finhouse

This is just a hobby project where i play around with different rust ideas. The purpose is to get a better overview of taking a loan for housing.

A demo can be seen here: Demo

Usage

• You can use suffixes K(1,000) and M(1,000,000) to specify units. If not specified it uses the default one, meaning the one specified in the field before writing.
• Some value depend on the years specified above the plot and some depend on the specific entry.
• Each tab has its own set of parameters you can customize.
• Right click on tabs to remove them.
• Black boxes (Darkmode) can be edited to custom text.
• Parameters are cached on your pc/browser.
  • Remember if you use chrome and maybe chromium based browsers and you don't want to loose your parameters wait 10 seconds before refreshing/closing it. See known issues for more info. This is not a problem for firefox.
  • Cache is reset if some specific parts of the code is changed and it get's redeployed.

Running the application

Web

You might need to install trunk binary and wasm targets trunk serve --release

Native

cargo run --release

You can optionally specify the target for the binary, that way it speeds up the compile time for native by a lot.

Roadmap

• Move most roadmap entries to git issues instead.
• Create regression tests.
• Create parameter side bar.
  • Housing, mortgage, interest etc
  • Payments, tax deduction, etc
  • Other expenses.
• Add stocks parameters.
  • Monthly put.
• Add default with house vs renting and stocks.
• Add copy entry to new tab option.
• Add inflation.
• Add total expenses paid for each expense. (box plot?)
• Hover over text.
• Create top bar with tabs for each entry.
• Add dark and light mode.
• Add plot for value over time.
  • Add axis text.
  • Add Loan plot.
  • Add "legend" with minimum payment on the plot for each line.
  • Add option for other plots, e.g. loan payment, stock, value, total which checkboxes for what to include in main plot.
• Add readme/tooltip/popup about controls.
• Remove dependency on server being online (offline mode if cached).
• Find a way to avoid double maintenance with the sidebar widgets.
  • Perhaps base it off a json file. This also makes multiple languages easier.
• Support multiple languages.
• Add "Kurs tab", i don't know the english world.
• Change font size in plot.
• Make tabs editable and clickable at the same time.
• Changeable order of tabs.
• Add loan types. e.g. "Realkredit" and "banklån"
• Make text red if invalid value. e.g. if "Rådighedsbeløb" is negative.
• Only render on value change.
• Add support for different comma seperators. e.g. select the type in a field or something.
• Add [x] to topbar tabs and to expenses.
• Automatically deploy when new commits are available to main.

Known Issues

• Fix state saving on exit on chrome.
  • Currently chrome only saves the state every 10 seconds, however it should also save on shutdown/refresh like firefox does.
• Javascript file needs "./" to work with github page.
• Cache gets reset when main struct has been modified.
• Reference counted Cells are deserialized to default or previous value when loading the page. However they should all reference the same. Workaround is currently implemented.
• Floating point inaccuracies/fluctuations in current calculations when sliding some parameters.
• If you leave in e.g. % or Dkk the field is not accepted. Can be solved by expanding the custom parser.
• Interest deduction entry is not correct, since it varies over time (Depends on loan at given time), thus should be plotted instead.

Misc

• Remove Percentage type and just use f64 with a custom formatter for egui.