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use crate::error::ArtifactError;
use crate::models::a2a::{DataPart, FileContent, FilePart, Part, TextPart};
use serde_json::Value as JsonValue;
pub fn build_parts(artifact: &JsonValue) -> Result<Vec<Part>, ArtifactError> {
let mut parts = Vec::new();
if let Some(obj) = artifact.as_object() {
parts.push(Part::Data(DataPart { data: obj.clone() }));
return Ok(parts);
}
if let Some(content) = artifact.get("content") {
if let Some(arr) = content.as_array() {
for item in arr {
if let Some(content_type) = item.get("type").and_then(|t| t.as_str()) {
match content_type {
"text" => {
if let Some(text) = item.get("text").and_then(|t| t.as_str()) {
parts.push(Part::Text(TextPart {
text: text.to_string(),
}));
}
},
"image" => {
if let Some(data) = item.get("data").and_then(|d| d.as_str()) {
let mime_type = item
.get("mimeType")
.and_then(|m| m.as_str())
.map(ToString::to_string);
parts.push(Part::File(FilePart {
file: FileContent {
bytes: Some(data.to_string()),
mime_type,
name: None,
url: None,
},
}));
}
},
"resource" => {
if let Some(uri) = item.get("uri").and_then(|u| u.as_str()) {
let mime_type = item
.get("mimeType")
.and_then(|m| m.as_str())
.map(ToString::to_string);
parts.push(Part::File(FilePart {
file: FileContent {
name: Some(uri.to_string()),
mime_type,
bytes: None,
url: None,
},
}));
}
},
_ => {},
}
}
}
if !parts.is_empty() {
return Ok(parts);
}
}
}
Err(ArtifactError::Transform(format!(
"Artifact must be an object or contain a 'content' array. Received: {}",
serde_json::to_string_pretty(artifact).unwrap_or_else(|_| "invalid JSON".to_string())
)))
}