|
| 1 | +use super::{Context, Module, ModuleConfig}; |
| 2 | +use serde_json as json; |
| 3 | + |
| 4 | +use crate::configs::nats::NatsConfig; |
| 5 | +use crate::formatter::StringFormatter; |
| 6 | + |
| 7 | +pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> { |
| 8 | + let mut module = context.new_module("nats"); |
| 9 | + let config = NatsConfig::try_load(module.config); |
| 10 | + |
| 11 | + if config.disabled { |
| 12 | + return None; |
| 13 | + }; |
| 14 | + |
| 15 | + let ctx_str = context |
| 16 | + .exec_cmd("nats", &["context", "info", "--json"])? |
| 17 | + .stdout; |
| 18 | + let nats_context: json::Value = json::from_str(&ctx_str) |
| 19 | + .map_err(|e| { |
| 20 | + log::warn!("Error parsing nats context JSON: {}\n", e); |
| 21 | + drop(e); |
| 22 | + }) |
| 23 | + .ok()?; |
| 24 | + |
| 25 | + let parsed = StringFormatter::new(config.format).and_then(|formatter| { |
| 26 | + formatter |
| 27 | + .map_meta(|var, _| match var { |
| 28 | + "symbol" => Some(config.symbol), |
| 29 | + _ => None, |
| 30 | + }) |
| 31 | + .map_style(|variable| match variable { |
| 32 | + "style" => Some(Ok(config.style)), |
| 33 | + _ => None, |
| 34 | + }) |
| 35 | + .map(|variable| match variable { |
| 36 | + "name" => Some(Ok(nats_context.get("name")?.as_str()?)), |
| 37 | + _ => None, |
| 38 | + }) |
| 39 | + .parse(None, Some(context)) |
| 40 | + }); |
| 41 | + |
| 42 | + module.set_segments(match parsed { |
| 43 | + Ok(segments) => segments, |
| 44 | + Err(error) => { |
| 45 | + log::warn!("Error in module `nats`:\n{}", error); |
| 46 | + return None; |
| 47 | + } |
| 48 | + }); |
| 49 | + |
| 50 | + Some(module) |
| 51 | +} |
| 52 | + |
| 53 | +#[cfg(test)] |
| 54 | +mod tests { |
| 55 | + use nu_ansi_term::Color; |
| 56 | + use std::io; |
| 57 | + |
| 58 | + use crate::test::ModuleRenderer; |
| 59 | + |
| 60 | + #[test] |
| 61 | + fn show_context() -> io::Result<()> { |
| 62 | + let actual = ModuleRenderer::new("nats") |
| 63 | + .config(toml::toml! { |
| 64 | + [nats] |
| 65 | + format = "[$symbol$name](bold purple)" |
| 66 | + symbol = "" |
| 67 | + disabled = false |
| 68 | + }) |
| 69 | + .collect(); |
| 70 | + let expected = Some(format!("{}", Color::Purple.bold().paint("localhost"))); |
| 71 | + assert_eq!(expected, actual); |
| 72 | + Ok(()) |
| 73 | + } |
| 74 | + |
| 75 | + #[test] |
| 76 | + fn test_with_symbol() -> io::Result<()> { |
| 77 | + let actual = ModuleRenderer::new("nats") |
| 78 | + .config(toml::toml! { |
| 79 | + [nats] |
| 80 | + format = "[$symbol$name](bold red)" |
| 81 | + symbol = "✉️ " |
| 82 | + disabled = false |
| 83 | + }) |
| 84 | + .collect(); |
| 85 | + let expected = Some(format!("{}", Color::Red.bold().paint("✉️ localhost"))); |
| 86 | + assert_eq!(expected, actual); |
| 87 | + Ok(()) |
| 88 | + } |
| 89 | +} |
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