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|
#![warn(rust_2018_idioms)]
use github_rs::client::{Executor, Github};
use regex::Regex;
use serde::Deserialize;
use serde_json::Value;
use thiserror::Error;
#[derive(Debug, Error)]
pub enum Error {
#[error("GitHub client error: {0}")]
Github(String),
#[error("Unable to deserialize")]
Deserialize(#[from] serde_json::error::Error),
}
pub struct Client<'a> {
client: Github,
owner: &'a str,
repo: &'a str,
}
impl<'a> Client<'a> {
pub fn new(token: &str, owner: &'a str, repo: &'a str) -> Self {
let client = Github::new(&token).unwrap();
Client { client, owner, repo }
}
pub fn fetch(&self, id: &str) -> Result<Suggestion, Error> {
let response = self.client
.get()
.repos()
.owner(self.owner)
.repo(self.repo)
.pulls()
.comments()
.id(id)
.execute::<Value>();
match response {
Ok((_, _, Some(json))) => {
let suggestion = serde_json::from_value(json)?;
Ok(suggestion)
},
Ok((_, _, None)) => Err(Error::Github("no response".to_owned())),
Err(e) => Err(Error::Github(e.to_string())),
}
}
}
#[derive(Debug, Deserialize)]
pub struct Suggestion {
#[serde(rename = "diff_hunk")]
diff: String,
#[serde(rename = "body")]
suggestion: String,
}
impl Suggestion {
pub fn patch(&self) -> String {
let mut diff: Vec<_> = self.diff.lines()
.filter(|l| !l.starts_with("-"))
.map(|l| {
if l.starts_with("+") {
return l.replacen("+", " ", 1);
}
l.to_owned()
})
.collect();
let last = diff.len() - 1;
diff[last] = diff.last().unwrap()
.replacen(" ", "-", 1);
diff.push(self.suggestion());
diff.join("\n")
}
fn suggestion(&self) -> String {
let re = Regex::new(r"(?s).*(?-s)```\s*suggestion.*\n").unwrap();
let s = re.replace(&self.suggestion, "+");
s.replace("```", "")
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn suggestion_fetch_gets_pull_request_comment() {
let client = Client::new(
env!("GITHUB_TOKEN"),
"cli",
"cli",
);
let suggestion = client.fetch("438947607").unwrap();
println!("{:?}", suggestion);
}
#[test]
fn suggestion_patch_generates_patch() {
// Diff from gabgodBB (https://github.com/gabgodBB) and suggestion from
// probablycorey (https://github.com/probablycorey) in this pull
// request: https://github.com/cli/cli/pull/1123
let suggestion = Suggestion {
diff: r#"@@ -1, 9 +1, 11 @@
package command
import (
+ "bufio" // used to input comment
"errors"
"fmt"
"io"
+ "os" // used to input comment"#.to_owned(),
suggestion: r#"It's ok to leave these uncommented
```suggestion
"os"
```"#.to_owned(),
};
assert_eq!(
suggestion.patch(),
r#"@@ -1, 9 +1, 11 @@
package command
import (
"bufio" // used to input comment
"errors"
"fmt"
"io"
- "os" // used to input comment
+ "os"
"#,
);
}
}
|
