bare repositiry (contains no git working tree). */
int got_repo_is_bare(struct got_repository *);

/* Attempt to map an arbitrary path to a path within the repository. */
const struct got_error *got_repo_map_path(char **, struct got_repository *,
    const char *, int);

/* Create a new repository in an empty directory at a specified path. */
const struct got_error *got_repo_init(const char *);

/* Attempt to find a unique object ID for a given ID string prefix. */
const struct got_error *got_repo_match_object_id_prefix(struct got_object_id **,
    const char *, int, struct got_repository *);

/*
 * Given an object ID string or reference name, attempt to find a corresponding
 * commit object. Tags can optionally be ignored during matching.
 * The object type may be restricted to commit, tree, blob, or tag.
 * GOT_OBJ_TYPE_ANY will match any type of object.
 * A human-readable label can optionally be returned, which the caller should
 * dispose of with free(3).
 * Return GOT_ERR_NO_OBJ if no matching commit can be found.
 */
const struct got_error *got_repo_match_object_id(struct got_object_id **,
    char **, const char *, int, int, struct got_repository *);

/*
 * Attempt to find a tag object with a given name and target object type.
 * Return GOT_ERR_NO_OBJ if no matching tag can be found.
 */
const struct got_error *got_repo_object_match_tag(struct got_tag_object **,
    const char *, int, struct got_repository *);

/* A callback function which is invoked when a path is imported. */
typedef const struct got_error *(*got_repo_import_cb)(void *, const char *);

/*
 * Import an unversioned directory tree into the repository.
 * Creates a root commit, i.e. a commit with zero parents.
 */
const struct got_error *got_repo_import(struct got_object_id **, const char *,
    const char *, const char *, struct got_pathlist_head *,
    struct got_repository *, got_repo_import_cb, void *);