use serde::{Deserialize, Serialize};
use crate::Status;

/// Complete structured data from an agent
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AgentData {
    pub hostname: String,
    pub agent_version: String,
    pub build_version: Option<String>,
    pub timestamp: u64,
    pub system: SystemData,
    pub services: Vec<ServiceData>,
    pub backup: BackupData,
}

/// System-level monitoring data
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SystemData {
    pub cpu: CpuData,
    pub memory: MemoryData,
    pub storage: StorageData,
}

/// CPU monitoring data
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CpuData {
    pub load_1min: f32,
    pub load_5min: f32,
    pub load_15min: f32,
    pub frequency_mhz: f32,
    pub temperature_celsius: Option<f32>,
    pub load_status: Status,
    pub temperature_status: Status,
}

/// Memory monitoring data
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct MemoryData {
    pub usage_percent: f32,
    pub total_gb: f32,
    pub used_gb: f32,
    pub available_gb: f32,
    pub swap_total_gb: f32,
    pub swap_used_gb: f32,
    pub tmpfs: Vec<TmpfsData>,
    pub usage_status: Status,
}

/// Tmpfs filesystem data
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TmpfsData {
    pub mount: String,
    pub usage_percent: f32,
    pub used_gb: f32,
    pub total_gb: f32,
}

/// Storage monitoring data
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct StorageData {
    pub drives: Vec<DriveData>,
    pub pools: Vec<PoolData>,
}

/// Individual drive data
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DriveData {
    pub name: String,
    pub health: String,
    pub temperature_celsius: Option<f32>,
    pub wear_percent: Option<f32>,
    pub filesystems: Vec<FilesystemData>,
    pub temperature_status: Status,
    pub health_status: Status,
}

/// Filesystem on a drive
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct FilesystemData {
    pub mount: String,
    pub usage_percent: f32,
    pub used_gb: f32,
    pub total_gb: f32,
    pub usage_status: Status,
}

/// Storage pool (MergerFS, RAID, etc.)
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PoolData {
    pub name: String,
    pub mount: String,
    pub pool_type: String, // "mergerfs", "raid", etc.
    pub health: String,
    pub usage_percent: f32,
    pub used_gb: f32,
    pub total_gb: f32,
    pub data_drives: Vec<PoolDriveData>,
    pub parity_drives: Vec<PoolDriveData>,
    pub health_status: Status,
    pub usage_status: Status,
}

/// Drive in a storage pool
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PoolDriveData {
    pub name: String,
    pub serial_number: Option<String>,
    pub temperature_celsius: Option<f32>,
    pub wear_percent: Option<f32>,
    pub health: String,
    pub health_status: Status,
    pub temperature_status: Status,
}

/// Service monitoring data
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ServiceData {
    pub name: String,
    pub memory_mb: f32,
    pub disk_gb: f32,
    pub user_stopped: bool,
    pub service_status: Status,
    pub sub_services: Vec<SubServiceData>,
}

/// Sub-service data (nginx sites, docker containers, etc.)
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SubServiceData {
    pub name: String,
    pub service_status: Status,
    pub metrics: Vec<SubServiceMetric>,
}

/// Individual metric for a sub-service
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SubServiceMetric {
    pub label: String,
    pub value: f32,
    pub unit: Option<String>,
}

/// Backup system data
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BackupData {
    pub status: String,
    pub total_size_gb: Option<f32>,
    pub repository_health: Option<String>,
    pub repository_disk: Option<BackupDiskData>,
    pub last_backup_size_gb: Option<f32>,
    pub start_time_raw: Option<String>,
}

/// Backup repository disk information
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BackupDiskData {
    pub serial: String,
    pub usage_percent: f32,
    pub used_gb: f32,
    pub total_gb: f32,
    pub wear_percent: Option<f32>,
    pub temperature_celsius: Option<f32>,
}

impl AgentData {
    /// Create new agent data with current timestamp
    pub fn new(hostname: String, agent_version: String) -> Self {
        Self {
            hostname,
            agent_version,
            build_version: None,
            timestamp: chrono::Utc::now().timestamp() as u64,
            system: SystemData {
                cpu: CpuData {
                    load_1min: 0.0,
                    load_5min: 0.0,
                    load_15min: 0.0,
                    frequency_mhz: 0.0,
                    temperature_celsius: None,
                    load_status: Status::Unknown,
                    temperature_status: Status::Unknown,
                },
                memory: MemoryData {
                    usage_percent: 0.0,
                    total_gb: 0.0,
                    used_gb: 0.0,
                    available_gb: 0.0,
                    swap_total_gb: 0.0,
                    swap_used_gb: 0.0,
                    tmpfs: Vec::new(),
                    usage_status: Status::Unknown,
                },
                storage: StorageData {
                    drives: Vec::new(),
                    pools: Vec::new(),
                },
            },
            services: Vec::new(),
            backup: BackupData {
                status: "unknown".to_string(),
                total_size_gb: None,
                repository_health: None,
                repository_disk: None,
                last_backup_size_gb: None,
                start_time_raw: None,
            },
        }
    }
}