spiresql 0.1.2

//! Admin client for topic and consumer group management
#![allow(dead_code)]

use super::error::StreamError;
use super::types::TopicPartition;
use std::collections::HashMap;

/// Admin client for SpireDB stream management
pub struct AdminClient {
    bootstrap_servers: String,
}

impl AdminClient {
    /// Create a new admin client
    pub fn new(bootstrap_servers: impl Into<String>) -> Self {
        Self {
            bootstrap_servers: bootstrap_servers.into(),
        }
    }

    /// Get bootstrap servers
    pub fn bootstrap_servers(&self) -> &str {
        &self.bootstrap_servers
    }

    // === Topic Operations ===

    /// Create a new topic
    pub async fn create_topic(&self, name: &str, config: TopicConfig) -> Result<(), StreamError> {
        let _ = (name, config);
        // In a real implementation, this would call XGROUP CREATE or similar
        Ok(())
    }

    /// Delete a topic
    pub async fn delete_topic(&self, name: &str) -> Result<(), StreamError> {
        let _ = name;
        Ok(())
    }

    /// List all topics
    pub async fn list_topics(&self) -> Result<Vec<String>, StreamError> {
        Ok(Vec::new())
    }

    /// Describe a topic
    pub async fn describe_topic(&self, name: &str) -> Result<TopicInfo, StreamError> {
        Ok(TopicInfo {
            name: name.to_string(),
            partitions: 1,
            replication_factor: 1,
            config: HashMap::new(),
        })
    }

    // === Consumer Group Operations ===

    /// List consumer groups
    pub async fn list_consumer_groups(&self) -> Result<Vec<String>, StreamError> {
        Ok(Vec::new())
    }

    /// Describe a consumer group
    pub async fn describe_consumer_group(&self, group: &str) -> Result<GroupInfo, StreamError> {
        Ok(GroupInfo {
            group_id: group.to_string(),
            state: GroupState::Empty,
            members: Vec::new(),
            coordinator: None,
        })
    }

    /// Delete a consumer group
    pub async fn delete_consumer_group(&self, _group: &str) -> Result<(), StreamError> {
        // In a real implementation, this would call XGROUP DESTROY
        Ok(())
    }

    /// Reset consumer group offsets
    pub async fn reset_offsets(
        &self,
        _group: &str,
        _topic: &str,
        _offset: OffsetSpec,
    ) -> Result<(), StreamError> {
        Ok(())
    }

    /// Close the admin client
    pub async fn close(&self) -> Result<(), StreamError> {
        Ok(())
    }
}

/// Topic configuration
#[derive(Debug, Clone, Default)]
pub struct TopicConfig {
    /// Number of partitions
    pub partitions: u32,
    /// Replication factor
    pub replication_factor: u16,
    /// Max entry size (MAXLEN equivalent)
    pub max_entries: Option<u64>,
    /// Retention time (ms)
    pub retention_ms: Option<u64>,
    /// Additional config options
    pub config: HashMap<String, String>,
}

impl TopicConfig {
    /// Create with defaults
    pub fn new() -> Self {
        Self {
            partitions: 1,
            replication_factor: 1,
            ..Default::default()
        }
    }

    /// Set number of partitions
    pub fn partitions(mut self, n: u32) -> Self {
        self.partitions = n;
        self
    }

    /// Set replication factor
    pub fn replication_factor(mut self, n: u16) -> Self {
        self.replication_factor = n;
        self
    }

    /// Set max entries
    pub fn max_entries(mut self, n: u64) -> Self {
        self.max_entries = Some(n);
        self
    }

    /// Set retention time (ms)
    pub fn retention_ms(mut self, ms: u64) -> Self {
        self.retention_ms = Some(ms);
        self
    }
}

/// Topic information
#[derive(Debug, Clone)]
pub struct TopicInfo {
    /// Topic name
    pub name: String,
    /// Number of partitions
    pub partitions: u32,
    /// Replication factor
    pub replication_factor: u16,
    /// Configuration
    pub config: HashMap<String, String>,
}

/// Consumer group state
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum GroupState {
    /// No members
    Empty,
    /// Rebalancing
    Rebalancing,
    /// Stable with active members
    Stable,
    /// Dead (will be deleted)
    Dead,
}

/// Consumer group information
#[derive(Debug, Clone)]
pub struct GroupInfo {
    /// Group ID
    pub group_id: String,
    /// Current state
    pub state: GroupState,
    /// Group members
    pub members: Vec<MemberInfo>,
    /// Coordinator node
    pub coordinator: Option<String>,
}

/// Consumer group member information
#[derive(Debug, Clone)]
pub struct MemberInfo {
    /// Member ID
    pub member_id: String,
    /// Client ID
    pub client_id: String,
    /// Client host
    pub client_host: String,
    /// Assigned partitions
    pub assignment: Vec<TopicPartition>,
}

/// Offset specification for reset
#[derive(Debug, Clone)]
pub enum OffsetSpec {
    /// Reset to earliest
    Earliest,
    /// Reset to latest
    Latest,
    /// Reset to specific offset
    Offset(u64),
    /// Reset to timestamp
    Timestamp(u64),
}