use arbitrary::Arbitrary;
use std::io::Read;

use flate2::read::GzDecoder;
use serde_json::Value;

#[derive(Arbitrary)]
pub struct TextAction {
    pub pos: usize,
    pub ins: String,
    pub del: usize,
}

pub fn get_automerge_actions() -> Vec<TextAction> {
    const RAW_DATA: &[u8; 901823] = include_bytes!("./automerge-paper.json.gz");
    let mut actions = Vec::new();
    let mut d = GzDecoder::new(&RAW_DATA[..]);
    let mut s = String::new();
    d.read_to_string(&mut s).unwrap();
    let json: Value = serde_json::from_str(&s).unwrap();
    let txns = json.as_object().unwrap().get("txns");
    for txn in txns.unwrap().as_array().unwrap() {
        let patches = txn
            .as_object()
            .unwrap()
            .get("patches")
            .unwrap()
            .as_array()
            .unwrap();
        for patch in patches {
            let pos = patch[0].as_u64().unwrap() as usize;
            let del_here = patch[1].as_u64().unwrap() as usize;
            let ins_content = patch[2].as_str().unwrap();
            actions.push(TextAction {
                pos,
                ins: ins_content.to_string(),
                del: del_here,
            });
        }
    }
    actions
}