enact-core 0.0.2

//! Role Profiles - Capability-based role definitions
//!
//! Implements role presets inspired by Antfarm:
//! - analysis: Explores and plans
//! - coding: Implements and tests
//! - verification: Validates work quality
//! - testing: Integration and E2E testing
//! - pr: Pull request management
//! - scanning: Security and compliance

use serde::{Deserialize, Serialize};
use std::collections::HashSet;
use std::str::FromStr;

/// Role capability (what the role CAN do)
#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum Capability {
    /// Read source code
    ReadCode,
    /// Write source code
    WriteSource,
    /// Explore project structure
    ExploreStructure,
    /// Execute shell commands
    ExecuteShell,
    /// Execute tests
    ExecuteTests,
    /// Git operations
    WriteGit,
    /// Read pull requests
    ReadPr,
    /// Write PR reviews
    WriteReview,
    /// Merge PRs
    MergePr,
    /// Use external tools
    UseTools,
    /// Use browser for visual testing
    UseBrowser,
}

impl FromStr for Capability {
    type Err = ();

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        Self::parse(s).ok_or(())
    }
}

impl Capability {
    /// Parse capability from string
    pub fn parse(s: &str) -> Option<Self> {
        match s {
            "read:code" => Some(Capability::ReadCode),
            "write:source" => Some(Capability::WriteSource),
            "explore:structure" => Some(Capability::ExploreStructure),
            "execute:shell" => Some(Capability::ExecuteShell),
            "execute:tests" => Some(Capability::ExecuteTests),
            "write:git" => Some(Capability::WriteGit),
            "read:pr" => Some(Capability::ReadPr),
            "write:review" => Some(Capability::WriteReview),
            "merge:pr" => Some(Capability::MergePr),
            "use:tools" => Some(Capability::UseTools),
            "use:browser" => Some(Capability::UseBrowser),
            _ => None,
        }
    }

    /// Convert to string representation
    pub fn as_str(&self) -> &'static str {
        match self {
            Capability::ReadCode => "read:code",
            Capability::WriteSource => "write:source",
            Capability::ExploreStructure => "explore:structure",
            Capability::ExecuteShell => "execute:shell",
            Capability::ExecuteTests => "execute:tests",
            Capability::WriteGit => "write:git",
            Capability::ReadPr => "read:pr",
            Capability::WriteReview => "write:review",
            Capability::MergePr => "merge:pr",
            Capability::UseTools => "use:tools",
            Capability::UseBrowser => "use:browser",
        }
    }
}

/// Role restriction (what the role CANNOT do)
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Restriction {
    /// Type of restriction
    #[serde(rename = "type")]
    pub restriction_type: RestrictionType,
    /// Action being restricted
    pub action: String,
}

/// Restriction types
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum RestrictionType {
    /// Explicitly deny this action
    Deny,
    /// Require approval for this action
    RequireApproval,
    /// Log this action for audit
    Audit,
}

/// Predefined role profiles
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "lowercase")]
pub enum RoleProfile {
    /// Analysis and planning
    Analysis,
    /// Coding and implementation
    Coding,
    /// Verification and validation
    Verification,
    /// Testing (integration and E2E)
    Testing,
    /// PR management
    Pr,
    /// Security scanning
    Scanning,
}

impl RoleProfile {
    /// Get the default capabilities for this role
    pub fn default_capabilities(&self) -> HashSet<Capability> {
        let mut caps = HashSet::new();

        match self {
            RoleProfile::Analysis => {
                caps.insert(Capability::ReadCode);
                caps.insert(Capability::ExploreStructure);
                caps.insert(Capability::ReadPr);
            }
            RoleProfile::Coding => {
                caps.insert(Capability::ReadCode);
                caps.insert(Capability::WriteSource);
                caps.insert(Capability::ExecuteShell);
                caps.insert(Capability::ExecuteTests);
                caps.insert(Capability::WriteGit);
                caps.insert(Capability::UseTools);
            }
            RoleProfile::Verification => {
                caps.insert(Capability::ReadCode);
                caps.insert(Capability::ExecuteTests);
                caps.insert(Capability::ReadPr);
                caps.insert(Capability::WriteReview);
            }
            RoleProfile::Testing => {
                caps.insert(Capability::ReadCode);
                caps.insert(Capability::ExecuteTests);
                caps.insert(Capability::UseBrowser);
                caps.insert(Capability::ExecuteShell);
            }
            RoleProfile::Pr => {
                caps.insert(Capability::ReadCode);
                caps.insert(Capability::ReadPr);
                caps.insert(Capability::WriteReview);
                caps.insert(Capability::WriteGit);
            }
            RoleProfile::Scanning => {
                caps.insert(Capability::ReadCode);
                caps.insert(Capability::ExecuteShell);
                caps.insert(Capability::ExploreStructure);
            }
        }

