Commit graph

1161 commits

Author SHA1 Message Date
William Carroll
a5ef9b11a6 Remove dead code
Removing a half-baked Monzo HTTP client. A more fully supported and differently
designed one is forthcoming.
2020-02-10 10:06:40 +00:00
William Carroll
64654d1d6d Create gopkgs directory for golang libs
- Created a gopkgs directory and registered it with default.nix's readTree
- Moved monzo_ynab/utils -> gopkgs
- Consumed utils.go in main.go
- Renamed monzo_ynab -> job
2020-02-10 10:06:40 +00:00
William Carroll
ec4c8472ca Support simple key-value store
In order to persist my access and refresh tokens, I needed a store. I think
using a database like SQLite may have been fine for this but was heavier weight
than what I wanted.

I decided to write a simple key-value store when the state is encoded and JSON
in a file called kv.json.

TODO:
- Support field nesting
- Support better error handling
- Support parameterizing the store path (i.e. ./kv.json)
2020-02-10 10:06:40 +00:00
William Carroll
7f8a5176ce Create server for managing Monzo credentials
I created a server to manage my access and refresh tokens. This server exposes a
larger API than it needs to at the moment, but that should change. The goal is
to expose a GET at /token to retrieve a valid access token. The server should
take care of refreshing tokens before they expire and getting entirely new
tokens, should they become so stale that I need to re-authorize my application.

A lot of my development of this project has been clumsy. I'm new to Go; I didn't
understand OAuth2.0; I'm learning concurrent programming (outside of the context
of comfortable Elixir/Erlang).

My habits for writing programs in compiled languages feels amateurish. I find
myself dropping log.Println's all over the source code when I should be using
proper debugging tools like Delve and properly logging with things like
httputil.Dump{Request,Response}.

The application right now is in a transitional state. There is still plenty of
code in main.go that belongs in tokens.go. For instance, the client
authorization code belongs in the tokens server.

Another question I haven't answered is where is the monzo client that I can use
to make function calls like `monzo.Transactions` or `monzo.Accounts`?

The benefit of having a tokens server is that it allows me to maintain state of
the tokens while I'm developing. This way, I can stop and start main.go without
disturbing the state of the access tokens. Of course this isn't the primary
benefit, which is to abstract over the OAuth details and expose an API
that gives me an access token whenever I request one.

The first benefit that I listed could and perhaps should be solved by
introducing some simple persistence. I'd like to write the access tokens to disk
when I shutdown the tokens server and read them from disk when I start the
tokens server. This will come. I could have done this before introducing the
tokens server, and it would have saved me a few hours I think.

Where has my time gone? Mostly I've been re-authorizing my client
unnecessarily. This process is expensive because it opens a web browser, asks me
to enter my email address, sends me an email, I then click the link in that
email. Overall this takes maybe 1-3 minutes in total. Before my tokens server
existed, however, I was doing this about 10-20 times per hour. It's a little
disappointing that I didn't rectify this earlier. I'd like to remain vigilant
and avoid making similar workflow mistakes as I move ahead.
2020-02-10 10:06:40 +00:00
William Carroll
e3ee0734e5 Document more API requests
I'm continuing to use restclient-mode, and I'm enjoying it. Updating the scratch
file with more endpoints and credentials.
2020-02-10 10:06:40 +00:00
William Carroll
2d3428c809 Practice concurrency in golang
Uploading some snippets I created to help me better understand concurrency in
general and specifically concurrency in golang.
2020-02-10 10:06:40 +00:00
William Carroll
2af05f698c Support vterm-mgt.el
I enjoyed using term-switcher so much that I ended up adopting vterm as my
primary terminal. After reaching for vterm as often as I did, I realized that I
would enjoy supporting cycling through instances, creating new instances,
deleting existing instances, renaming instances. Thus spawned vterm-mgt.el.

I'm particularly excited about the KBD to toggle between vterm instances and
source code buffers.
2020-02-10 10:06:40 +00:00
William Carroll
8584059e7c Support cycle/{append,remove}
Supporting these functions was a little tricky. For example, how should we
handle calling cycle/remove on the item that is currently focused? After
attempting to be clever, I decided to just set the value to nil and let the
consumer decide what is best for them. I can always support a more opinionated
version that fallsback to previous-index if previous-index is set. But until I
have a better idea of how I'm going to consume this, I think nil is the best
option.
2020-02-10 10:06:33 +00:00
William Carroll
f145bc9eb6 Support cycle/focus-item
I oftentimes call `cycle/focus` and pass `(lambda (a) (equal a b))`. This
function should tighten up my code.
2020-02-08 15:55:59 +00:00
William Carroll
3f54dd8601 Support cycle/empty?
Add predicate for determining if a cycle contains items.

