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/*
    This file is part of jellything (https://codeberg.org/metamuffin/jellything)
    which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
    Copyright (C) 2023 metamuffin <metamuffin.org>
*/
#![feature(file_create_new)]

pub mod import;
pub mod migrate;

use base64::Engine;
use clap::{Parser, Subcommand, ValueEnum};
use import::import;
use jellycommon::{config::GlobalConfig, Node, NodeKind, NodePrivate, NodePublic};
use log::{info, warn};
use migrate::migrate;
use rand::random;
use std::{fmt::Debug, fs::File, io::Write, path::PathBuf};

#[derive(Parser)]
struct Args {
    #[arg(short = 'N', long)]
    dry: bool,
    #[clap(subcommand)]
    action: Action,
}

#[derive(Subcommand)]
enum Action {
    /// Initialize a new jellything instance
    Init {
        /// Base path of the instance, must either be absolute or relative to the servers pwd
        base_path: PathBuf,
        #[arg(short, long)]
        brand: String,
        #[arg(short, long)]
        hostname: String,
    },
    /// Imports a movie, video or series given media and metadata sources
    New {
        /// Relative path to the node's parent(!).
        path: PathBuf,
        /// Search the node by title on TMDB
        #[arg(short = 't', long)]
        tmdb_search: Option<String>,
        /// Search the node by id on TMDB
        #[arg(short = 'T', long)]
        tmdb_id: Option<String>,
        #[arg(long)]
        /// Prefix the inferred id with something to avoid collisions
        ident_prefix: Option<String>,
        /// Copies media into the library
        #[arg(long)]
        copy: bool,
        /// Moves media into the library (potentially destructive operation)
        #[arg(long)]
        r#move: bool,
        /// Marks node as a video
        #[arg(long)]
        video: bool,
        /// Path to the media of the node, required for non-series
        #[arg(short, long)]
        input: Option<PathBuf>,
        /// Marks node as a series
        #[arg(short, long)]
        series: bool,
        /// Ignore attachments (dont use them as cover)
        #[arg(long)]
        ignore_attachments: bool,
    },
    Migrate {
        database: PathBuf,
        mode: MigrateMode,
        save_location: PathBuf,
    },
}

#[derive(Debug, Clone, Copy, PartialEq, ValueEnum)]
enum MigrateMode {
    Import,
    Export,
}

fn main() -> anyhow::Result<()> {
    env_logger::builder()
        .filter_level(log::LevelFilter::Info)
        .parse_env("LOG")
        .init();
    let args = Args::parse();

    match args.action {
        Action::Init {
            base_path: path,
            brand,
            hostname,
        } => {
            info!("creating new instance...");
            std::fs::create_dir_all(path.join("library"))?;
            std::fs::create_dir_all(path.join("cache"))?;
            std::fs::create_dir_all(path.join("assets"))?;
            File::create_new(path.join("assets/front.htm"))?
                .write_fmt(format_args!("<h1>My very own jellything instance</h1>"))?;
            serde_yaml::to_writer(
                File::create_new(path.join("config.yaml"))?,
                &GlobalConfig {
                    brand: brand.clone(),
                    hostname,
                    slogan: "Creative slogan here".to_string(),
                    asset_path: path.join("assets"),
                    cache_path: path.join("cache"),
                    library_path: path.join("library"),
                    database_path: path.join("database"),
                    temp_path: "/tmp".into(),
                    cookie_key: Some(
                        base64::engine::general_purpose::STANDARD
                            .encode([(); 32].map(|_| random())),
                    ),
                    session_key: Some(
                        base64::engine::general_purpose::STANDARD
                            .encode([(); 32].map(|_| random())),
                    ),
                    admin_username: "admin".to_string(),
                    admin_password: "hackme".to_string(),
                    login_expire: 10,
                    ..Default::default()
                },
            )?;
            serde_json::to_writer(
                File::create_new(path.join("library/directory.json"))?,
                &Node {
                    public: NodePublic {
                        kind: NodeKind::Collection,
                        title: "My Library".to_string(),
                        ..Default::default()
                    },
                    private: NodePrivate {
                        ..Default::default()
                    },
                },
            )?;
            info!("{brand:?} is ready!");
            warn!("please change the admin password.");
            Ok(())
        }
        a @ Action::New { .. } => import(a, args.dry),
        a @ Action::Migrate { .. } => migrate(a),
    }
}

fn make_ident(s: &str) -> String {
    let mut out = String::new();
    for s in s.chars() {
        match s {
            'a'..='z' | '0'..='9' => out.push(s),
            'A'..='Z' => out.push(s.to_ascii_lowercase()),
            '-' | ' ' | '_' | ':' => out.push('-'),
            _ => (),
        }
    }
    out
}

fn ok_or_warn<T, E: Debug>(r: Result<T, E>) -> Option<T> {
    match r {
        Ok(t) => Some(t),
        Err(e) => {
            warn!("{e:?}");
            None
        }
    }
}