72 lines
1.9 KiB
Rust
72 lines
1.9 KiB
Rust
use std::fs::File;
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use std::io::{ErrorKind, Read};
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use std::path::Path;
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use anyhow::{Context, Result};
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use serde::Deserialize;
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use validator::Validate;
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use crate::modules;
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#[derive(Deserialize, Validate)]
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pub struct Mqtt {
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#[validate(length(min = 1))]
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pub host: String,
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pub port: u16,
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#[serde(default)]
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#[validate(nested)]
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pub credentials: Option<MqttCredentials>,
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}
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#[derive(Deserialize, Validate)]
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pub struct MqttCredentials {
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pub user: String,
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pub password: String,
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}
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#[derive(Deserialize, Validate)]
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pub struct Internal {
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#[validate(length(min = 2))]
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pub stable_id: String,
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}
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#[derive(Deserialize, Validate)]
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pub struct Config {
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#[validate(custom(function = "crate::util::validate_hass_id"))]
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pub friendly_id: String,
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#[validate(length(min = 1))]
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pub display_name: String,
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#[validate(nested)]
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pub mqtt: Mqtt,
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#[validate(nested)]
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pub modules: modules::Config,
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}
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pub fn load(config_file_path: &Path) -> Result<Option<Config>> {
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match File::open(config_file_path) {
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Ok(mut file) => {
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log::info!("Reading configuration file: {}", config_file_path.to_string_lossy());
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let mut string_content = String::new();
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file.read_to_string(&mut string_content).context("while reading the configuration file")?;
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let parsed = toml::from_str::<Config>(string_content.as_str()).context("while parsing the configuration file")?;
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Validate::validate(&parsed).context("while validating the configuration file")?;
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Ok(Some(parsed))
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}
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Err(error) if error.kind() == ErrorKind::NotFound => {
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log::error!("The configuration file does not exist: {}", config_file_path.to_string_lossy());
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log::info!("See the documentation: {}", env!("CARGO_PKG_HOMEPAGE"));
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Ok(None)
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}
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Err(error) => Err(error).context("while opening the configuration file"),
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}
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}
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