86 lines
2.5 KiB
Rust
86 lines
2.5 KiB
Rust
use chrono::{DateTime, Utc};
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use serde::Serialize;
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use serde_json::{json, Value};
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use uuid::Uuid;
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use super::utils::get_ipfs_url;
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const IPFS_LOGO: &str = "bafybeihc4hti5ix4ds2tefhy35qd4c7n5as5cazdmksrxj7ipvcxm64h54";
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/// ERC-721 custom attribute as defined by OpenSea guidelines.
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#[derive(Serialize)]
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struct Attribute {
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trait_type: String,
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value: Value,
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display_type: String,
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}
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/// JSON representation of a post. Compatible with ERC-721 metadata standard.
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/// https://docs.opensea.io/docs/metadata-standards
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#[derive(Serialize)]
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pub struct PostMetadata {
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// Fields required by ERC-721
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name: String,
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description: String,
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image: String,
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// OpenSea custom fields
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external_url: String,
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attributes: Vec<Attribute>,
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}
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impl PostMetadata {
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pub fn new(
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post_id: &Uuid,
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post_url: &str,
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content: &str,
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created_at: &DateTime<Utc>,
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image_cid: Option<&str>,
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) -> Self {
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// Use IPFS logo if there's no image
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let image_cid = image_cid.unwrap_or(IPFS_LOGO);
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let created_at_attr = Attribute {
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trait_type: "Created at".to_string(),
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value: json!(created_at.timestamp()),
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display_type: "date".to_string(),
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};
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Self {
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name: format!("Post {}", post_id),
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description: content.to_string(),
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image: get_ipfs_url(image_cid),
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external_url: post_url.to_string(),
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attributes: vec![created_at_attr],
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use fedimovies_models::posts::types::Post;
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#[test]
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fn test_create_post_metadata() {
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let post = Post {
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content: "test".to_string(),
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..Default::default()
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};
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let post_url = "https://example.com/objects/1";
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let image_cid = "bafybeihc4hti5ix4ds2tefhy35qd4c7n5as5cazdmksrxj7ipvcxm64h54";
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let post_metadata = PostMetadata::new(
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&post.id,
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post_url,
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&post.content,
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&post.created_at,
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Some(image_cid),
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);
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assert_eq!(post_metadata.name, format!("Post {}", post.id));
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assert_eq!(post_metadata.description, post.content);
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assert_eq!(post_metadata.image, format!("ipfs://{}", image_cid));
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assert_eq!(post_metadata.external_url, post_url);
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let created_at_attr = &post_metadata.attributes[0];
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assert_eq!(created_at_attr.display_type, "date");
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assert!(created_at_attr.value.as_i64().is_some());
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}
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}
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