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use std::path::PathBuf;
use serde::de::DeserializeOwned;
use serde::{Deserialize, Serialize};
use crate::constants;
use crate::error::BridgerError;
#[derive(Clone, Debug)]
pub enum Names {
Bridger,
BridgeTemplate,
BridgePangolinRopsten,
BridgeDarwiniaEthereum,
BridgePangolinPangoro,
BridgeDarwiniaCrab,
BridgePangoroChapel,
BridgePangolinPangolinParachain,
BridgeCrabCrabParachain,
BridgePangoroGoerli,
}
impl Names {
pub fn name(&self) -> &'static str {
match self {
Self::Bridger => "bridger",
Self::BridgeTemplate => "bridge-template",
Self::BridgePangolinRopsten => "bridge-pangolin-ropsten",
Self::BridgeDarwiniaEthereum => "bridge-darwinia-ethereum",
Self::BridgePangolinPangoro => "bridge-pangolin-pangoro",
Self::BridgeDarwiniaCrab => "bridge-darwinia-crab",
Self::BridgePangoroChapel => "bridge-pangoro-chapel",
Self::BridgePangolinPangolinParachain => "bridge-pangolin-pangolinparachain",
Self::BridgeCrabCrabParachain => "bridge-crab-crabparachain",
Self::BridgePangoroGoerli => "bridge-pangoro-goerli",
}
}
}
#[derive(Debug)]
pub struct Config {
base_path: PathBuf,
}
#[derive(Clone, Debug, Deserialize, Serialize, strum::EnumString, strum::EnumVariantNames)]
#[strum(serialize_all = "kebab_case")]
pub enum ConfigFormat {
#[serde(rename = "yml")]
Yml,
#[serde(rename = "json")]
Json,
#[serde(rename = "toml")]
Toml,
}
impl ConfigFormat {
pub fn extension(&self) -> &'static str {
match self {
ConfigFormat::Yml => "yml",
ConfigFormat::Json => "json",
ConfigFormat::Toml => "toml",
}
}
}
impl Config {
fn new() -> Self {
let base_path = constants::bridger_home();
Self { base_path }
}
}
impl Config {
pub fn store(name: Names, config: impl Serialize) -> color_eyre::Result<()> {
Self::new().persist(name.name(), config, None)
}
pub fn store_with_format(
name: Names,
config: impl Serialize,
format: ConfigFormat,
) -> color_eyre::Result<()> {
Self::new().persist(name.name(), config, Some(format))
}
pub fn restore<T: DeserializeOwned>(name: Names) -> color_eyre::Result<T> {
Self::new().load(name.name())
}
pub fn exists(name: Names) -> bool {
Self::new()
.find_config_file(name.name())
.unwrap_or_default()
.is_some()
}
}
impl Config {
fn raw_config(
&self,
config: impl Serialize,
format: &ConfigFormat,
) -> color_eyre::Result<String> {
let content = match format {
ConfigFormat::Yml => serde_yaml::to_string(&config)?,
ConfigFormat::Json => serde_json::to_string_pretty(&config)?,
ConfigFormat::Toml => {
let value = serde_json::to_value(&config)?;
let value: toml::Value = serde_json::from_value(value)?;
toml::to_string(&value)?
}
};
Ok(content)
}
fn find_config_file(
&self,
name: impl AsRef<str>,
) -> color_eyre::Result<Option<(PathBuf, ConfigFormat)>> {
let mut config_file = None;
if !self.base_path.exists() {
tracing::warn!(target: "bridger", "The base_path ({}) is not found.", self.base_path.display());
return Ok(None);
}
let read_dir = std::fs::read_dir(&self.base_path)?;
for path in read_dir {
let file = path?.path();
if !file.is_file() {
continue;
}
let file_name = match file.file_name() {
Some(v) => match v.to_str() {
Some(z) => z.to_string(),
None => continue,
},
None => continue,
};
if file_name.starts_with(name.as_ref()) {
config_file = Some(file);
break;
}
}
match config_file {
Some(v) => {
let extension = v.extension().and_then(|v| v.to_str()).and_then(|s| {
match &s.to_lowercase()[..] {
"toml" => Some(ConfigFormat::Toml),
"json" => Some(ConfigFormat::Json),
"yml" => Some(ConfigFormat::Yml),
_ => None,
}
});
match extension {
Some(e) => Ok(Some((v, e))),
None => Ok(None),
}
}
None => Ok(None),
}
}
fn persist(
&self,
name: impl AsRef<str>,
config: impl Serialize,
format: Option<ConfigFormat>,
) -> color_eyre::Result<()> {
if !self.base_path.exists() {
std::fs::create_dir_all(&self.base_path)?;
}
let format = format.unwrap_or(
self.find_config_file(name.as_ref())?
.map(|(_, format)| format)
.unwrap_or(ConfigFormat::Toml),
);
let config = self.raw_config(config, &format)?;
let path = self
.base_path
.join(format!("{}.{}", name.as_ref(), format.extension()));
std::fs::write(path, config)?;
Ok(())
}
fn load<T: DeserializeOwned>(&self, name: impl AsRef<str>) -> color_eyre::Result<T> {
if !self.base_path.exists() {
return Err(std::io::Error::new(
std::io::ErrorKind::NotFound,
format!("The config path {:?} not found", &self.base_path),
)
.into());
}
let (path, _) = self.find_config_file(name.as_ref())?.ok_or_else(|| {
BridgerError::Config(format!(
"Not found config file for name: {} in path: {}",
name.as_ref(),
self.base_path.display()
))
})?;
let mut c = config::Config::default();
c.merge(config::File::from(path.clone()))?;
let tc = c.try_into::<T>().map_err(|e| {
BridgerError::Config(format!(
"Failed to load config: {:?} in path: {:?} for name {}",
e,
path,
name.as_ref()
))
})?;
Ok(tc)
}
}