Updated cycle/{new,from-list} to support setting current-index to nil when a
consumer calls it with an empty list.
2020-02-08 15:55:53 +00:00
William Carroll
5ade510598 Practice writing, printing, traversing matrices
- generate_board: writing
- print_board: reading
- neighbords: reading

I'm working up to creating a function to initialize a game board where no three
adjacent cells either vertically or horizontally should be the same value.
2020-02-08 12:01:25 +00:00
William Carroll
c2971ee04e Practice matrix traversals
Recently I've been asked a few interview questions that involve reading from or
writing to a grid, matrix, game board, etc. I am not as fast as I'd like to be
at this, so I'm going practice.

Here I'm practicing reading from existing matrices. I should practice writing to
empty boards, reading neigboring cells, wrapping around the board (in the case
of Conway's Game of Life), and other useful practices.
2020-02-08 11:38:29 +00:00
William Carroll
1b74342219 Support a restclient.el scratch buffer
I've been using restclient.el and `restclient-mode` lately to test API calls,
and I'm enjoying. I think it might make sense to track these scratch files in
the repo. Who knows? They may serve as a form of documentation.
2020-02-07 21:35:18 +00:00
William Carroll
74211a3c02 Support serde for Monzo and YNAB transaction structs
Define transaction structs for both Monzo and YNAB. Each package has a `main`
function that runs some shallow but preliminary round-trip tests for the
serializers and decoders.

The fixtures.json file that each of them is referencing has been ignored in case
either contains confidential data of which I'm unaware.
2020-02-07 21:33:08 +00:00
William Carroll
4f63b99cee Support YNAB personal-access-token
Define my YNAB personal access token as an environment variable. Prefix Monzo
environment variables with "monzo_" to more easily differentiate between Monzo
credentials and YNAB credentials.
2020-02-07 21:30:24 +00:00
William Carroll
938c1a4eb0 Start lorri with sytemd
Whenever possible, prefer starting things as systemd units instead of
instantiating them in ~/.profile and other dotfiles.
2020-02-07 11:01:34 +00:00
William Carroll
048b7867bf Add bin dependencies to wpcarros-emacs
I removed most of the packages that I install with `nix-env`. You can view these
with `nix-env --query`. This is one small step in a grander project to migrate
entirely to a declarative config managed by Nix.
2020-02-07 11:01:24 +00:00
William Carroll
c15a393112 Start lorri daemon in ~/.profile
This does two things:
1. Starts lorri daemon
2. Moves ssh-agent and docker daemon startup calls to ~/.profile

I'm still not entirely sure when ~/.profile is evaluated... I'd like to use
systemd to startup and manage these background services, but I currently don't
have a strong enough desire to do this.
2020-02-07 11:01:24 +00:00
William Carroll
185fa0dda5 Escape sub-shell in config.fish to prevent evaluation
`stack path --local-doc-root` gets evaluated when I create a shell, which is not
what I intended.
2020-02-07 11:01:24 +00:00
William Carroll
0009ba2d71 Drop support for dkish
dkish was an idea to quickly create REPLs for all sorts of languages like
Haskell, Elixir, Clojure. I haven't used these, and if I started wanting these
with my newfound comfort with Nix, I think I'd reach for that instead.
2020-02-07 11:01:24 +00:00
William Carroll
52d284f59d Remove assertions that prelude/executable-exists?
I'm in the midst of transitioning onto a few new tools.

My previous workflow just used `nix-env` to install *some* packages. I didn't
have a prescribed methodology for which packages I would install using `nix-env`
and which ones I would install using `sudo apt-get install`. Sometimes if a
package would be available in my aptitude repositories, I'd use that; other
times when it wasn't available I'd use `nix-env`. One complication about being
on gLinux intead of NixOS is that some packages (e.g. nixpkgs.terminator) is
available via `nix-env -iA nixpkgs.terminator`, but the installation won't
actually run on my gLinux. In these instances, I would install terminator from
the aptitude repositories.

Then @tazjin introduced me to his Emacs configuration that he builds using
Nix. What appealed to me about his built Emacs is that it worked as expected on
either a NixOS machine and on gLinux (and presumably on other non-NixOS machines
as well).

