src/commands/modification.rs


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use std::io::{Error, ErrorKind};

use crate::{modrinth::{project, versions, extract_current_version}, config::Cfg, db::{mods_insert, userlist_remove, mods_get_id, userlist_insert, mods_get_all_ids, userlist_get_all_ids}, input::{Input, Subcmd}, get_current_list, download_versions};

pub async fn modification(config: Cfg, input: Input) -> Result<(), Box<dyn std::error::Error>> {
    
    match input.subcommand.as_ref().ok_or("")? {
        Subcmd::Add => {
            add(config, input).await
        },
        Subcmd::Remove => {
            remove(config, input.args.ok_or("")?)
        },
        _ => Err(Box::new(Error::new(ErrorKind::InvalidInput, "SUBCOMMAND_NOT_AVAILABLE")))
    }
}

async fn add(config: Cfg, input: Input) -> Result<(), Box<dyn std::error::Error>> {

    let args = input.args.ok_or("")?;

    if args.is_empty() { return Err(Box::new(Error::new(ErrorKind::InvalidInput, "TOO_FEW_ARGUMENTS"))); };
    
    let current_list = get_current_list(config.clone())?;

    let project = project(String::from(&config.apis.modrinth), &args[0]).await;

    let available_versions = versions(String::from(&config.apis.modrinth), String::from(&project.id), current_list.clone()).await;
    
    let current_id = extract_current_version(available_versions.clone())?;

    let current_version = available_versions.clone().into_iter().find(|v| v.id == current_id).unwrap();

    let file = current_version.clone().files.into_iter().find(|f| f.primary).unwrap().url;
    
    let mut available_versions_vec: Vec<String> = Vec::new();
    for ver in available_versions {
        available_versions_vec.push(ver.id);
    }
    //add to current list and mod table
    match userlist_get_all_ids(config.clone(), current_list.clone().id) {
        Ok(mods) => {
            if mods.contains(&project.id) {
                return Err(Box::new(Error::new(ErrorKind::Other, "MOD_ALREADY_ON_LIST"))); } 
            else {
                userlist_insert(config.clone(), String::from(&current_list.id), String::from(&project.id), String::from(&current_version.id), available_versions_vec, file)?;
            } 
        },
        Err(..) => userlist_insert(config.clone(), String::from(&current_list.id), String::from(&project.id), String::from(&current_version.id), available_versions_vec, file)?,
    };
    
    match mods_get_all_ids(config.clone()) {
        Ok(mods) => {
            if mods.contains(&project.id) {
                //return Err(Box::new(Error::new(ErrorKind::Other, "MOD_ALREADY_IN_DATABASE")))
            } else {
                mods_insert(config.clone(), String::from(&project.id), String::from(&project.title), project.versions)?;
            } 
        },
        Err(..) => {
            mods_insert(config.clone(), String::from(&project.id), String::from(&project.title), project.versions)?;
        },
    };
    
    if !input.disable_download { download_versions(current_list, vec![current_version]).await?; }

    Ok(())
}

fn remove(config: Cfg, args: Vec<String>) -> Result<(), Box<dyn std::error::Error>> {
    if args.is_empty() { return Err(Box::new(Error::new(ErrorKind::InvalidInput, "TOO_FEW_ARGUMENTS"))); };

    let current_list = get_current_list(config.clone())?;
    let mod_id = mods_get_id(config.clone(), String::from(&args[0]))?;
    
    //TODO implement remove from modlist if not in any other lists && config clean is true
    userlist_remove(config, current_list.id, mod_id)
}