systemprompt-config 0.10.1

//! `JsonSchema`-driven validation helpers for runtime config parsing.

use std::path::Path;

use schemars::JsonSchema;
use serde::de::DeserializeOwned;
use thiserror::Error;

#[derive(Debug, Error)]
#[non_exhaustive]
pub enum ConfigValidationError {
    #[error("Failed to read config file: {0}")]
    Read(#[from] std::io::Error),

    #[error("Failed to parse YAML config: {0}")]
    Parse(#[from] serde_yaml::Error),

    #[error("Schema validation failed: {0}")]
    Schema(String),
}

pub fn validate_config<T: DeserializeOwned + JsonSchema>(
    yaml_path: impl AsRef<Path>,
) -> Result<T, ConfigValidationError> {
    let content = std::fs::read_to_string(yaml_path)?;
    let config: T = serde_yaml::from_str(&content)?;
    Ok(config)
}

pub fn generate_schema<T: JsonSchema>() -> Result<serde_json::Value, serde_json::Error> {
    let schema = schemars::schema_for!(T);
    serde_json::to_value(schema)
}

pub fn validate_yaml_str<T: DeserializeOwned>(yaml: &str) -> Result<T, ConfigValidationError> {
    let config: T = serde_yaml::from_str(yaml)?;
    Ok(config)
}

pub fn validate_yaml_file(
    path: impl AsRef<Path>,
) -> Result<serde_yaml::Value, ConfigValidationError> {
    let content = std::fs::read_to_string(path)?;
    let value: serde_yaml::Value = serde_yaml::from_str(&content)?;
    Ok(value)
}