rho-coding-agent 0.21.0

A lightweight agent harness inspired by Pi
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164

use crate::model::catalog::ModelCatalogEntry;

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct FavoriteModel {
    pub provider: String,
    pub model: String,
}

impl FavoriteModel {
    pub fn new(provider: impl Into<String>, model: impl Into<String>) -> Self {
        Self {
            provider: provider.into(),
            model: model.into(),
        }
    }

    pub fn value(&self) -> String {
        format!("{}/{}", self.provider, self.model)
    }

    pub fn matches(&self, provider: &str, model: &str) -> bool {
        self.provider == provider && self.model == model
    }
}

pub fn normalized_favorite_models(favorites: &[String]) -> Vec<FavoriteModel> {
    let mut normalized = Vec::new();
    for favorite in favorites {
        let Some(favorite) = parse_favorite_model(favorite) else {
            continue;
        };
        if !normalized
            .iter()
            .any(|existing: &FavoriteModel| existing.matches(&favorite.provider, &favorite.model))
        {
            normalized.push(favorite);
        }
    }
    normalized
}

pub fn favorite_model_values(favorites: &[FavoriteModel]) -> Vec<String> {
    favorites.iter().map(FavoriteModel::value).collect()
}

pub fn reorder_models_by_favorites(
    models: Vec<ModelCatalogEntry>,
    favorites: &[FavoriteModel],
) -> Vec<ModelCatalogEntry> {
    let mut remaining = models;
    let mut ordered = Vec::with_capacity(remaining.len());

    for favorite in favorites {
        if let Some(index) = remaining
            .iter()
            .position(|entry| favorite.matches(&entry.provider, &entry.model))
        {
            ordered.push(remaining.remove(index));
        }
    }

    ordered.extend(remaining);
    ordered
}

pub fn toggle_favorite(favorites: &mut Vec<String>, provider: &str, model: &str) -> bool {
    let mut normalized = normalized_favorite_models(favorites);
    if let Some(index) = normalized
        .iter()
        .position(|favorite| favorite.matches(provider, model))
    {
        normalized.remove(index);
        *favorites = favorite_model_values(&normalized);
        false
    } else {
        normalized.push(FavoriteModel::new(provider, model));
        *favorites = favorite_model_values(&normalized);
        true
    }
}

pub fn favorite_model_from_value(value: &str) -> Option<FavoriteModel> {
    parse_favorite_model(value)
}

fn parse_favorite_model(value: &str) -> Option<FavoriteModel> {
    let value = value.trim();
    let (provider, model) = value.split_once('/')?;
    let provider = provider.trim();
    let model = model.trim();
    (!provider.is_empty() && !model.is_empty())
        .then(|| FavoriteModel::new(provider.to_string(), model.to_string()))
}

#[cfg(test)]
mod tests {
    use super::*;

    fn entry(provider: &str, model: &str) -> ModelCatalogEntry {
        ModelCatalogEntry {
            provider: provider.into(),
            model: model.into(),
            display_name: model.into(),
            auth_modes: vec!["auth".into()],
        }
    }

    #[test]
    fn normalizes_favorites() {
        let favorites = vec![
            " openai/gpt-5.5 ".into(),
            "missing-separator".into(),
            "openai/gpt-5.5".into(),
            "anthropic/claude".into(),
        ];

        assert_eq!(
            normalized_favorite_models(&favorites),
            vec![
                FavoriteModel::new("openai", "gpt-5.5"),
                FavoriteModel::new("anthropic", "claude"),
            ]
        );
    }

    #[test]
    fn reorders_available_models_by_favorites() {
        let models = vec![
            entry("anthropic", "claude"),
            entry("openai", "gpt-5.5"),
            entry("github-copilot", "gpt-4.1"),
        ];
        let favorites = normalized_favorite_models(&[
            "openai/gpt-5.5".into(),
            "unavailable/model".into(),
            "anthropic/claude".into(),
        ]);

        let ordered = reorder_models_by_favorites(models, &favorites);

        assert_eq!(
            ordered
                .iter()
                .map(|entry| format!("{}/{}", entry.provider, entry.model))
                .collect::<Vec<_>>(),
            vec![
                "openai/gpt-5.5",
                "anthropic/claude",
                "github-copilot/gpt-4.1",
            ]
        );
    }

    #[test]
    fn toggles_favorites() {
        let mut favorites = vec!["openai/gpt-5.5".into()];

        assert!(!toggle_favorite(&mut favorites, "openai", "gpt-5.5"));
        assert!(favorites.is_empty());

        assert!(toggle_favorite(&mut favorites, "anthropic", "claude"));
        assert_eq!(favorites, vec!["anthropic/claude"]);
    }
}