use crate::{
DriverCallback, DriverCategory, DriverContext,
types::{Driver, DriverParameter},
};
use anyhow::Result;
use image::{ImageBuffer, Rgb};
use serde_json::{Value, json};
use std::collections::HashMap;
#[derive(Debug)]
pub struct BarcodeGenerateDriver;
#[async_trait::async_trait]
impl Driver for BarcodeGenerateDriver {
fn name(&self) -> &str {
"barcode_generate"
}
fn description(&self) -> &str {
"Generate a barcode (Code128, EAN-13, etc.)"
}
fn usage_hint(&self) -> &str {
"Use this skill to create barcodes for product codes, ISBN, etc."
}
fn parameters(&self) -> Vec<DriverParameter> {
vec![
DriverParameter {
name: "content".to_string(),
param_type: "string".to_string(),
description: "Content to encode in the barcode".to_string(),
required: true,
default: None,
example: Some(Value::String("123456789012".to_string())),
enum_values: None,
},
DriverParameter {
name: "destination".to_string(),
param_type: "string".to_string(),
description: "Output file path (PNG format)".to_string(),
required: true,
default: None,
example: Some(Value::String("/path/to/barcode.png".to_string())),
enum_values: None,
},
DriverParameter {
name: "barcode_type".to_string(),
param_type: "string".to_string(),
description: "Barcode type: code128, ean13, upca, code39".to_string(),
required: false,
default: Some(Value::String("code128".to_string())),
example: Some(Value::String("ean13".to_string())),
enum_values: Some(vec![
"code128".to_string(),
"ean13".to_string(),
"upca".to_string(),
"code39".to_string(),
]),
},
DriverParameter {
name: "height".to_string(),
param_type: "integer".to_string(),
description: "Height of barcode in pixels".to_string(),
required: false,
default: Some(Value::Number(80.into())),
example: Some(Value::Number(120.into())),
enum_values: None,
},
]
}
fn example_call(&self) -> Value {
json!({
"action": "barcode_generate",
"parameters": {
"content": "9781234567897",
"destination": "/output/barcode.png",
"barcode_type": "ean13"
}
})
}
fn example_output(&self) -> String {
"Barcode generated successfully at /output/barcode.png".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 generation".to_string()),
);
cb.on_progress(task_id.clone(), driver_index, Some(10), None);
}
let content = parameters
.get("content")
.and_then(|v| v.as_str())
.ok_or_else(|| anyhow::anyhow!("Missing 'content' parameter"))?;
let destination = parameters
.get("destination")
.and_then(|v| v.as_str())
.ok_or_else(|| anyhow::anyhow!("Missing 'destination' parameter"))?;
let barcode_type = parameters
.get("barcode_type")
.and_then(|v| v.as_str())
.unwrap_or("code128");
let height = parameters
.get("height")
.and_then(|v| v.as_u64())
.unwrap_or(80) as u32;
if let Some(cb) = cb {
cb.on_log(
task_id.clone(),
driver_index,
Some(format!(
"Content: {}, type: {}, height: {}",
content, barcode_type, height
)),
);
cb.on_progress(task_id.clone(), driver_index, Some(20), None);
}
if let Some(cb) = cb {
cb.on_log(
task_id.clone(),
driver_index,
Some("Encoding barcode...".to_string()),
);
cb.on_progress(task_id.clone(), driver_index, Some(40), None);
}
let encoded = match barcode_type {
"code128" => {
use barcoders::sym::code128::Code128;
let encoder = Code128::new(content)
.map_err(|e| anyhow::anyhow!("Failed to create Code128: {}", e))?;
encoder.encode()
}
"ean13" => {
use barcoders::sym::ean13::EAN13;
let encoder = EAN13::new(content)
.map_err(|e| anyhow::anyhow!("Failed to create EAN13: {}", e))?;
encoder.encode()
}
"code39" => {
use barcoders::sym::code39::Code39;
let encoder = Code39::new(content)
.map_err(|e| anyhow::anyhow!("Failed to create Code39: {}", e))?;
encoder.encode()
}
_ => anyhow::bail!("Unsupported barcode type: {}", barcode_type),
};
let width = encoded.len() as u32;
if let Some(cb) = cb {
cb.on_log(
task_id.clone(),
driver_index,
Some(format!("Encoded length: {} modules", width)),
);
cb.on_progress(task_id.clone(), driver_index, Some(60), None);
}
let module_width = 2;
let image_width = width * module_width;
let mut image: ImageBuffer<Rgb<u8>, Vec<u8>> = ImageBuffer::new(image_width, height);
for pixel in image.pixels_mut() {
*pixel = Rgb([255, 255, 255]);
}
if let Some(cb) = cb {
cb.on_log(
task_id.clone(),
driver_index,
Some("Rendering barcode image...".to_string()),
);
cb.on_progress(task_id.clone(), driver_index, Some(75), None);
}
for (i, &bit) in encoded.iter().enumerate() {
if bit == 1 {
let i_usize = i as u32;
for y in 0..height {
for x in 0..module_width {
image.put_pixel((i_usize * module_width) + x, y, Rgb([0, 0, 0]));
}
}
}
}
if let Some(cb) = cb {
cb.on_log(
task_id.clone(),
driver_index,
Some("Saving barcode...".to_string()),
);
cb.on_progress(task_id.clone(), driver_index, Some(90), None);
}
image
.save(destination)
.map_err(|e| anyhow::anyhow!("Failed to save barcode: {}", e))?;
let result_msg = format!("Barcode generated successfully at {}", destination);
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_generate".to_string()),
Some(result_msg.clone()),
);
}
Ok(result_msg)
}
}