\input texinfo
@c -*-texinfo-*-

@c %**start of header
@setfilename neocities.info
@documentencoding UTF-8
@settitle Neocities Reference Manual
@c %**end of header

@include version.texi

@copying
Copyright @copyright{} 2023 Ekaitz Zarraga

Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with no
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.  A
copy of the license is included in the section entitled ``GNU Free
Documentation License''.
@end copying

@dircategory The Algorithmic Language Scheme
@direntry
* Neocities: (neocities).
@end direntry

@titlepage
@title The Neocities Manual
@author Ekaitz

@page
@vskip 0pt plus 1filll
Edition @value{EDITION} @*
@value{UPDATED} @*

@insertcopying
@end titlepage

@contents

@c *********************************************************************
@node Top
@top Neocities

This document describes Neocities version @value{VERSION}.

@menu
* Introduction::                Why Neocities?
* Installation::                How to install
* CLI::                         Using the Command-Line Interface
* Guile API::                   Using the Guile API
* Development::                 Taking part and improving Guile-Neocities
@end menu

@c *********************************************************************
@node Introduction
@chapter Introduction

This project is a CLI tool and a Guile API to interact with Neocities.

@node Installation
@chapter Installation

With Guix you can just:

@example
$ guix install -f guix.scm
@end example

If you want to develop or install it in a different distribution you have to do
all by hand.

@node Dependencies
@section Dependencies

@subsection Run-time dependencies

@itemize
@item
@code{guile-3}
@item
@code{guile-json-4}
@item
@code{guile-gcrypt}
@end itemize

@subsection Development dependencies

@itemize
@item
@code{autoconf}
@item
@code{automake}
@item
@code{pkg-config}
@item
@code{texinfo}
@item
@code{make}
@end itemize

@node Building from source
@section Building from source

Like other GNU projects you can build this using autotools and make.
Make sure you have the dependencies (both run-time and dev) installed.

@example
$ autoreconf -vif
$ ./configure
$ make
@end example

If you wish to install you can @command{make install}, too.

@node CLI
@chapter CLI

The command line interface has a set of commands to interact with Neocities.
Running @command{neocities --help} lists them all with the documentation:

@example
$ neocities --help

neocities

USAGE:

  ENVIRONMENT VARIABLES:
      Export them:
        export NEOCITIES_USER=my_username
        ...
      Or use them in the command line call
        NEOCITIES_USER=my_username ... neocities

  Authentication:
    Your credentials
      export NEOCITIES_USER=my_username
      export NEOCITIES_PASS=my_password
    Or your API key:
      export NEOCITIES_KEY=my_key

  Target:
    export NEOCITIES_HOST=my-neocities-host.org  # defaults to neocities.org

  USAGE:
    neocities @{--help|--version|<command>@}

    Commands:
      neocities list <directory>
      neocities upload <local> <remote> [...]
      neocities delete <file> [...]
      neocities info
      neocities key
@end example

@node CLI Authentication
@section CLI Authentication

Command-Line Interface makes use of environment variables to obtain the
credentials of the Neocities instance.

You can use user/password authentication or the key. The command line example
in the previous section explains how to do that.

@node Guile API
@chapter Guile API

The very same functionality available from the command line is also available
using the Guile API.

@node Initialization
@section Initialization

There are two authentication methods available, user/pass and key, that can be
created using @code{make-neocities-auth-basic} and
@code{make-neocities-auth-api-key} respectively.

@deffn {Procedure} make-neocities-auth-basic user pass

Returns an authentication object based on username and password.

@itemize
@item
@var{user}: String with the Neocities username
@item
@var{pass}: String with the Neocities password
@end itemize
@end deffn

@deffn {Procedure} make-neocities-auth-api-key api-key

Returns an authentication object based on an API-key.

@itemize
@item
@var{api-key}: String with the API-Key obtained from Neocities
@end itemize
@end deffn

Once the authentication method is created, the API access has to be created.
@code{make-neocities-api} procedure does that job.

@deffn {Procedure} make-neocities-api host auth #:optional port

Returns a Neocitites API object with the provided authentication.

@itemize
@item
@var{host}: String with the hostname with the Neocities instance
@item
@var{auth}: Authentication object created with
@var{make-neocities-auth-api-key} or @var{make-neocities-auth-basic}
@item
@var{port}: Optional port number to connect to
@end itemize
@end deffn

Once the API is created it can be used to call the API functions.

@node Usage
@section Usage

These are the available API calls to Neocities API. All of them use convert
their arguments to JSON and use the Neocities API. They return two
@code{values} as Guile's http interface would return using @code{(web
client)}'s @code{http-request}. The first is the @code{response}, but the
second, the @code{body}, converted from JSON to Scheme using @code{guile-json}
library if the request is successful.

@deffn {Procedure} neocities-key api

Obtain an API-Key from Neocities.

@itemize
@item
@var{api}: API object created with @var{make-neocities-api}.
@end itemize
@end deffn


@deffn {Procedure} neocities-info api #:optional sitename

Obtain info about the Neocities site.

@itemize
@item
@var{api}: API object created with @var{make-neocities-api}.
@item
@var{sitename}: Optional argument. Site to get information from (string).
Defaults to the site of the authenticated user.
@end itemize
@end deffn


@deffn {Procedure} neocities-list api #:optional path

Obtain list of files in Neocities site.

@itemize
@item
@var{api}: API object created with @var{make-neocities-api}.
@item
@var{path}: Optional argument. Path to list (string). Defaults to the root
folder of the site (@code{/}).
@end itemize
@end deffn


@deffn {Procedure} neocities-upload api files

Upload files to Neocities.

@itemize
@item
@var{api}: API object created with @var{make-neocities-api}.
@item
@var{files}: List of pairs of paths. In the shape @code{((from . to) ...)}
@end itemize
@end deffn


@deffn {Procedure} neocities-delete api files

Delete files from Neocities site.

@itemize
@item
@var{api}: API object created with @var{make-neocities-api}.
@item
@var{files}: List of paths (strings) to delete.
@end itemize
@end deffn



@node Helper functions
@section Helper functions

Neocities returns important information inside of the responses of their API,
using the @code{result} field of their response, once the HTTP layer was
correctly processed. We also provide a function that checks that field to know
if the request was properly formulated.

@deffn {Procedure} neocities-success? body

Return @code{#t} if body represents a successful interaction and @code{#f}
otherwise.

@itemize
@item
@var{body}: Body of the response, the second of the @code{values} returned by
any call to the Neocities API.
@end itemize
@end deffn

@node Development
@chapter Development

The project files are managed using @code{guile-hall}, which give us some
automation for all the autotools stuff.

If you wish to test the code in your development environment, the tools should
provide you a @command{pre-inst-env} script that enables you to do that:

@example
./pre-inst-env neocities --help
@end example

On top of that, taking part in the project is similar to any GNU project. You
can send your patches to the maintainer (see the email in the commits) or in
the Github mirror.

@bye