        caps
    }

    /// Get default restrictions for this role
    pub fn default_restrictions(&self) -> Vec<Restriction> {
        match self {
            RoleProfile::Analysis => vec![
                Restriction {
                    restriction_type: RestrictionType::Deny,
                    action: "write:source".to_string(),
                },
                Restriction {
                    restriction_type: RestrictionType::Deny,
                    action: "execute:shell".to_string(),
                },
            ],
            RoleProfile::Coding => vec![],
            RoleProfile::Verification => vec![
                Restriction {
                    restriction_type: RestrictionType::Deny,
                    action: "write:source".to_string(),
                },
                Restriction {
                    restriction_type: RestrictionType::Deny,
                    action: "write:git".to_string(),
                },
            ],
            RoleProfile::Testing => vec![Restriction {
                restriction_type: RestrictionType::Deny,
                action: "write:source".to_string(),
            }],
            RoleProfile::Pr => vec![
                Restriction {
                    restriction_type: RestrictionType::Deny,
                    action: "write:source".to_string(),
                },
                Restriction {
                    restriction_type: RestrictionType::Deny,
                    action: "merge:pr".to_string(),
                },
            ],
            RoleProfile::Scanning => vec![Restriction {
                restriction_type: RestrictionType::Deny,
                action: "write:source".to_string(),
            }],
        }
    }

    /// Get recommended model profile for this role
    pub fn recommended_model_profile(&self) -> &'static str {
        match self {
            RoleProfile::Analysis => "balanced",
            RoleProfile::Coding => "quality",
            RoleProfile::Verification => "deterministic",
            RoleProfile::Testing => "balanced",
            RoleProfile::Pr => "balanced",
            RoleProfile::Scanning => "deterministic",
        }
    }

    /// Get description of this role
    pub fn description(&self) -> &'static str {
        match self {
            RoleProfile::Analysis => "Explores codebase, analyzes requirements, and creates plans",
            RoleProfile::Coding => "Implements features, writes tests, and manages code",
            RoleProfile::Verification => "Validates implementation quality and correctness",
            RoleProfile::Testing => "Performs integration and end-to-end testing",
            RoleProfile::Pr => "Manages pull requests and code reviews",
            RoleProfile::Scanning => "Performs security and compliance scans",
        }
    }
}

/// Role definition in a workflow
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RoleDefinition {
    /// Role identifier
    pub id: String,
    /// Display name
    pub name: String,
    /// Base profile
    #[serde(default)]
    pub profile: Option<RoleProfile>,
    /// Description
    pub description: Option<String>,
    /// Workspace configuration
    #[serde(default)]
    pub workspace: Option<WorkspaceConfig>,
    /// Explicit capabilities (overrides profile)
    #[serde(default)]
    pub capabilities: Vec<String>,
    /// Explicit restrictions (overrides profile)
    #[serde(default)]
    pub restrictions: Vec<Restriction>,
    /// Model configuration
    #[serde(default)]
    pub model: Option<ModelConfig>,
}

impl RoleDefinition {
    /// Get effective capabilities (profile + overrides)
    pub fn effective_capabilities(&self) -> HashSet<Capability> {
        let mut caps = if let Some(profile) = self.profile {
            profile.default_capabilities()
        } else {
            HashSet::new()
        };

        // Add explicit capabilities
        for cap_str in &self.capabilities {
            if let Ok(cap) = cap_str.parse::<Capability>() {
                caps.insert(cap);
            }
        }

        caps
    }

    /// Get effective restrictions (profile + overrides)
    pub fn effective_restrictions(&self) -> Vec<Restriction> {
        let mut restrictions = if let Some(profile) = self.profile {
            profile.default_restrictions()
        } else {
            vec![]
        };

