A way to find all the endpoints of the API

[zebracanevra]

This is somewhat a duplicate of one of the points in #17.

Currently, there is no way for a program to deal with a change in endpoints, for example when the image URL changed from http(s)://i.4cdn.org/'board'/src/'tim'.'ext' to http(s)://i.4cdn.org/'board'/'tim'.'ext'. Active developers could change these URLs, but programs that weren't updated were left in the dust.

I propose a new file called options.json (or similar), sitting at the root of http(s)://a.4cdn.org/.
This file would define all the routes to allow for programs to dynamically resolve any and all URLs needed for operation.

It's format could perhaps be like follows:

{
    "version": 1,
    "json": {
        "thread": "a.4cdn.org/`board`/thread/`no`.json",
        "page": "a.4cdn.org/`board`/`page`.json",
        "catalog": "a.4cdn.org/`board`/catalog.json",
        "threads": "a.4cdn.org/`board`/threads.json",
        "boards": "a.4cdn.org/boards.json"
    },
    "images": "i.4cdn.org/`board`/`tim`.`ext`",
    "thumbnails": "t.4cdn.org/`board`/`tim`s.jpg",
    "spoiler": "s.4cdn.org/image/spoiler.png",
    "custom-spoiler": "s.4cdn.org/image/spoiler-`board``custom_spoiler`.png"
    "icons": {
         ...list of all the other icon resources go here
         ...again using the backtick if there is to be replacing (only country for now)
    }
}

The version would be incremented for any change to the API, allowing programs to output a warning if the API is a newer version than what has been programmed.

[czaks]

Good proposal. How about a custom config for some boards? Some of them may have custom icons, etc. I'd propose also doing board/options.json. Also, including there links to the HTML versions of the threads may also be helpful.