use std::path::PathBuf;

use async_trait::async_trait;
use libertas_core::{
    error::{CoreError, CoreResult},
    models::Media,
    plugins::{MediaProcessorPlugin, PluginContext, PluginData},
};
use tokio::fs;
use xmp_toolkit::{XmpMeta, XmpValue};

pub struct XmpWriterPlugin;

#[async_trait]
impl MediaProcessorPlugin for XmpWriterPlugin {
    fn name(&self) -> &'static str {
        "xmp_writer"
    }

    async fn process(&self, media: &Media, context: &PluginContext) -> CoreResult<PluginData> {
        let fresh_media = context
            .media_repo
            .find_by_id(media.id)
            .await?
            .ok_or(CoreError::NotFound("Media".to_string(), media.id))?;

        let file_path = PathBuf::from(&context.media_library_path).join(&fresh_media.storage_path);
        let xmp_path = format!("{}.xmp", file_path.to_string_lossy());

        let mut xmp = XmpMeta::new()
            .map_err(|e| CoreError::Unknown(format!("Failed to create new XMP metadata: {}", e)))?;

        xmp.set_property(
            "http://purl.org/dc/elements/1.1/",
            "description",
            &fresh_media.original_filename.into(),
        )
        .map_err(|e| {
            CoreError::Unknown(format!("Failed to set description property in XMP: {}", e))
        })?;

        if let Some(date_taken) = &fresh_media.date_taken {
            let date_str = date_taken.to_rfc3339();
            xmp.set_property(
                "http://ns.adobe.com/exif/1.0/",
                "DateTimeOriginal",
                &XmpValue::from(date_str),
            )
            .map_err(|e| {
                CoreError::Unknown(format!("Failed to set DateTimeOriginal in XMP: {}", e))
            })?;
        }

        if let Some(_location) = &fresh_media.extracted_location {
            // TODO: Set location properties in XMP
        }

        let xmp_str = xmp.to_string();

        fs::write(&xmp_path, xmp_str).await?;

        Ok(PluginData {
            message: "XMP sidecar written successfully.".to_string(),
        })
    }
}