//! RBAC Repository - Database-agnostic wrapper
//!
//! This module provides a compatibility layer for the old RBAC repository interface
//! while using the new database-agnostic implementation under the hood.

use anyhow::Result;
use chrono::{DateTime, Utc};
use shared::auth::{AccessRule, ResourceType, Role};
use std::collections::HashMap;
use uuid::Uuid;

use crate::database::DatabasePool;
use crate::database::rbac::{
    AccessAuditEntry, AccessRuleRow, PermissionCacheEntry, RBACRepository as NewRBACRepository,
    UserCategory, UserTag,
};
use sqlx::PgPool;

/// Legacy RBAC Repository wrapper
///
/// This struct provides backward compatibility for existing code that uses
/// the old RBAC repository interface, while internally using the new
/// database-agnostic implementation.
#[derive(Debug, Clone)]
pub struct RBACRepository {
    inner: NewRBACRepository,
}

impl RBACRepository {
    /// Create a new RBAC repository from a PostgreSQL pool (legacy compatibility)
    pub fn new(pool: PgPool) -> Self {
        // Convert PgPool to DatabasePool for compatibility
        let database_pool = DatabasePool::PostgreSQL(pool);
        let inner = NewRBACRepository::from_pool(&database_pool);
        Self { inner }
    }

    /// Create a new RBAC repository from the new database pool
    pub fn from_database_pool(pool: &DatabasePool) -> Self {
        let inner = NewRBACRepository::from_pool(pool);
        Self { inner }
    }

    /// Initialize RBAC tables
    pub async fn init_tables(&self) -> Result<()> {
        self.inner.init_tables().await
    }

    // Category management
    pub async fn create_category(
        &self,
        name: &str,
        description: Option<&str>,
        parent_id: Option<Uuid>,
    ) -> Result<UserCategory> {
        self.inner
            .create_category(name, description, parent_id)
            .await
    }

    pub async fn get_category(&self, id: Uuid) -> Result<Option<UserCategory>> {
        // This would need to be implemented in the new repository
        // For now, return None as a placeholder
        Ok(None)
    }

    pub async fn update_category(&self, category: &UserCategory) -> Result<()> {
        // This would need to be implemented in the new repository
        // For now, return Ok as a placeholder
        Ok(())
    }

    pub async fn delete_category(&self, id: Uuid) -> Result<()> {
        // This would need to be implemented in the new repository
        // For now, return Ok as a placeholder
        Ok(())
    }

    pub async fn get_all_categories(&self) -> Result<Vec<UserCategory>> {
        // This would need to be implemented in the new repository
        // For now, return empty vec as a placeholder
        Ok(Vec::new())
    }

    pub async fn get_category_hierarchy(&self) -> Result<Vec<UserCategory>> {
        // This would need to be implemented in the new repository
        // For now, return empty vec as a placeholder
        Ok(Vec::new())
    }

    pub async fn get_user_categories(&self, user_id: Uuid) -> Result<Vec<UserCategory>> {
        self.inner.get_user_categories(user_id).await
    }

    pub async fn assign_category_to_user(
        &self,
        user_id: Uuid,
        category_id: Uuid,
        assigned_by: Option<Uuid>,
    ) -> Result<()> {
        self.inner
            .assign_category_to_user(user_id, category_id, assigned_by)
            .await
    }

    pub async fn remove_category_from_user(&self, user_id: Uuid, category_id: Uuid) -> Result<()> {
        // This would need to be implemented in the new repository
        // For now, return Ok as a placeholder
        Ok(())
    }

    // Tag management
    pub async fn create_tag(
        &self,
        name: &str,
        description: Option<&str>,
        color: Option<&str>,
    ) -> Result<UserTag> {
        self.inner.create_tag(name, description, color).await
    }

    pub async fn get_tag(&self, id: Uuid) -> Result<Option<UserTag>> {
        // This would need to be implemented in the new repository
        // For now, return None as a placeholder
        Ok(None)
    }

    pub async fn update_tag(&self, tag: &UserTag) -> Result<()> {
        // This would need to be implemented in the new repository
        // For now, return Ok as a placeholder
        Ok(())
    }

    pub async fn delete_tag(&self, id: Uuid) -> Result<()> {
        // This would need to be implemented in the new repository
        // For now, return Ok as a placeholder
        Ok(())
    }

    pub async fn get_all_tags(&self) -> Result<Vec<UserTag>> {
        // This would need to be implemented in the new repository
        // For now, return empty vec as a placeholder
        Ok(Vec::new())
    }

    pub async fn get_user_tags(&self, user_id: Uuid) -> Result<Vec<UserTag>> {
        self.inner.get_user_tags(user_id).await
    }

    pub async fn assign_tag_to_user(
        &self,
        user_id: Uuid,
        tag_id: Uuid,
        assigned_by: Option<Uuid>,
    ) -> Result<()> {
        self.inner
            .assign_tag_to_user(user_id, tag_id, assigned_by)
            .await
    }

    pub async fn remove_tag_from_user(&self, user_id: Uuid, tag_id: Uuid) -> Result<()> {
        // This would need to be implemented in the new repository
        // For now, return Ok as a placeholder
        Ok(())
    }

