ito-domain 0.1.27

//! Module domain models and repository.
//!
//! This module provides domain models for Ito modules and a repository
//! for loading and querying module data.

mod repository;

pub use repository::ModuleRepository;

use std::path::PathBuf;

/// Full module with metadata loaded.
#[derive(Debug, Clone)]
pub struct Module {
    /// Module identifier (e.g., "005")
    pub id: String,
    /// Module name (e.g., "dev-tooling")
    pub name: String,
    /// Optional description
    pub description: Option<String>,
    /// Path to the module directory
    pub path: PathBuf,
    /// Sub-modules belonging to this module; empty when none are defined.
    pub sub_modules: Vec<SubModule>,
}

/// Lightweight module summary for listings.
#[derive(Debug, Clone)]
pub struct ModuleSummary {
    /// Module identifier
    pub id: String,
    /// Module name
    pub name: String,
    /// Number of changes in this module
    pub change_count: u32,
    /// Sub-module summaries; empty when none are defined.
    pub sub_modules: Vec<SubModuleSummary>,
}

/// A sub-module that groups changes within a parent module.
///
/// Sub-modules allow a module to be divided into named sections, each with
/// their own change sequence. The canonical identifier is `NNN.SS` where
/// `NNN` is the parent module number and `SS` is the sub-module number.
#[derive(Debug, Clone)]
pub struct SubModule {
    /// Canonical sub-module identifier (e.g., "005.01")
    pub id: String,
    /// Parent module identifier (e.g., "005")
    pub parent_module_id: String,
    /// Sub-module number, zero-padded to 2 digits (e.g., "01")
    pub sub_id: String,
    /// Sub-module name (e.g., "core-api")
    pub name: String,
    /// Optional description
    pub description: Option<String>,
    /// Number of changes in this sub-module
    pub change_count: u32,
    /// Path to the sub-module directory
    pub path: PathBuf,
}

/// Lightweight sub-module summary for listings.
///
/// Included in [`ModuleSummary`] when sub-modules are present.
#[derive(Debug, Clone)]
pub struct SubModuleSummary {
    /// Canonical sub-module identifier (e.g., "005.01")
    pub id: String,
    /// Sub-module name
    pub name: String,
    /// Number of changes in this sub-module
    pub change_count: u32,
}

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

    #[test]
    fn test_module_creation() {
        let module = Module {
            id: "005".to_string(),
            name: "dev-tooling".to_string(),
            description: Some("Development tooling".to_string()),
            path: PathBuf::from("/test"),
            sub_modules: Vec::new(),
        };

        assert_eq!(module.id, "005");
        assert_eq!(module.name, "dev-tooling");
        assert!(module.sub_modules.is_empty());
    }

    #[test]
    fn test_module_summary() {
        let summary = ModuleSummary {
            id: "005".to_string(),
            name: "dev-tooling".to_string(),
            change_count: 3,
            sub_modules: Vec::new(),
        };

        assert_eq!(summary.change_count, 3);
        assert!(summary.sub_modules.is_empty());
    }

    #[test]
    fn test_sub_module_creation() {
        let sub = SubModule {
            id: "005.01".to_string(),
            parent_module_id: "005".to_string(),
            sub_id: "01".to_string(),
            name: "core-api".to_string(),
            description: Some("Core API sub-module".to_string()),
            change_count: 2,
            path: PathBuf::from("/test/005.01_core-api"),
        };

        assert_eq!(sub.id, "005.01");
        assert_eq!(sub.parent_module_id, "005");
        assert_eq!(sub.sub_id, "01");
        assert_eq!(sub.name, "core-api");
        assert_eq!(sub.change_count, 2);
    }

    #[test]
    fn test_sub_module_summary_creation() {
        let summary = SubModuleSummary {
            id: "005.01".to_string(),
            name: "core-api".to_string(),
            change_count: 2,
        };

        assert_eq!(summary.id, "005.01");
        assert_eq!(summary.name, "core-api");
        assert_eq!(summary.change_count, 2);
    }

    #[test]
    fn test_module_with_sub_modules() {
        let sub = SubModule {
            id: "005.01".to_string(),
            parent_module_id: "005".to_string(),
            sub_id: "01".to_string(),
            name: "core-api".to_string(),
            description: None,
            change_count: 1,
            path: PathBuf::from("/test/005.01_core-api"),
        };

        let module = Module {
            id: "005".to_string(),
            name: "dev-tooling".to_string(),
            description: None,
            path: PathBuf::from("/test"),
            sub_modules: vec![sub],
        };

        assert_eq!(module.sub_modules.len(), 1);
        assert_eq!(module.sub_modules[0].id, "005.01");
    }

    #[test]
    fn test_module_summary_with_sub_modules() {
        let sub_summary = SubModuleSummary {
            id: "005.01".to_string(),
            name: "core-api".to_string(),
            change_count: 2,
        };

        let summary = ModuleSummary {
            id: "005".to_string(),
            name: "dev-tooling".to_string(),
            change_count: 5,
            sub_modules: vec![sub_summary],
        };

        assert_eq!(summary.sub_modules.len(), 1);
        assert_eq!(summary.sub_modules[0].change_count, 2);
    }
}