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use std::error::Error;
use std::fs;
use std::io;
use std::path::PathBuf;
use regex::{Captures,Regex};
use crate::themeable::Themeable;
use crate::operation::Operation;
use crate::config::Config as ThconConfig;
use serde::Deserialize;
#[derive(Debug, Deserialize)]
pub struct Config {
light: String,
dark: String,
config: Option<String>,
}
pub struct VSCode;
impl VSCode {
fn settings_json_path(&self) -> PathBuf {
[
dirs::config_dir().unwrap().to_str().unwrap(),
"Code",
"User",
"settings.json"
].iter().collect()
}
}
impl Themeable for VSCode {
fn has_config(&self, config: &ThconConfig) -> bool {
config.vscode.is_some()
}
fn switch(&self, config: &ThconConfig, operation: &Operation) -> Result<(), Box<dyn Error>> {
let config = match &config.vscode {
Some(vscode) => vscode,
None => {
return Err(
Box::new(
io::Error::new(
io::ErrorKind::NotFound,
"Couldn't find [vscode] section in thcon.toml"
)
)
);
}
};
let theme = match operation {
Operation::Darken => &config.dark,
Operation::Lighten => &config.light,
};
let settings = fs::read_to_string(self.settings_json_path())?;
let settings = replace_color_theme(&settings, theme);
fs::write(self.settings_json_path(), settings).map_err(|err| {
Box::new(err) as Box<dyn Error>
})
}
}
fn replace_color_theme(settings_json: &str, new_theme: &str) -> String {
let theme_regex = Regex::new(r#"^(?P<prefix>\s*"workbench.colorTheme"\s*:\s*)"(?P<v>.+)"(?P<suffix>,?\s*//\s*thcon:replace-line)"#);
match theme_regex {
Err(_) => settings_json.to_owned(),
Ok(theme_regex) => {
let modified_lines: Vec<String> = settings_json.lines().map(|line| {
theme_regex.replace(line, |caps: &Captures| {
format!(r#"{}"{}"{}"#, &caps["prefix"], new_theme, &caps["suffix"])
}).into_owned()
}).collect();
modified_lines.join("\n")
}
}
}
#[test]
fn replace_color_trailing_comma() {
let settings_json = r#"
{
"workbench.colorTheme": "Default Dark+", // thcon:replace-line
"editor.minimap.enabled": false,
}
"#;
let res = replace_color_theme(settings_json, "Default Light+");
assert_eq!(
res,
r#"
{
"workbench.colorTheme": "Default Light+", // thcon:replace-line
"editor.minimap.enabled": false,
}
"#
);
}
#[test]
fn replace_color_no_trailing_comma() {
let settings_json = r#"
{
"editor.minimap.enabled": false,
"workbench.colorTheme" :"Default Dark+" // thcon:replace-line
}
"#;
let res = replace_color_theme(settings_json, "Default Light+");
assert_eq!(
res,
r#"
{
"editor.minimap.enabled": false,
"workbench.colorTheme" :"Default Light+" // thcon:replace-line
}
"#
);
}