//! IPC (Inter-Process Communication) types for Tauri commands

use serde::{Deserialize, Serialize};

use crate::jobs::JobStatus;
use crate::slide::SlideStatus;

/// Service status response
#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct SlidescopeStatus {
    /// Whether the service is initialized
    pub initialized: bool,
    /// Whether GPU is available
    pub gpu_available: bool,
    /// GPU device name if available
    pub gpu_name: Option<String>,
    /// Number of slides in registry
    pub slide_count: usize,
    /// Number of pending jobs
    pub pending_jobs: usize,
    /// Currently active job ID
    pub active_job: Option<String>,
    /// Workspace directory
    pub workspace: Option<String>,
    /// Service uptime in seconds
    pub uptime_secs: u64,
}

/// Filter options for listing slides
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct SlideFilter {
    /// Filter by status
    pub status: Option<SlideStatus>,
    /// Search by name (partial match)
    pub name_contains: Option<String>,
    /// Limit number of results
    pub limit: Option<usize>,
    /// Offset for pagination
    pub offset: Option<usize>,
}

/// Batch operation result
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BatchResult {
    /// Number of successful operations
    pub succeeded: usize,
    /// Number of failed operations
    pub failed: usize,
    /// Error messages for failures
    pub errors: Vec<String>,
}

/// Import options for slide import
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct ImportOptions {
    /// Auto-detect stain type
    pub auto_detect_stain: bool,
    /// Generate thumbnail
    pub generate_thumbnail: bool,
    /// Thumbnail size (default 256)
    pub thumbnail_size: Option<u32>,
    /// Custom name override
    pub name: Option<String>,
}

impl ImportOptions {
    /// Default import with all features enabled
    pub fn default_with_all() -> Self {
        Self {
            auto_detect_stain: true,
            generate_thumbnail: true,
            thumbnail_size: Some(256),
            name: None,
        }
    }
}

/// Export format for results
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "lowercase")]
#[derive(Default)]
pub enum ExportFormat {
    /// TIFF with all stain layers
    #[default]
    Tiff,
    /// PNG images
    Png,
    /// JPEG images
    Jpeg,
    /// JSON metadata only
    Json,
}

/// Export request for results
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ExportRequest {
    /// Slide ID to export
    pub slide_id: String,
    /// Output directory
    pub output_dir: String,
    /// Export format
    pub format: ExportFormat,
    /// Include original image
    pub include_original: bool,
    /// Include stain layers
    pub include_stains: bool,
    /// Include composite
    pub include_composite: bool,
}

/// Queue status summary
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct QueueStatus {
    /// Jobs currently in queue
    pub queued: Vec<JobStatus>,
    /// Currently processing job
    pub active: Option<JobStatus>,
    /// Recently completed jobs
    pub recent_completed: Vec<JobStatus>,
}

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

    #[test]
    fn test_slidescope_status_default() {
        let status = SlidescopeStatus::default();
        assert!(!status.initialized);
        assert!(!status.gpu_available);
        assert_eq!(status.slide_count, 0);
    }

    #[test]
    fn test_slide_filter_serialization() {
        let filter = SlideFilter {
            status: Some(SlideStatus::Imported),
            name_contains: Some("sample".to_string()),
            limit: Some(10),
            offset: None,
        };

        let json = serde_json::to_string(&filter).unwrap();
        let deserialized: SlideFilter = serde_json::from_str(&json).unwrap();
        assert_eq!(deserialized.status, Some(SlideStatus::Imported));
    }

    #[test]
    fn test_export_format() {
        let format = ExportFormat::Tiff;
        let json = serde_json::to_string(&format).unwrap();
        assert_eq!(json, "\"tiff\"");
    }

    #[test]
    fn test_import_options() {
        let opts = ImportOptions::default_with_all();
        assert!(opts.auto_detect_stain);
        assert!(opts.generate_thumbnail);
    }
}