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use anyhow::{anyhow, Context, Result};
use redis::AsyncCommands;
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::fs::File;
#[derive(Default, Serialize, Deserialize)]
struct PyindieblogData {
posts: Vec<serde_json::Value>,
cards: Vec<serde_json::Value>,
}
#[async_std::main]
async fn main() -> Result<()> {
let mut args = std::env::args();
args.next(); // skip argv[0] which is the name
let redis_uri = args
.next()
.ok_or_else(|| anyhow!("No Redis URI provided"))?;
let client = redis::Client::open(redis_uri.as_str())
.with_context(|| format!("Failed to construct Redis client on {}", redis_uri))?;
let filename = args
.next()
.ok_or_else(|| anyhow!("No filename provided for export"))?;
let mut data: Vec<serde_json::Value>;
let file = File::create(filename)?;
let mut conn = client
.get_async_std_connection()
.await
.with_context(|| "Failed to connect to the Redis server")?;
data = conn
.hgetall::<&str, HashMap<String, String>>("posts")
.await?
.values()
.map(|s| {
serde_json::from_str::<serde_json::Value>(s)
.with_context(|| format!("Failed to parse the following entry: {:?}", s))
})
.collect::<std::result::Result<Vec<serde_json::Value>, anyhow::Error>>()
.with_context(|| "Failed to export h-entries from pyindieblog")?;
data.extend(
conn.hgetall::<&str, HashMap<String, String>>("hcards")
.await?
.values()
.map(|s| {
serde_json::from_str::<serde_json::Value>(s)
.with_context(|| format!("Failed to parse the following card: {:?}", s))
})
.collect::<std::result::Result<Vec<serde_json::Value>, anyhow::Error>>()
.with_context(|| "Failed to export h-cards from pyindieblog")?,
);
data.sort_by_key(|v| {
v["properties"]["published"][0]
.as_str()
.map(|s| s.to_string())
});
serde_json::to_writer(file, &data)?;
Ok(())
}
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