oximedia-cli 0.1.5

//! Access control CLI commands for media assets and projects.
//!
//! Provides subcommands for managing access permissions:
//! granting/revoking access, listing permissions, defining policies,
//! auditing access logs, and checking permissions.

use anyhow::{Context, Result};
use clap::Subcommand;
use colored::Colorize;

/// Access control subcommands.
#[derive(Subcommand, Debug)]
pub enum AccessCommand {
    /// Grant access to a user or group for a media asset
    Grant {
        /// Asset path or ID
        #[arg(long)]
        asset: String,

        /// User or group identifier
        #[arg(long)]
        principal: String,

        /// Permission level: read, write, admin, publish, review
        #[arg(long)]
        permission: String,

        /// Expiration date (ISO 8601) or duration (e.g., "30d", "1y")
        #[arg(long)]
        expires: Option<String>,

        /// Restrict to specific territories (comma-separated ISO 3166)
        #[arg(long)]
        territories: Option<String>,

        /// Additional conditions (JSON string)
        #[arg(long)]
        conditions: Option<String>,
    },

    /// Revoke access from a user or group
    Revoke {
        /// Asset path or ID
        #[arg(long)]
        asset: String,

        /// User or group identifier
        #[arg(long)]
        principal: String,

        /// Specific permission to revoke (omit for all)
        #[arg(long)]
        permission: Option<String>,

        /// Reason for revocation
        #[arg(long)]
        reason: Option<String>,
    },

    /// List access permissions for an asset or principal
    List {
        /// Asset path or ID (list permissions for this asset)
        #[arg(long)]
        asset: Option<String>,

        /// Principal to query (list what this user/group can access)
        #[arg(long)]
        principal: Option<String>,

        /// Filter by permission level
        #[arg(long)]
        permission_filter: Option<String>,

        /// Show expired permissions
        #[arg(long)]
        show_expired: bool,

        /// Output format: text, json
        #[arg(long, default_value = "text")]
        output_format: String,
    },

    /// Define or update an access policy
    Policy {
        /// Policy name
        #[arg(long)]
        name: String,

        /// Policy action: create, update, delete, show
        #[arg(long, default_value = "show")]
        action: String,

        /// Default permission level for new assets
        #[arg(long)]
        default_permission: Option<String>,

        /// Require MFA for access
        #[arg(long)]
        require_mfa: bool,

        /// Allowed IP ranges (comma-separated CIDR)
        #[arg(long)]
        ip_ranges: Option<String>,

        /// Maximum session duration in minutes
        #[arg(long)]
        max_session_minutes: Option<u32>,

        /// WCAG compliance level: A, AA, AAA
        #[arg(long)]
        wcag_level: Option<String>,
    },

    /// Audit access logs
    Audit {
        /// Asset path or ID to audit
        #[arg(long)]
        asset: Option<String>,

        /// Principal to audit
        #[arg(long)]
        principal: Option<String>,

        /// Start date for audit range (ISO 8601)
        #[arg(long)]
        from: Option<String>,

        /// End date for audit range (ISO 8601)
        #[arg(long)]
        to: Option<String>,

        /// Filter by action: grant, revoke, access, deny
        #[arg(long)]
        action_filter: Option<String>,

        /// Maximum number of entries to show
        #[arg(long, default_value = "100")]
        limit: u32,

        /// Output format: text, json, csv
        #[arg(long, default_value = "text")]
        output_format: String,
    },

    /// Check if a principal has permission on an asset
    Check {
        /// Asset path or ID
        #[arg(long)]
        asset: String,

        /// User or group identifier
        #[arg(long)]
        principal: String,

        /// Permission to check: read, write, admin, publish, review
        #[arg(long)]
        permission: String,

        /// Territory context for geo-restricted content (ISO 3166)
        #[arg(long)]
        territory: Option<String>,

