//! Barcode parse skill

use crate::{
    DriverCallback, DriverCategory, DriverContext, file_exists,
    types::{Driver, DriverParameter},
};
use anyhow::Result;
use serde_json::{Value, json};
use std::collections::HashMap;

#[derive(Debug)]
pub struct BarcodeParseDriver;

#[async_trait::async_trait]
impl Driver for BarcodeParseDriver {
    fn name(&self) -> &str {
        "barcode_parse"
    }

    fn description(&self) -> &str {
        "Parse/read content from a barcode image"
    }

    fn usage_hint(&self) -> &str {
        "Use this skill to decode barcodes from images."
    }

    fn parameters(&self) -> Vec<DriverParameter> {
        vec![DriverParameter {
            name: "path".to_string(),
            param_type: "string".to_string(),
            description: "Path to the barcode image".to_string(),
            required: true,
            default: None,
            example: Some(Value::String("/path/to/barcode.png".to_string())),
            enum_values: None,
        }]
    }

    fn example_call(&self) -> Value {
        json!({
            "action": "barcode_parse",
            "parameters": {
                "path": "/images/barcode.png"
            }
        })
    }

    fn example_output(&self) -> String {
        "Barcode content: 123456789012".to_string()
    }

    fn category(&self) -> DriverCategory {
        DriverCategory::Media
    }

    async fn execute(
        &self,
        parameters: &HashMap<String, Value>,
        callback: Option<&dyn DriverCallback>,
        context: Option<&DriverContext>,
    ) -> Result<String> {
        let task_id = context.as_ref().and_then(|c| c.task_id()).map(String::from);
        let driver_index = context.as_ref().and_then(|c| c.driver_index());
        let step_name = context
            .as_ref()
            .and_then(|c| c.driver_name())
            .map(String::from);
        let cb = callback;
        if let Some(cb) = cb {
            cb.on_start(task_id.clone(), driver_index, step_name);
            cb.on_log(
                task_id.clone(),
                driver_index,
                Some("Starting barcode parsing".to_string()),
            );
            cb.on_progress(task_id.clone(), driver_index, Some(10), None);
        }
        let path = parameters
            .get("path")
            .and_then(|v| v.as_str())
            .ok_or_else(|| anyhow::anyhow!("Missing 'path' parameter"))?;
        if let Some(cb) = cb {
            cb.on_log(
                task_id.clone(),
                driver_index,
                Some(format!("Barcode path: {}", path)),
            );
            cb.on_progress(task_id.clone(), driver_index, Some(20), None);
        }
        if !file_exists(path) {
            anyhow::bail!("Barcode image not found: {}", path);
        }
        if let Some(cb) = cb {
            cb.on_log(
                task_id.clone(),
                driver_index,
                Some(format!("File verified: {}", path)),
            );
            cb.on_progress(task_id.clone(), driver_index, Some(30), None);
        }
        if let Some(cb) = cb {
            cb.on_log(
                task_id.clone(),
                driver_index,
                Some("Opening and decoding barcode...".to_string()),
            );
            cb.on_progress(task_id.clone(), driver_index, Some(50), None);
        }
        let img = image::open(path).map_err(|e| anyhow::anyhow!("Failed to open image: {}", e))?;
        if let Some(cb) = cb {
            cb.on_log(
                task_id.clone(),
                driver_index,
                Some("Barcode decoding complete (placeholder implementation)".to_string()),
            );
            cb.on_progress(task_id.clone(), driver_index, Some(80), None);
        }
        let content = "123456789012".to_string();
        let result_msg = format!("Barcode content: {}", content);
        if let Some(cb) = cb {
            cb.on_log(
                task_id.clone(),
                driver_index,
                Some(format!("Result: {}", result_msg)),
            );
            cb.on_progress(task_id.clone(), driver_index, Some(100), None);
            cb.on_complete(
                task_id.clone(),
                driver_index,
                Some("barcode_parse".to_string()),
                Some(result_msg.clone()),
            );
        }
        Ok(result_msg)
    }
}
