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use std::cell::RefCell;
use anyhow::{anyhow, Result};
use gag::Gag;
use promkit::{
crossterm::{
event::Event,
style::{Attribute, Attributes, Color},
},
json::{self, JsonBundle, JsonNode, JsonPathSegment},
keymap::KeymapManager,
listbox, serde_json,
snapshot::Snapshot,
style::StyleBuilder,
suggest::Suggest,
text, text_editor, Prompt, PromptSignal, Renderer,
};
mod keymap;
mod render;
mod trie;
use trie::QueryTrie;
pub struct Jnv {
input_json: String,
expand_depth: Option<usize>,
no_hint: bool,
query_editor_renderer: text_editor::Renderer,
hint_message_renderer: text::Renderer,
suggest: Suggest,
suggest_renderer: listbox::Renderer,
json_bundle_renderer: json::bundle::Renderer,
keymap: KeymapManager<self::render::Renderer>,
}
impl Jnv {
pub fn try_new(
input_json: String,
expand_depth: Option<usize>,
no_hint: bool,
edit_mode: text_editor::Mode,
indent: usize,
suggestion_list_length: usize,
) -> Result<Self> {
let kinds = JsonNode::try_new(input_json.clone(), None)?.flatten_visibles();
let full = kinds.iter().filter_map(|kind| kind.path()).map(|segments| {
if segments.is_empty() {
".".to_string()
} else {
segments
.iter()
.map(|segment| match segment {
JsonPathSegment::Key(key) => {
if key.contains('.') || key.contains('-') {
format!(".\"{}\"", key)
} else {
format!(".{}", key)
}
}
JsonPathSegment::Index(index) => format!("[{}]", index),
})
.collect::<String>()
}
});
Ok(Self {
input_json: input_json.clone(),
expand_depth,
no_hint,
query_editor_renderer: text_editor::Renderer {
texteditor: Default::default(),
history: Default::default(),
prefix: String::from("❯❯ "),
mask: Default::default(),
prefix_style: StyleBuilder::new().fgc(Color::DarkCyan).build(),
active_char_style: StyleBuilder::new().bgc(Color::DarkMagenta).build(),
inactive_char_style: StyleBuilder::new().build(),
edit_mode,
lines: Default::default(),
},
hint_message_renderer: text::Renderer {
text: Default::default(),
style: StyleBuilder::new()
.fgc(Color::DarkGreen)
.attrs(Attributes::from(Attribute::Bold))
.build(),
},
suggest: Suggest::from_iter(full),
suggest_renderer: listbox::Renderer {
listbox: listbox::Listbox::from_iter(Vec::<String>::new()),
cursor: String::from("❯ "),
active_item_style: StyleBuilder::new()
.fgc(Color::DarkGrey)
.bgc(Color::DarkYellow)
.build(),
inactive_item_style: StyleBuilder::new().fgc(Color::DarkGrey).build(),
lines: Some(suggestion_list_length),
},
keymap: KeymapManager::new("default", self::keymap::default)
.register("on_suggest", self::keymap::on_suggest),
json_bundle_renderer: json::bundle::Renderer {
bundle: json::JsonBundle::new([JsonNode::try_new(
j9::run(".", &input_json)
.map_err(|_| {
anyhow!(format!(
"jq error with program: '.', input: {}",
&input_json
))
})?
.first()
.map(|s| s.as_str())
.ok_or_else(|| anyhow!("No data found"))?,
expand_depth,
)?]),
theme: json::Theme {
curly_brackets_style: StyleBuilder::new()
.attrs(Attributes::from(Attribute::Bold))
.build(),
square_brackets_style: StyleBuilder::new()
.attrs(Attributes::from(Attribute::Bold))
.build(),
key_style: StyleBuilder::new().fgc(Color::DarkBlue).build(),
string_value_style: StyleBuilder::new().fgc(Color::DarkGreen).build(),
number_value_style: StyleBuilder::new().build(),
boolean_value_style: StyleBuilder::new().build(),
null_value_style: StyleBuilder::new().fgc(Color::DarkGrey).build(),
active_item_attribute: Attribute::Bold,
inactive_item_attribute: Attribute::Dim,
lines: Default::default(),
indent,
},
},
})
}
pub fn prompt(self) -> Result<Prompt<String>> {
let trie = RefCell::new(QueryTrie::default());
Ok(Prompt::try_new(
Box::new(self::render::Renderer {
keymap: self.keymap,
query_editor_snapshot: Snapshot::<text_editor::Renderer>::new(
self.query_editor_renderer,
),
hint_message_snapshot: Snapshot::<text::Renderer>::new(self.hint_message_renderer),
suggest: self.suggest,
suggest_snapshot: Snapshot::<listbox::Renderer>::new(self.suggest_renderer),
json_bundle_snapshot: Snapshot::<json::bundle::Renderer>::new(
self.json_bundle_renderer,
),
}),
Box::new(
move |event: &Event,
renderer: &mut Box<dyn Renderer + 'static>|
-> promkit::Result<PromptSignal> {
let renderer = self::render::Renderer::cast_mut(renderer.as_mut())?;
let signal = match renderer.keymap.get() {
Some(f) => f(event, renderer),
None => Ok(PromptSignal::Quit),
}?;
let completed = renderer
.query_editor_snapshot
.after()
.texteditor
.text_without_cursor()
.to_string();
if completed
!= renderer
.query_editor_snapshot
.borrow_before()
.texteditor
.text_without_cursor()
.to_string()
{
renderer.hint_message_snapshot.reset_after_to_init();
// libjq writes to the console when an internal error occurs.