        /// Show detailed reasoning
        #[arg(long)]
        detail: bool,
    },
}

/// Handle access command dispatch.
pub async fn handle_access_command(command: AccessCommand, json_output: bool) -> Result<()> {
    match command {
        AccessCommand::Grant {
            asset,
            principal,
            permission,
            expires,
            territories,
            conditions,
        } => {
            grant_access(
                &asset,
                &principal,
                &permission,
                expires.as_deref(),
                territories.as_deref(),
                conditions.as_deref(),
                json_output,
            )
            .await
        }
        AccessCommand::Revoke {
            asset,
            principal,
            permission,
            reason,
        } => {
            revoke_access(
                &asset,
                &principal,
                permission.as_deref(),
                reason.as_deref(),
                json_output,
            )
            .await
        }
        AccessCommand::List {
            asset,
            principal,
            permission_filter,
            show_expired,
            output_format,
        } => {
            list_permissions(
                asset.as_deref(),
                principal.as_deref(),
                permission_filter.as_deref(),
                show_expired,
                if json_output { "json" } else { &output_format },
            )
            .await
        }
        AccessCommand::Policy {
            name,
            action,
            default_permission,
            require_mfa,
            ip_ranges,
            max_session_minutes,
            wcag_level,
        } => {
            manage_policy(
                &name,
                &action,
                default_permission.as_deref(),
                require_mfa,
                ip_ranges.as_deref(),
                max_session_minutes,
                wcag_level.as_deref(),
                json_output,
            )
            .await
        }
        AccessCommand::Audit {
            asset,
            principal,
            from,
            to,
            action_filter,
            limit,
            output_format,
        } => {
            audit_access(
                asset.as_deref(),
                principal.as_deref(),
                from.as_deref(),
                to.as_deref(),
                action_filter.as_deref(),
                limit,
                if json_output { "json" } else { &output_format },
            )
            .await
        }
        AccessCommand::Check {
            asset,
            principal,
            permission,
            territory,
            detail,
        } => {
            check_permission(
                &asset,
                &principal,
                &permission,
                territory.as_deref(),
                detail,
                json_output,
            )
            .await
        }
    }
}

/// Validate permission level string.
fn validate_permission(permission: &str) -> Result<()> {
    match permission {
        "read" | "write" | "admin" | "publish" | "review" => Ok(()),
        other => Err(anyhow::anyhow!(
            "Unknown permission '{}'. Expected: read, write, admin, publish, review",
            other
        )),
    }
}

/// Grant access to a principal.
#[allow(clippy::too_many_arguments)]
async fn grant_access(
    asset: &str,
    principal: &str,
    permission: &str,
    expires: Option<&str>,
    territories: Option<&str>,
    conditions: Option<&str>,
    json_output: bool,
) -> Result<()> {
    validate_permission(permission)?;

    let territory_list: Vec<String> = territories
        .map(|t| t.split(',').map(|s| s.trim().to_string()).collect())
        .unwrap_or_default();

    let grant_id = format!("grant-{}", uuid::Uuid::new_v4().as_simple());

    if json_output {
        let result = serde_json::json!({
            "command": "grant",
            "grant_id": grant_id,
            "asset": asset,
            "principal": principal,
            "permission": permission,
            "expires": expires,
            "territories": territory_list,
            "conditions": conditions,
            "status": "granted",
        });
        let json_str =
            serde_json::to_string_pretty(&result).context("Failed to serialize result")?;
        println!("{json_str}");
    } else {
        println!("{}", "Access Granted".green().bold());
        println!("{}", "=".repeat(60));
        println!("{:25} {}", "Grant ID:", grant_id);
        println!("{:25} {}", "Asset:", asset);
        println!("{:25} {}", "Principal:", principal);
        println!("{:25} {}", "Permission:", permission);
        if let Some(exp) = expires {
            println!("{:25} {}", "Expires:", exp);
        }
        if !territory_list.is_empty() {
            println!("{:25} {}", "Territories:", territory_list.join(", "));
        }
        if let Some(cond) = conditions {
            println!("{:25} {}", "Conditions:", cond);
        }
        println!();
        println!(
            "{}",
            "Access permission granted successfully.".cyan().bold()
        );
    }

    Ok(())
}

/// Revoke access from a principal.
async fn revoke_access(
    asset: &str,
    principal: &str,
    permission: Option<&str>,
    reason: Option<&str>,
    json_output: bool,
) -> Result<()> {
    if let Some(perm) = permission {
        validate_permission(perm)?;
    }

    if json_output {
        let result = serde_json::json!({
            "command": "revoke",
            "asset": asset,
            "principal": principal,
            "permission": permission,
            "reason": reason,
            "status": "revoked",
        });
        let json_str =
            serde_json::to_string_pretty(&result).context("Failed to serialize result")?;
        println!("{json_str}");
    } else {
        println!("{}", "Access Revoked".green().bold());
        println!("{}", "=".repeat(60));
        println!("{:25} {}", "Asset:", asset);
        println!("{:25} {}", "Principal:", principal);
        if let Some(perm) = permission {
            println!("{:25} {}", "Permission:", perm);
        } else {
            println!("{:25} all", "Permission:");
        }
        if let Some(r) = reason {
            println!("{:25} {}", "Reason:", r);
        }
        println!();
        println!("{}", "Access revoked successfully.".cyan().bold());
    }

