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use std::collections::HashMap;
use mingling::{LazyInit, Program, macros::program_setup};
use crate::ThisProgram;
#[derive(Debug, Default, Clone)]
pub struct ResMlingConfig {
kvp: HashMap<String, String>,
}
impl ResMlingConfig {
/// Edit a KVP entry. Empty string removes the key.
pub fn edit(&mut self, key: &str, value: &str) {
if value.is_empty() {
self.kvp.remove(key);
} else {
self.kvp.insert(key.to_string(), value.to_string());
}
}
/// Get a value by key, returning "" if it doesn't exist.
pub fn get(&self, key: &str) -> &str {
self.kvp.get(key).map(|s| s.as_str()).unwrap_or("")
}
/// Get a value by key, returning `or` if it doesn't exist.
pub fn get_or<'a>(&'a self, key: &'a str, or: &'a str) -> &'a str {
if self.kvp.contains_key(key) {
self.kvp.get(key).map(|s| s.as_str()).unwrap_or(or)
} else {
or
}
}
/// Get a value by key, returning `or` if it doesn't exist and setting it.
pub fn get_or_set<'a>(&'a mut self, key: &'a str, or: &'a str) -> &'a str {
if !self.kvp.contains_key(key) {
self.kvp.insert(key.to_string(), or.to_string());
}
self.kvp.get(key).map(|s| s.as_str()).unwrap_or(or)
}
/// Read the config from disk, defaulting to empty if not present.
pub fn read() -> Self {
let path = std::path::Path::new("");
Self::read_from_path(path)
}
/// Read the config from a file at the given path.
pub fn read_from_path(path: &std::path::Path) -> Self {
let mut config = Self::default();
if let Ok(content) = std::fs::read_to_string(path)
&& let Ok(json_value) = serde_json::from_str::<serde_json::Value>(&content)
&& let serde_json::Value::Object(map) = json_value
{
for (key, value) in map {
if let serde_json::Value::String(s) = value {
config.kvp.insert(key, s);
}
}
}
config
}
/// Write the config to disk at the given path.
pub fn write_to_path(&self, path: &std::path::Path) {
if let Some(parent) = path.parent() {
let _ = std::fs::create_dir_all(parent);
}
let json_value = serde_json::Value::Object(
self.kvp
.iter()
.map(|(k, v)| (k.clone(), serde_json::Value::String(v.clone())))
.collect(),
);
if let Ok(json_string) = serde_json::to_string(&json_value) {
let _ = std::fs::write(path, json_string);
}
}
/// Write the config to the default data directory path.
pub fn write(&self) {
if let Some(data_dir) = dirs::data_dir() {
let path = data_dir.join("mingling").join("mling-cfg.json");
self.write_to_path(&path);
}
}
}
impl From<HashMap<String, String>> for ResMlingConfig {
fn from(kvp: HashMap<String, String>) -> Self {
Self { kvp }
}
}
impl From<ResMlingConfig> for HashMap<String, String> {
fn from(config: ResMlingConfig) -> Self {
config.kvp
}
}
#[program_setup]
pub fn mling_config_setup(p: &mut Program<ThisProgram>) {
p.with_resource(
ResMlingConfig::lazy_init(ResMlingConfig::read).with_on_drop(|config: ResMlingConfig| {
config.write();
}),
);
}
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