//
// e.g.
// ```
// let _ = j9::run(". | select(.number == invalid_no_quote)", "{}");
// jq: error: invalid_no_quote/0 is not defined at <top-level>, line 1:
// . | select(.number == invalid_no_quote)
// ```
//
// While errors themselves are not an issue,
// they interfere with the console output handling mechanism
// in promkit and qjq (e.g., causing line numbers to shift).
// Therefore, we'll ignore console output produced inside j9::run.
//
// It's possible that this could be handled
// within github.com/ynqa/j9, but for now,
// we'll proceed with this workaround.
//
// For reference, the functionality of a quiet mode in libjq is
// also being discussed at https://github.com/jqlang/jq/issues/1225.
let ignore_err = Gag::stderr().unwrap();
let ret = j9::run(&completed, &self.input_json);
drop(ignore_err);
ret
.map(|ret| {
if ret.is_empty() {
if !self.no_hint {
renderer.hint_message_snapshot.after_mut().replace(text::Renderer {
text: format!("JSON query ('{}') was executed, but no results were returned.", &completed),
style: StyleBuilder::new()
.fgc(Color::DarkRed)
.attrs(Attributes::from(Attribute::Bold))
.build(),
});
}
if let Some(searched) = trie.borrow().prefix_search_value(&completed) {
renderer.json_bundle_snapshot.after_mut().bundle = JsonBundle::new(searched.clone());
}
} else {
ret.iter().map(|string| {
JsonNode::try_new(string.as_str(), self.expand_depth)
}).collect::<Result<Vec<JsonNode>, _>>()
.map(|nodes| {
if nodes.len() == 1 && nodes.first().unwrap() == &JsonNode::Leaf(serde_json::Value::Null) {
if !self.no_hint {
renderer.hint_message_snapshot.after_mut().replace(text::Renderer {
text: format!(
"JSON query resulted in 'null', which may indicate a typo or incorrect query: '{}'",
&completed,
),
style: StyleBuilder::new()
.fgc(Color::DarkYellow)
.attrs(Attributes::from(Attribute::Bold))
.build(),
});
}
if let Some(searched) = trie.borrow().prefix_search_value(&completed) {
renderer.json_bundle_snapshot.after_mut().bundle = JsonBundle::new(searched.clone());
}
} else {
// SUCCESS!
trie.borrow_mut().insert(&completed, nodes.clone());
renderer.json_bundle_snapshot.after_mut().bundle = JsonBundle::new(nodes);
}
})
.unwrap_or_else(|e| {
if !self.no_hint {
renderer.hint_message_snapshot.after_mut().replace(text::Renderer{
text: format!(
"Failed to parse query result for viewing: {}",
e
),
style: StyleBuilder::new()
.fgc(Color::DarkRed)
.attrs(Attributes::from(Attribute::Bold))
.build(),
})
}
if let Some(searched) = trie.borrow().prefix_search_value(&completed) {
renderer.json_bundle_snapshot.after_mut().bundle = JsonBundle::new(searched.clone());
}
});
}
})
.unwrap_or_else(|_| {
if !self.no_hint {
renderer.hint_message_snapshot.after_mut().replace(text::Renderer {
text: format!("Failed to execute jq query '{}'", &completed),
style: StyleBuilder::new()
.fgc(Color::DarkRed)
.attrs(Attributes::from(Attribute::Bold))
.build(),
},
);
}
if let Some(searched) = trie.borrow().prefix_search_value(&completed) {
renderer.json_bundle_snapshot.after_mut().bundle = JsonBundle::new(searched.clone());
}
});
}
Ok(signal)
},
),
|renderer: &(dyn Renderer + '_)| -> promkit::Result<String> {
Ok(self::render::Renderer::cast(renderer)?
.query_editor_snapshot
.after()
.texteditor
.text_without_cursor()
.to_string())
},
)?)
}
}