A setup towards which I'm working is to own one or a few NixOS machines whose
configurations are entirely managed with Nix. On devices like my work machines,
which cannot run NixOS, I can build as much of the software that I need using
Nix and attempt to minimize the ad hoc configuration either with shell scripts,
python, golang, or more Nix code... it's clear that I still don't have a clear
idea of how that part will work.

For now, I'm adopting nix, nix-env, lorri, direnv, and weening off of aptitude
as much as I can. Things are a bit messy, but my general trend feels
positive. Stay tuned for more updates.
2020-02-07 11:01:24 +00:00
William Carroll
b47ca8b876 Support lorri
From what I currently understand, lorri is a tool (sponsored by Target) that
uses nix and direnv to build and switch between environments quickly and
easily.

When you run `lorri init` inside of a directory, lorri creates a shell.nix and
an .envrc file. The .envrc file calls `eval "$(lorri direnv)"` and the shell.nix
calls `<nixpkgs>.mkShell`, which creates a shell environment exposing
dependencies on $PATH and environment variables. lorri uses direnv to ensure
that $PATH and the environment variables are available depending on your CWD.

lorri becomes especially powerful because of Emacs's `direnv-mode`, which
ensures that Emacs buffers can access anything exposed by direnv as well.

I still need to learn more about how lorri works and how it will affect my
workflow, but I'm enjoying what I've seen thus far, and I'm optimistic about the
road ahead.
2020-02-07 11:01:24 +00:00
William Carroll
a91d00fd94 Host go directory for some go scratch work
actors.go is my attempt to better understand golang's channels. I'm mapping my
understanding of concurrency from my experience with Elixir / Erlang and actors
onto golang until I have more opinions.
2020-02-06 16:59:04 +00:00
William Carroll
5df3bb4e40 Partition deepmind directory into two parts
Since I did not pass my one-site interview with DM, but I have been invited to
attempt again, I decided to partition this directory into two parts:
1. part_one: Hosting the exercises that I completed before my first attempt at
   earning the job.
2. part_two: Hosting the exercise that I will complete before my second attempt
   at earning the job.
2020-02-06 16:56:06 +00:00
William Carroll
b4dd290745 Temporarily disable initialization code
My Emacs initialization fails for a few reasons, which I haven't prioritized
time to investigate yet:

- Some OCaml deps are absent
- godoc is absent
2020-02-05 23:33:29 +00:00
William Carroll
fafabc6e4a Support OAuth 2.0 login flow for Monzo API
After some toil and lots of learning, monzo_ynab is receiving access and refresh
tokens from Monzo. I can now use these tokens to fetch my transactions from the
past 24 hours and then forward them along to YNAB.

If YNAB's API requires OAuth 2.0 login flow for authorization, I should be able
to set that up in about an hour, which would be much faster than it took me to
setup the login flow for Monzo. Learning can be a powerful thing.

See the TODOs scattered around for a general idea of some (but not all) of the
work that remains.

TL;DR
- Package monzo_ynab with buildGo
- Move some utility functions to sibling packages
- Add a README with a project overview, installation instructions, and a brief
  note about my ideas for deployment

Note: I have some outstanding questions about how to manage state in Go. Should
I use channels? Should I use a library? Are top-level variables enough? Answers
to some or all of these questions and more coming soon...
2020-02-05 23:33:23 +00:00
William Carroll
138070f3f6 Inherit parent's .envrc variables
I discovered direnv's convenient `source_up` function today. I needed it to
inherit the values defined in ~/briefcase/.envrc, and it's working exactly as I
expected it would. What a fine piece of software direnv is.
2020-02-05 23:26:57 +00:00
William Carroll
1772408c39 Further support Monzo OAuth2.0 login flow
I'm now pulling the authorization code off of Monzo's request to my redirect
URI. I intend to use exchange that code for an access and refresh token. Once I
have these two items, I should be able to interact with Monzo's API much more
easily.
2020-02-05 17:58:32 +00:00
William Carroll
05135ef875 Further configure Go tooling
- Prefer goimports to gofmt. goimports calls gofmt; it also adds and removes
  dependencies.
- Assert the presence of goimports, godoc, godef
- KBD godef to M-.
- Support the M-x compile command for calling `go build -v`
2020-02-05 17:58:15 +00:00
William Carroll
7c2933f3c3 Support hgwhat alias
Support a Mercurial alias for listing the files that have changed on a
particular branch.

