# conflib
*yet another configuration library*

conflib is a small library to load configuration from environment variables or disk. Desired configuration is defined in a struct, then populated from a list of potential files, as well as environment variables.

Let's look at example usage:
```go
package main

import (
	"log"

	"git.janky.solutions/finn/conflib"
)

type Config struct {
	Sample    string `env:"SAMP"`
	MyExample int    `default:"9"`
	Nested    NestedConfig
}

type NestedConfig struct {
	SomeVariable string
}

func main() {
	config, err := conflib.Load[Config]("/etc/myapp.json", "myapp.json")
	if err != nil {
		log.Fatal(err)
	}

	log.Println("loaded config: ", config)
}
```

This will attempt to read `/etc/myapp.json` and `myapp.json` and unmarshal them into a `Config` struct. It will also check for environment variables that match the struct field names, unless overwridden. So the `Sample`
field will be populated from the `SAMP` environment variable due to the `env` tag on that field. `config.MyExample` will be populated from environment variable `MY_EXAMPLE`, and `config.Nested.SomeVariable` will be
populated by environment variable `NESTED_SOME_VARIABLE`. If none of the listed files are found and no environment variables match any field, an error will be returned.