turbocommit 0.15.2

A CLI tool to create commit messages with OpenAI GPT models
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use std::str::FromStr;
use serde::{Serialize, Deserialize};

#[derive(Debug, Copy, Clone, Default, PartialEq)]
pub enum Model {
    {% for model in models %}
    {% if model.codename == default_model_codename %}
    #[default]
    {% endif %}
    {{ model.enumname }},
    {% endfor %}
}

impl FromStr for Model {
    type Err = String;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s {
            {% for model in models %}
            "{{ model.codename }}" => Ok(Self::{{ model.enumname }}),
            {% endfor %}
            _ => Err(format!("{} is not a valid model", s)),
        }
    }
}


impl ToString for Model {
    fn to_string(&self) -> String {
        match self {
            {% for model in models %}
            Self::{{ model.enumname }} { .. } => String::from("{{ model.codename }}"),
            {% endfor %}
        }
    }
}

impl Serialize for Model {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: serde::Serializer,
    {
        serializer.serialize_str(&self.to_string())
    }
}

impl<'de> Deserialize<'de> for Model {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: serde::Deserializer<'de>,
    {
        let s = String::deserialize(deserializer)?;
        Self::from_str(&s).map_err(serde::de::Error::custom)
    }
}

impl Model {
    pub fn all() -> Vec<Self> {
        vec![
            {% for model in models %}
            Self::{{ model.enumname }},
            {% endfor %}
        ]
    }

    pub fn cost(&self, prompt_tokens: usize, completion_tokens: usize) -> f64 {
        let (prompt_cost, completion_cost) = match self {
            {% for model in models %}
            Self::{{ model.enumname }} => ({{ model.prompt_cost }}, {{ model.completion_cost }}),
            {% endfor %}
        };
        (prompt_tokens as f64).mul_add(
            prompt_cost / 1000.0,
            (completion_tokens as f64) * (completion_cost / 1000.0),
        )
    }

    pub const fn context_size(&self) -> usize {
        match self {
            {% for model in models %}
            Self::{{ model.enumname }} => {{ model.context_size }},
            {% endfor %}
        }
    }
}