#![allow(non_camel_case_types)]

use std::os::raw::{c_int, c_char, c_uchar};

#[link(name = "git2")]
extern {
    pub fn git_libgit2_init() -> c_int;
    pub fn git_libgit2_shutdown() -> c_int;
    pub fn giterr_last() -> *const git_error;

    pub fn git_repository_open(out: *mut *mut git_repository,
                               path: *const c_char) -> c_int;
    pub fn git_repository_free(repo: *mut git_repository);

    pub fn git_reference_name_to_id(out: *mut git_oid,
                                    repo: *mut git_repository,
                                    reference: *const c_char) -> c_int;

    pub fn git_commit_lookup(out: *mut *mut git_commit,
                             repo: *mut git_repository,
                             id: *const git_oid) -> c_int;

    pub fn git_commit_author(commit: *const git_commit) -> *const git_signature;
    pub fn git_commit_message(commit: *const git_commit) -> *const c_char;
    pub fn git_commit_free(commit: *mut git_commit);
}

#[repr(C)] pub struct git_repository { _private: [u8; 0] }
#[repr(C)] pub struct git_commit { _private: [u8; 0] }

#[repr(C)]
pub struct git_error {
    pub message: *const c_char,
    pub klass: c_int
}

pub const GIT_OID_RAWSZ: usize = 20;

#[repr(C)]
pub struct git_oid {
    pub id: [c_uchar; GIT_OID_RAWSZ]
}

pub type git_time_t = i64;

#[repr(C)]
pub struct git_time {
    pub time: git_time_t,
    pub offset: c_int
}

#[repr(C)]
pub struct git_signature {
    pub name: *const c_char,
    pub email: *const c_char,
    pub when: git_time
}