    Ok(())
}

/// List permissions for an asset or principal.
async fn list_permissions(
    asset: Option<&str>,
    principal: Option<&str>,
    permission_filter: Option<&str>,
    show_expired: bool,
    output_format: &str,
) -> Result<()> {
    match output_format {
        "json" => {
            let result = serde_json::json!({
                "command": "list",
                "asset": asset,
                "principal": principal,
                "permission_filter": permission_filter,
                "show_expired": show_expired,
                "permissions": [],
                "total_count": 0,
            });
            let json_str = serde_json::to_string_pretty(&result).context("Failed to serialize")?;
            println!("{json_str}");
        }
        _ => {
            println!("{}", "Access Permissions".green().bold());
            println!("{}", "=".repeat(60));
            if let Some(a) = asset {
                println!("{:25} {}", "Asset:", a);
            }
            if let Some(p) = principal {
                println!("{:25} {}", "Principal:", p);
            }
            if let Some(f) = permission_filter {
                println!("{:25} {}", "Filter:", f);
            }
            println!("{:25} {}", "Show expired:", show_expired);
            println!();
            println!("{}", "No permissions found.".yellow());
            println!(
                "{}",
                "Note: Full permission listing requires database integration.".yellow()
            );
        }
    }

    Ok(())
}

/// Manage access policies.
#[allow(clippy::too_many_arguments)]
async fn manage_policy(
    name: &str,
    action: &str,
    default_permission: Option<&str>,
    require_mfa: bool,
    ip_ranges: Option<&str>,
    max_session_minutes: Option<u32>,
    wcag_level: Option<&str>,
    json_output: bool,
) -> Result<()> {
    match action {
        "create" | "update" | "delete" | "show" => {}
        other => {
            return Err(anyhow::anyhow!(
                "Unknown policy action '{}'. Expected: create, update, delete, show",
                other
            ));
        }
    }

    if json_output {
        let result = serde_json::json!({
            "command": "policy",
            "name": name,
            "action": action,
            "default_permission": default_permission,
            "require_mfa": require_mfa,
            "ip_ranges": ip_ranges,
            "max_session_minutes": max_session_minutes,
            "wcag_level": wcag_level,
            "status": action,
        });
        let json_str =
            serde_json::to_string_pretty(&result).context("Failed to serialize result")?;
        println!("{json_str}");
    } else {
        println!("{}", format!("Access Policy: {action}").green().bold());
        println!("{}", "=".repeat(60));
        println!("{:25} {}", "Policy name:", name);
        println!("{:25} {}", "Action:", action);
        if let Some(dp) = default_permission {
            println!("{:25} {}", "Default permission:", dp);
        }
        println!("{:25} {}", "Require MFA:", require_mfa);
        if let Some(ip) = ip_ranges {
            println!("{:25} {}", "IP ranges:", ip);
        }
        if let Some(max) = max_session_minutes {
            println!("{:25} {} min", "Max session:", max);
        }
        if let Some(wcag) = wcag_level {
            println!("{:25} {}", "WCAG level:", wcag);
        }
        println!();
        println!(
            "{}",
            format!("Policy '{name}' {action} completed.").cyan().bold()
        );
    }