This commit is particularly noisy because I reformatted the above aliases to
align with the new width.
2020-02-05 14:41:20 +00:00
William Carroll
70034d4cb9 Begin supporting Monzo OAuth 2.0 login flow
What's done:
- Basic support of the client authorization grant stage of the OAuth login
  flow:
  - Open Google Chrome to point the user to Monzo's client authorization page.
  - Created a web server to retrieve the authorization code from Monzo.

What's left:
- Pulling the authorization grant (i.e. code) from Monzo's request and
  exchanging it for an access token and a refresh token, which can be used to
  make subsequent requests.

Unanswered question:
- Assuming this is a stateless app, where should I store the access token and
  refresh token to avoid the authorization flow. I'd like to avoid the client
  authorization flow because ideally I could run this app as a job that runs
  periodically throughout the day without requiring my interactions with it.

Some interesting notes:
- Notice how in the .envrc file, it's possible to make calls to `pass`. This
  allows me to check in the .envrc files without obscuring their content. It
  also allows me to consume these values in my app by using
  `os.Getenv("client_secret")`, which I find straightforward. Overall, I'm quite
  pleased to have stumbled upon this pattern - assuming that it's secure.
2020-02-04 23:00:57 +00:00
William Carroll
cce926d60f Remove KBDs supporting undesired Ergodox configuration
I mistakenly mapped one of my dual-function keys on my Ergodox to send Shift+CMD
instead of CMD. When some of my Emacs keybindings weren't firing, I noticed that
the key event they received was some like `C-S-s-<char>` instead of say
`C-s-<char>`. As a quick fix, I duplicated each of my keybindings that relied on
the CMD key to support Shift+CMD as well until I remapped the key on my
Ergodox. This morning, I remapped the Shift+CMD key to CMD, so I'm bidding adieu
to this code.
2020-02-03 10:54:15 +00:00
William Carroll
916e46d7ce Support script to download RFCs to my Kindle
Today I learned that you can email your Kindle files to read them using the
paperwhite display. I'm attempting to read RFCs, so after reading 1/4 of the way
through RFC6479 (on OAuth2.0), I realized that it might be easier to read on my
Kindle instead of on my computer screen. Out of this, rfcToKindle.go was born.

I'm not sure if I'd like to publish this or not.
2020-02-02 18:54:26 +00:00
William Carroll
4de3e5c392 Add KBDs to vterm
Support pasting and scrolling.
2020-02-02 18:31:39 +00:00
William Carroll
ffbe5c9757 Support emacs fn for rebuilding wpcarros-emacs
Call `M-x` `nix/rebuild-emacs` to build and link `wpcarros-emacs`.
2020-02-02 18:31:33 +00:00
William Carroll
2cfcb1c34d Support focusing EXWM X-application buffers
Press `<M-escape.` to display a list of buffers hosting X applications. Use
`completing-read` to select and focus one of these.

See the function docs and TODOs for more information.
2020-02-02 18:31:33 +00:00
William Carroll
2e76601f70 Blacklist additional non-source-code modes
I don't want vterm buffers or magit buffers showing up when I cycle throw
buffers.
2020-02-02 18:31:33 +00:00
William Carroll
5521db80b1 Attempt to debug xrandr behavior in display.el
Currently, after I connect my monitor to my laptop, I run `display/enable-4k`,
which will use `xrandr` to enable the display. The scaling of the enabled
display is not what I expect. So I've habituated re-running the same function,
`display/enable-4k`, which scales the display and meets my expectations.

What's strange is that if instead of running `display/enable-4k` the first time
from Emacs, I call `xrandr ...` from a terminal, this enables the display and
scales it properly on the first invocation.

I'm unsure how to explain this behavior. It's possible that a environment
variable is set properly in the terminal that isn't set in my Emacs, but this is
just a guess.

I'm going to using a different invocation in display.el that explicitly passes
the monitors dimensions. Let's see if that works.
2020-02-02 18:31:32 +00:00
William Carroll
2ec436b2b5 Support KBDs for term-switcher package
To facilitate transitioning from using `terminator` to using `vterm`, I'm
defining some KBDs that I hope will help me habituate my usage of `vterm`.
2020-02-02 18:31:32 +00:00
William Carroll
851aba8201 Support timestring.el
Quickly access strings that encode time is various formats. See the module docs
in timestring.el for more information.
2020-02-02 18:31:32 +00:00
William Carroll
6fd9947ec8 Re-write delete_dotfile_symlinks in golang
I'm currently quite unfamiliar with golang. As an exercise to help me onboard
onto golang, and as a proof-of-concept to see if golang is a viable substitute
for Python as a scripting language, I decided to port my delete_dotfile_symlinks
to golang.