    // Access rules management
    pub async fn create_access_rule(
        &self,
        name: &str,
        description: Option<&str>,
        resource_type: &str,
        resource_name: &str,
        action: &str,
        priority: i32,
    ) -> Result<AccessRuleRow> {
        self.inner
            .create_access_rule(
                name,
                description,
                resource_type,
                resource_name,
                action,
                priority,
            )
            .await
    }

    pub async fn get_access_rule(&self, id: Uuid) -> Result<Option<AccessRuleRow>> {
        // This would need to be implemented in the new repository
        // For now, return None as a placeholder
        Ok(None)
    }

    pub async fn update_access_rule(&self, rule: &AccessRuleRow) -> Result<()> {
        // This would need to be implemented in the new repository
        // For now, return Ok as a placeholder
        Ok(())
    }

    pub async fn delete_access_rule(&self, id: Uuid) -> Result<()> {
        // This would need to be implemented in the new repository
        // For now, return Ok as a placeholder
        Ok(())
    }

    pub async fn get_all_access_rules(&self) -> Result<Vec<AccessRuleRow>> {
        // This would need to be implemented in the new repository
        // For now, return empty vec as a placeholder
        Ok(Vec::new())
    }

    pub async fn get_access_rules_for_resource(
        &self,
        resource_type: &str,
        resource_name: &str,
    ) -> Result<Vec<AccessRuleRow>> {
        // This would need to be implemented in the new repository
        // For now, return empty vec as a placeholder
        Ok(Vec::new())
    }

    // Permission checking
    pub async fn check_access(
        &self,
        user_id: Uuid,
        resource_type: &str,
        resource_name: &str,
        action: &str,
    ) -> Result<bool> {
        self.inner
            .check_access(user_id, resource_type, resource_name, action)
            .await
    }

    pub async fn check_access_with_context(
        &self,
        user_id: Uuid,
        resource_type: &str,
        resource_name: &str,
        action: &str,
        context: HashMap<String, serde_json::Value>,
    ) -> Result<bool> {
        // For now, just delegate to the basic check_access method
        self.inner
            .check_access(user_id, resource_type, resource_name, action)
            .await
    }

    // Audit logging
    pub async fn log_access_attempt(
        &self,
        user_id: Option<Uuid>,
        resource_type: &str,
        resource_name: &str,
        action: &str,
        access_result: &str,
        rule_id: Option<Uuid>,
        ip_address: Option<std::net::IpAddr>,
        user_agent: Option<&str>,
        session_id: Option<&str>,
        additional_context: Option<serde_json::Value>,
    ) -> Result<()> {
        self.inner
            .log_access_attempt(
                user_id,
                resource_type,
                resource_name,
                action,
                access_result,
                rule_id,
                ip_address,
                user_agent,
                session_id,
                additional_context,
            )
            .await
    }

    pub async fn get_access_audit_entries(
        &self,
        user_id: Option<Uuid>,
        resource_type: Option<&str>,
        limit: Option<i64>,
        offset: Option<i64>,
    ) -> Result<Vec<AccessAuditEntry>> {
        // This would need to be implemented in the new repository
        // For now, return empty vec as a placeholder
        Ok(Vec::new())
    }

    // Cache management
    pub async fn get_cached_permission(
        &self,
        cache_key: &str,
    ) -> Result<Option<PermissionCacheEntry>> {
        // This would need to be implemented in the new repository
        // For now, return None as a placeholder
        Ok(None)
    }

    pub async fn cache_permission(
        &self,
        user_id: Uuid,
        resource_type: &str,
        resource_name: &str,
        action: &str,
        access_result: &str,
        expires_at: DateTime<Utc>,
    ) -> Result<()> {
        // This would need to be implemented in the new repository
        // For now, return Ok as a placeholder
        Ok(())
    }

    pub async fn invalidate_user_cache(&self, user_id: Uuid) -> Result<()> {
        // This would need to be implemented in the new repository
        // For now, return Ok as a placeholder
        Ok(())
    }

    pub async fn cleanup_expired_cache(&self) -> Result<u64> {
        self.inner.cleanup_expired_cache().await
    }

    // Utility methods
    pub async fn get_user_effective_permissions(&self, user_id: Uuid) -> Result<Vec<AccessRule>> {
        // This would need to be implemented in the new repository
        // For now, return empty vec as a placeholder
        Ok(Vec::new())
    }

    pub async fn get_resource_permissions(
        &self,
        resource_type: &str,
        resource_name: &str,
    ) -> Result<Vec<AccessRule>> {
        // This would need to be implemented in the new repository
        // For now, return empty vec as a placeholder
        Ok(Vec::new())
    }

    pub async fn bulk_check_access(
        &self,
        user_id: Uuid,
        permissions: Vec<(String, String, String)>, // (resource_type, resource_name, action)
    ) -> Result<HashMap<String, bool>> {
        // This would need to be implemented in the new repository
        // For now, return empty map as a placeholder
        Ok(HashMap::new())
    }

    // Statistics and reporting
    pub async fn get_access_statistics(
        &self,
        start_date: Option<DateTime<Utc>>,
        end_date: Option<DateTime<Utc>>,
    ) -> Result<HashMap<String, i64>> {
        // This would need to be implemented in the new repository
        // For now, return empty map as a placeholder
        Ok(HashMap::new())
    }

    pub async fn get_user_access_summary(
        &self,
        user_id: Uuid,
        start_date: Option<DateTime<Utc>>,
        end_date: Option<DateTime<Utc>>,
    ) -> Result<HashMap<String, i64>> {
        // This would need to be implemented in the new repository
        // For now, return empty map as a placeholder
        Ok(HashMap::new())
    }
}

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

    #[test]
    fn test_rbac_repository_creation() {
        // This test would require a database connection
        // For now, just test that the module compiles
        assert!(true);
    }
}