    Ok(())
}

/// Audit access logs.
#[allow(clippy::too_many_arguments)]
async fn audit_access(
    asset: Option<&str>,
    principal: Option<&str>,
    from: Option<&str>,
    to: Option<&str>,
    action_filter: Option<&str>,
    limit: u32,
    output_format: &str,
) -> Result<()> {
    match output_format {
        "json" | "csv" => {
            let result = serde_json::json!({
                "command": "audit",
                "asset": asset,
                "principal": principal,
                "from": from,
                "to": to,
                "action_filter": action_filter,
                "limit": limit,
                "entries": [],
                "total_entries": 0,
            });
            let json_str = serde_json::to_string_pretty(&result).context("Failed to serialize")?;
            println!("{json_str}");
        }
        _ => {
            println!("{}", "Access Audit Log".green().bold());
            println!("{}", "=".repeat(60));
            if let Some(a) = asset {
                println!("{:25} {}", "Asset:", a);
            }
            if let Some(p) = principal {
                println!("{:25} {}", "Principal:", p);
            }
            if let Some(f) = from {
                println!("{:25} {}", "From:", f);
            }
            if let Some(t) = to {
                println!("{:25} {}", "To:", t);
            }
            if let Some(af) = action_filter {
                println!("{:25} {}", "Action filter:", af);
            }
            println!("{:25} {}", "Limit:", limit);
            println!();
            println!("{}", "No audit entries found.".yellow());
            println!(
                "{}",
                "Note: Full audit logging requires database integration.".yellow()
            );
        }
    }

    Ok(())
}

/// Check if a principal has a specific permission on an asset.
async fn check_permission(
    asset: &str,
    principal: &str,
    permission: &str,
    territory: Option<&str>,
    detail: bool,
    json_output: bool,
) -> Result<()> {
    validate_permission(permission)?;

    // Default: permission denied (requires database to truly verify)
    let allowed = false;
    let reason = "No matching permission grant found (database integration pending)";

    if json_output {
        let result = serde_json::json!({
            "command": "check",
            "asset": asset,
            "principal": principal,
            "permission": permission,
            "territory": territory,
            "allowed": allowed,
            "reason": reason,
        });
        let json_str =
            serde_json::to_string_pretty(&result).context("Failed to serialize result")?;
        println!("{json_str}");
    } else {
        println!("{}", "Permission Check".green().bold());
        println!("{}", "=".repeat(60));
        println!("{:25} {}", "Asset:", asset);
        println!("{:25} {}", "Principal:", principal);
        println!("{:25} {}", "Permission:", permission);
        if let Some(terr) = territory {
            println!("{:25} {}", "Territory:", terr);
        }
        println!();
        if allowed {
            println!("{}", "ALLOWED".green().bold());
        } else {
            println!("{}", "DENIED".red().bold());
        }
        if detail {
            println!("{:25} {}", "Reason:", reason);
        }
    }

    Ok(())
}

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

    #[test]
    fn test_validate_permission() {
        assert!(validate_permission("read").is_ok());
        assert!(validate_permission("write").is_ok());
        assert!(validate_permission("admin").is_ok());
        assert!(validate_permission("publish").is_ok());
        assert!(validate_permission("review").is_ok());
        assert!(validate_permission("invalid").is_err());
    }

    #[test]
    fn test_access_command_grant() {
        let cmd = AccessCommand::Grant {
            asset: "video-001".to_string(),
            principal: "user@example.com".to_string(),
            permission: "read".to_string(),
            expires: Some("2027-01-01T00:00:00Z".to_string()),
            territories: Some("US,CA,GB".to_string()),
            conditions: None,
        };
        assert!(matches!(cmd, AccessCommand::Grant { .. }));
    }

    #[test]
    fn test_access_command_revoke() {
        let cmd = AccessCommand::Revoke {
            asset: "video-001".to_string(),
            principal: "user@example.com".to_string(),
            permission: Some("write".to_string()),
            reason: Some("Project completed".to_string()),
        };
        assert!(matches!(cmd, AccessCommand::Revoke { .. }));
    }

    #[test]
    fn test_access_command_check() {
        let cmd = AccessCommand::Check {
            asset: "video-001".to_string(),
            principal: "editor@studio.com".to_string(),
            permission: "write".to_string(),
            territory: Some("US".to_string()),
            detail: true,
        };
        assert!(matches!(cmd, AccessCommand::Check { .. }));
    }

    #[test]
    fn test_access_command_policy() {
        let cmd = AccessCommand::Policy {
            name: "default-studio".to_string(),
            action: "create".to_string(),
            default_permission: Some("read".to_string()),
            require_mfa: true,
            ip_ranges: Some("10.0.0.0/8".to_string()),
            max_session_minutes: Some(480),
            wcag_level: Some("AA".to_string()),
        };
        assert!(matches!(cmd, AccessCommand::Policy { .. }));
    }
}