        // Add explicit restrictions
        restrictions.extend(self.restrictions.clone());

        restrictions
    }

    /// Check if role has a capability
    pub fn has_capability(&self, cap: &Capability) -> bool {
        self.effective_capabilities().contains(cap)
    }

    /// Check if role is restricted from an action
    pub fn is_restricted(&self, action: &str) -> bool {
        self.effective_restrictions()
            .iter()
            .any(|r| r.action == action)
    }
}

/// Workspace configuration for a role
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct WorkspaceConfig {
    /// Base directory for agent files
    pub base_dir: String,
    /// Files to include in workspace
    #[serde(default)]
    pub files: Vec<String>,
    /// Skills available to this role
    #[serde(default)]
    pub skills: Vec<String>,
}

/// Model configuration for a role
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ModelConfig {
    /// Model identifier
    pub model: Option<String>,
    /// Routing profile
    #[serde(default)]
    pub profile: Option<String>,
    /// Maximum tokens
    #[serde(default)]
    pub max_tokens: Option<usize>,
    /// Temperature
    #[serde(default)]
    pub temperature: Option<f32>,
}

/// Role registry for managing role definitions
pub struct RoleRegistry {
    roles: std::collections::HashMap<String, RoleDefinition>,
}

impl RoleRegistry {
    /// Create a new empty registry
    pub fn new() -> Self {
        Self {
            roles: std::collections::HashMap::new(),
        }
    }

    /// Register a role
    pub fn register(&mut self, role: RoleDefinition) {
        self.roles.insert(role.id.clone(), role);
    }

    /// Get a role by ID
    pub fn get(&self, id: &str) -> Option<&RoleDefinition> {
        self.roles.get(id)
    }

    /// Load roles from workflow definition
    pub fn load_from_workflow(&mut self, roles: Vec<RoleDefinition>) {
        for role in roles {
            self.register(role);
        }
    }
}

impl Default for RoleRegistry {
    fn default() -> Self {
        Self::new()
    }
}

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

    #[test]
    fn test_analysis_profile() {
        let profile = RoleProfile::Analysis;
        let caps = profile.default_capabilities();

        assert!(caps.contains(&Capability::ReadCode));
        assert!(caps.contains(&Capability::ExploreStructure));
        assert!(!caps.contains(&Capability::WriteSource));

        let restrictions = profile.default_restrictions();
        assert!(restrictions.iter().any(|r| r.action == "write:source"));
    }

    #[test]
    fn test_coding_profile() {
        let profile = RoleProfile::Coding;
        let caps = profile.default_capabilities();

        assert!(caps.contains(&Capability::WriteSource));
        assert!(caps.contains(&Capability::ExecuteTests));

        let restrictions = profile.default_restrictions();
        assert!(restrictions.is_empty());
    }

    #[test]
    fn test_verification_profile() {
        let profile = RoleProfile::Verification;
        let restrictions = profile.default_restrictions();

        assert!(restrictions.iter().any(|r| r.action == "write:source"));
        assert!(restrictions.iter().any(|r| r.action == "write:git"));
    }

    #[test]
    fn test_role_definition_override() {
        let role = RoleDefinition {
            id: "custom".to_string(),
            name: "Custom Role".to_string(),
            profile: Some(RoleProfile::Analysis),
            description: None,
            workspace: None,
            capabilities: vec!["write:source".to_string()],
            restrictions: vec![],
            model: None,
        };

        // Should have analysis capabilities plus the override
        let caps = role.effective_capabilities();
        assert!(caps.contains(&Capability::ReadCode));
        assert!(caps.contains(&Capability::WriteSource)); // Added via override
    }

    #[test]
    fn test_capability_parsing() {
        assert_eq!(
            "read:code".parse::<Capability>().unwrap(),
            Capability::ReadCode
        );
        assert_eq!(
            "write:source".parse::<Capability>().unwrap(),
            Capability::WriteSource
        );
        assert!("invalid:cap".parse::<Capability>().is_err());
    }
}