taler-rust

GNU Taler code in Rust. Largely core banking integrations.
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cyclos-codegen.rs (2822B)

      1 /*
      2   This file is part of TALER
      3   Copyright (C) 2025, 2026 Taler Systems SA
      4 
      5   TALER is free software; you can redistribute it and/or modify it under the
      6   terms of the GNU Affero General Public License as published by the Free Software
      7   Foundation; either version 3, or (at your option) any later version.
      8 
      9   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
     10   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
     11   A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details.
     12 
     13   You should have received a copy of the GNU Affero General Public License along with
     14   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
     15 */
     16 
     17 use std::io::{Write, stdout};
     18 
     19 use clap::Parser;
     20 use http_client::builder::Req;
     21 use hyper::Method;
     22 use taler_build::long_version;
     23 use url::Url;
     24 
     25 /// Cyclos API schema codegen
     26 #[derive(clap::Parser, Debug)]
     27 #[command(long_version = long_version(), about, long_about = None)]
     28 struct Args {
     29     kind: Kind,
     30     ty: String,
     31 }
     32 
     33 #[derive(Debug, Clone, Copy, clap::ValueEnum)]
     34 enum Kind {
     35     Error,
     36     Enum,
     37 }
     38 
     39 #[tokio::main]
     40 async fn main() -> anyhow::Result<()> {
     41     let args = Args::parse();
     42     let client = http_client::client()?;
     43     let api: serde_json::Value = Req::new(
     44         &client,
     45         Method::GET,
     46         &Url::parse("https://demo.cyclos.org/api/").unwrap(),
     47         "openapi.json",
     48     )
     49     .send()
     50     .await
     51     .unwrap()
     52     .1
     53     .json()
     54     .await?;
     55     let schemas = &api["components"]["schemas"];
     56 
     57     let out = &mut stdout().lock();
     58     let ty = &schemas[&args.ty];
     59     let lines: Vec<_> = ty["description"].as_str().unwrap().lines().collect();
     60 
     61     match args.kind {
     62         Kind::Error => writeln!(
     63             out,
     64             "#[derive(Debug, serde::Deserialize, thiserror::Error)]"
     65         )?,
     66         Kind::Enum => writeln!(out, "#[derive(Debug, serde::Deserialize)]")?,
     67     }
     68     writeln!(out, "#[serde(rename_all = \"camelCase\")]")?;
     69     writeln!(out, "/// {}", lines[0])?;
     70     writeln!(out, "pub enum {} {{", args.ty)?;
     71     for (i, l) in lines[2..].iter().enumerate() {
     72         let name = ty["enum"][i].as_str().unwrap();
     73         let mut split = l.split("`").skip(1);
     74         let code = split.next().unwrap();
     75         let msg = split
     76             .next()
     77             .unwrap()
     78             .strip_prefix(": ")
     79             .unwrap()
     80             .trim_end_matches('.');
     81         assert_eq!(name, code);
     82         match args.kind {
     83             Kind::Error => writeln!(out, "    #[error(\"{name} - {msg}\")]")?,
     84             Kind::Enum => writeln!(out, "    /// {msg}")?,
     85         }
     86         writeln!(
     87             out,
     88             "    {}{},",
     89             name.chars().next().unwrap().to_uppercase(),
     90             &name[1..]
     91         )?;
     92     }
     93     writeln!(out, "}}")?;
     94 
     95     Ok(())
     96 }