In the process, renamed ./python -> ./scripts, which is a more accommodating
name for a directory.
2020-02-02 18:31:32 +00:00
William Carroll
e8b47d5030 Support golang
I decided to start writing go code for scripts instead of python. I think this
will be a learning opportunity for me and should increase the integrity of my
scripts by adding some static type checking.
2020-01-31 23:18:59 +00:00
William Carroll
184404d542 Add deploy.nix to blog
Adding a deploy.nix to output docker images based on the <briefcase>.blog
derivation. See the deploy/README.md docs for more information.
2020-01-31 16:30:56 +00:00
William Carroll
755554176d Consolidate injected dependencies
Move the three injected dependencies into one.
2020-01-31 16:30:25 +00:00
William Carroll
4e0b18506f Rename docker -> deploy
I think the name deploy is more representative of the purpose of this directory
since docker is just one of a few tools that I'm using to deploy software.
2020-01-31 16:29:22 +00:00
William Carroll
265d202908 Render pandoc output to index.html
Using index.html allows us to use the Google AdSense script and extend the
styling by adding a CSS stylesheet.
2020-01-31 16:13:22 +00:00
William Carroll
837cfe07c7 Rename dotfiles -> briefcase
Renaming my mono-repo briefcase.

I first introduced this commit in master, but it introduced a bug where one of
two things would happen:

1. Emacs wouldn't start and would crash X.
2. Emacs would start but my keyboard wouldn't work.

I learned some valuable debugging skills in the process. Here are some of them:

When my keyboard was broken, I wanted to control my computer using my
laptop. Thankfully this is possible by using `x2x`, which forward X events from
the SSH client to the SSH host.

```shell
> # I'm unsure if this is the *exact* command
> ssh -X desktop x2x -west :0.0
```

Git commit-local bisecting. I didn't need to do a `git bisect` because I knew
which commit introduced the bug; it was HEAD, master. But -- as you can see from
the size of this commit -- there are many changes involved. I wanted to binary
search through the changes, so I did the following workflow using `magit`:

- git reset --soft HEAD^
- git stash 1/2 of the files changed
- re-run `nix-env -f ~/briefcase/emacs -i`
- restart X session
- If the problem persists, the bug exists in the non-stashed files. Repeat the
  process until you find the bug.

In my case, the bug was pretty benign. Calling `(exwm/switch "Dotfiles")` at the
bottom of `window-manager.el` was failing because "Dotfiles" is the name of a
non-existent workspace; it should've been `(exwm/switch "Briefcase")`.

There may have been more problems. I changed a few other things along the way,
including exposing the env vars BRIEFCASE to `wpcarros-emacs` inside of
`emacs/default.nix`.

The important part is that this was a valuable learning opportunity, and I'm
glad that I'm walking away from the two days of "lost productivity" feeling
actually productive.
2020-01-31 15:27:48 +00:00
William Carroll
a65b895c8e Support script to audit, remove dotfile symlinks
Adding a simple script to help me manage the symlinks to the dotfiles
managed by my mono-repo.
2020-01-31 14:28:08 +00:00
William Carroll
edea127e07 Support building wpcarros-emacs
I'm using a Makefile until I can remember the command:

```shell
> nix-env -f . -i
```

This will install (i.e. `-i`) any derivations instantiated from the Nix
expression resolvable by `-f`. Ideally the incantation will look something like
this:

```shell
> nix-env -f '<universe>' -iA emacs
```

Informing `nix-env` to install all of the derivations created by the expression
at attribute `emacs` in my `<universe>` repository. For now two things are
preventing this:

1. `emacs` isn't an attribute in my top-level expression defined in the
   `default.nix`.
2. If I do add `emacs` as an attribute and call the above command, my usage of
   `readTree` results in `pkgs` missing `.lib` and a few other stdlib commands
   that are available in `(import <nixpkgs> {})`.

A fix for both of these should be forthcoming.
2020-01-31 13:20:18 +00:00
William Carroll
039b260cac Point <nixpkgs> to ~/nixpkgs
At the moment, all of the Nix repositories that I'm consuming exist in ~. To
keep things consistent, I ran:

```shell
> hub clone nixos/nixpkgs ~/nixpkgs
```
2020-01-31 12:44:38 +00:00