use anyhow::Result;
use uuid::Uuid;

/// Core wipe orchestration engine.
///
/// Coordinates the full wipe lifecycle: pre-wipe steps (backups, warnings,
/// player kicks), the wipe itself (map swap, plugin data cleanup, seed
/// rotation), and post-wipe verification (health checks, rollback on
/// failure). Works through the PanelAdapter trait so it is panel-agnostic.
///
/// All wipe executions are logged to the wipe_history table with full
/// execution traces for audit and debugging.
pub struct WipeEngine {
    pub db: sqlx::PgPool,
    pub nats: async_nats::Client,
}

impl WipeEngine {
    pub fn new(db: sqlx::PgPool, nats: async_nats::Client) -> Self {
        Self { db, nats }
    }

    /// Execute a full wipe sequence for the given wipe history record.
    ///
    /// Orchestrates: pre-wipe -> wipe actions -> post-wipe verification.
    /// On failure at any stage, triggers rollback if configured.
    pub async fn execute_wipe(&self, _wipe_history_id: Uuid) -> Result<()> {
        // TODO: Load wipe history + profile + schedule from DB
        // TODO: Resolve the PanelAdapter for this server
        // TODO: Run pre-wipe -> wipe -> post-wipe pipeline
        // TODO: Update wipe_history status throughout
        // TODO: Publish NATS events for real-time UI updates
        todo!()
    }

    /// Execute pre-wipe steps: countdown warnings, player kicks, backups,
    /// Discord/Pushbullet announcements, custom commands.
    pub async fn execute_pre_wipe(&self, _wipe_history_id: Uuid) -> Result<()> {
        // TODO: Load PreWipeConfig from wipe profile
        // TODO: Send countdown warnings via RCON at configured intervals
        // TODO: Create backup if backup_before_wipe is true
        // TODO: Kick players with configured message
        // TODO: Run final save command
        // TODO: Send Discord/Pushbullet pre-announce notifications
        // TODO: Execute custom_commands_before
        todo!()
    }

    /// Execute the actual wipe actions: stop server, delete/swap map,
    /// wipe plugin data, update seed, restart server.
    pub async fn execute_wipe_actions(&self, _wipe_history_id: Uuid) -> Result<()> {
        // TODO: Stop the server via PanelAdapter
        // TODO: Delete map/save files based on wipe type
        // TODO: Wipe plugin data files based on plugin wipe flags
        // TODO: Update seed if configured for rotation
        // TODO: Upload new custom map if map rotation is active
        // TODO: Update server.cfg with new settings
        // TODO: Trigger Steam update if force wipe
        // TODO: Start the server
        todo!()
    }

    /// Execute post-wipe verification: health checks on server startup,
    /// map correctness, plugin loading, player slot availability.
    pub async fn execute_post_wipe_verification(&self, _wipe_history_id: Uuid) -> Result<()> {
        // TODO: Wait for server to report running via PanelAdapter
        // TODO: Verify correct map loaded (check level name via RCON)
        // TODO: Verify all required plugins loaded
        // TODO: Verify player slots are open
        // TODO: Retry up to max_restart_attempts on failure
        // TODO: Send Discord/Pushbullet post-announce notifications
        // TODO: Execute post_wipe_commands
        todo!()
    }

    /// Execute rollback: restore pre-wipe backup, restart server,
    /// notify operators of failure.
    pub async fn execute_rollback(&self, _wipe_history_id: Uuid) -> Result<()> {
        // TODO: Load backup_reference from wipe_history
        // TODO: Stop the server
        // TODO: Restore backup via BackupManager
        // TODO: Start the server
        // TODO: Verify server health post-rollback
        // TODO: Update wipe_history status to 'rolled_back'
        // TODO: Send failure notifications via Discord/Pushbullet
        todo!()
    }
}
