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gobang/src/utils.rs

102 lines
3.6 KiB
Rust

use crate::app::{Database, Table};
use chrono::NaiveDate;
use futures::TryStreamExt;
use sqlx::mysql::MySqlPool;
use sqlx::{Column, Executor, Row, TypeInfo};
pub async fn get_databases(pool: &MySqlPool) -> anyhow::Result<Vec<Database>> {
let databases = sqlx::query("show databases")
.fetch_all(pool)
.await?
.iter()
.map(|table| table.get(0))
.collect::<Vec<String>>();
let mut list = vec![];
for db in databases {
list.push(Database::new(db, pool).await?)
}
Ok(list)
}
pub async fn get_tables(database: String, pool: &MySqlPool) -> anyhow::Result<Vec<Table>> {
let tables = sqlx::query(format!("show tables from `{}`", database).as_str())
.fetch_all(pool)
.await?
.iter()
.map(|table| Table { name: table.get(0) })
.collect::<Vec<Table>>();
Ok(tables)
}
pub async fn get_records(
database: &Database,
table: &Table,
pool: &MySqlPool,
) -> anyhow::Result<(Vec<String>, Vec<Vec<String>>)> {
pool.execute(format!("use `{}`", database.name).as_str())
.await?;
let table_name = format!("SELECT * FROM `{}`", table.name);
let mut rows = sqlx::query(table_name.as_str()).fetch(pool);
let headers = sqlx::query(format!("desc `{}`", table.name).as_str())
.fetch_all(pool)
.await?
.iter()
.map(|table| table.get(0))
.collect::<Vec<String>>();
let mut records = vec![];
while let Some(row) = rows.try_next().await? {
let mut row_vec = vec![];
for col in row.columns() {
let col_name = col.name();
match col.type_info().clone().name() {
"INT" | "DECIMAL" | "SMALLINT" => match row.try_get(col_name) {
Ok(value) => {
let value: i64 = value;
row_vec.push(value.to_string())
}
Err(_) => row_vec.push("".to_string()),
},
"INT UNSIGNED" => match row.try_get(col_name) {
Ok(value) => {
let value: u64 = value;
row_vec.push(value.to_string())
}
Err(_) => row_vec.push("".to_string()),
},
"VARCHAR" | "CHAR" => {
let value: String = row.try_get(col_name).unwrap_or("".to_string());
row_vec.push(value);
}
"DATE" => match row.try_get(col_name) {
Ok(value) => {
let value: NaiveDate = value;
row_vec.push(value.to_string())
}
Err(_) => row_vec.push("".to_string()),
},
"TIMESTAMP" => match row.try_get(col_name) {
Ok(value) => {
let value: chrono::DateTime<chrono::Utc> = value;
row_vec.push(value.to_string())
}
Err(_) => row_vec.push("".to_string()),
},
"BOOLEAN" => match row.try_get(col_name) {
Ok(value) => {
let value: bool = value;
row_vec.push(value.to_string())
}
Err(_) => row_vec.push("".to_string()),
},
"ENUM" => {
let value: String = row.try_get(col_name).unwrap_or("".to_string());
row_vec.push(value);
}
_ => (),
}
}
records.push(row_vec)
}
Ok((headers, records))
}