headless_lms_server/domain/csv_export/
code_giveaway_codes.rs

1use anyhow::Result;
2use bytes::Bytes;
3
4use futures::TryStreamExt;
5use headless_lms_models::code_giveaway_codes;
6
7use async_trait::async_trait;
8
9use crate::domain::csv_export::CsvWriter;
10
11use sqlx::PgConnection;
12use std::io::Write;
13use tokio::sync::mpsc::UnboundedSender;
14
15use uuid::Uuid;
16
17use crate::prelude::*;
18
19use super::{
20    super::authorization::{AuthorizationToken, AuthorizedResponse},
21    CSVExportAdapter, CsvExportDataLoader,
22};
23
24pub struct CodeGiveawayCodesExportOperation {
25    pub code_giveaway_id: Uuid,
26}
27
28#[async_trait]
29impl CsvExportDataLoader for CodeGiveawayCodesExportOperation {
30    async fn load_data(
31        &self,
32        sender: UnboundedSender<Result<AuthorizedResponse<Bytes>, ControllerError>>,
33        conn: &mut PgConnection,
34        token: AuthorizationToken,
35    ) -> anyhow::Result<CSVExportAdapter> {
36        export_code_giveaway_codes(
37            &mut *conn,
38            self.code_giveaway_id,
39            CSVExportAdapter {
40                sender,
41                authorization_token: token,
42            },
43        )
44        .await
45    }
46}
47
48/// Writes giveaway codes as csv into the writer
49pub async fn export_code_giveaway_codes<W>(
50    conn: &mut PgConnection,
51    code_giveaway_id: Uuid,
52    writer: W,
53) -> Result<W>
54where
55    W: Write + Send + 'static,
56{
57    let headers = IntoIterator::into_iter([
58        "id".to_string(),
59        "created_at".to_string(),
60        "updated_at".to_string(),
61        "code_giveaway_id".to_string(),
62        "code_given_to_user_id".to_string(),
63        "added_by_user_id".to_string(),
64        "code".to_string(),
65    ]);
66
67    let mut stream =
68        code_giveaway_codes::stream_given_code_giveaway_codes(conn, code_giveaway_id).await;
69
70    let writer = CsvWriter::new_with_initialized_headers(writer, headers).await?;
71    while let Some(next) = stream.try_next().await? {
72        let csv_row = vec![
73            next.id.to_string(),
74            next.created_at.to_rfc3339(),
75            next.updated_at.to_rfc3339(),
76            next.code_giveaway_id.to_string(),
77            next.code_given_to_user_id
78                .map(|o| o.to_string())
79                .unwrap_or("".to_string()),
80            next.added_by_user_id.to_string(),
81            next.code.to_string(),
82        ];
83        writer.write_record(csv_row);
84    }
85    let writer = writer.finish().await?;
86    Ok(writer)
87}
headless_lms_server/domain/csv_export/code_giveaway_codes.rs

headless_lms_server/domain/csv_export/
code_giveaway_codes.rs
