mod app;
mod args;
mod error;
mod navigator;
mod rdf;
mod theme;
mod widget;
mod tasks;

use std::collections::HashMap;
use crate::app::Publisher;
use crate::args::{AppArgs, Command};
use clap::Parser;
use gl_search::{Schema, SearchIndex};
use iced::futures::StreamExt;
use ldp::middleware::BasicAuthMiddleware;
use ldp::reqwest::Client;
use ldp::reqwest_middleware::ClientBuilder;
use ldp::traverse::Traverse;
use oxigraph::io::{RdfFormat, RdfParser, RdfSerializer};
use oxigraph::model::{Dataset, Graph, Triple, TripleRef};
use tracing::{debug_span, error, field, Instrument};
use tracing_subscriber::fmt::format::FmtSpan;
use tracing_subscriber::layer::SubscriberExt;
use tracing_subscriber::util::SubscriberInitExt;
use tracing_subscriber::{EnvFilter, fmt};
use url::Url;
use gl_graph::indexer::Indexer;
use gl_graph::{language, CurieHelper, vocab};
use gl_graph::ontology::{OntologyBuilder, ResourceSelector};
use gl_inference::proto::ontology_client::OntologyClient;
use gl_inference::proto::OntologyQueryRequest;

fn main() -> color_eyre::Result<()> {
    let appender = tracing_appender::rolling::never("/tmp", "publisher-log");
    tracing_subscriber::registry()
        .with(
            fmt::layer()
                .with_span_events(FmtSpan::CLOSE)
                .with_writer(appender),
        )
        .with(EnvFilter::from_default_env())
        .init();
    color_eyre::install()?;

    let args = AppArgs::parse();
    match args.command {
        Some(Command::Query(args)) => {
            let raw_query = if let Some(query) = &args.query_path {
                Some(String::from_utf8(std::fs::read(query)?)?)
            } else { None };

            let graph = if let Some(dataset_path) = &args.dataset_path {
                Some(String::from_utf8(std::fs::read(dataset_path)?)?)
            } else { None };

            let mut request = OntologyQueryRequest::default();
            request.sparql_query = raw_query;
            request.turtle = graph;
            request.prefixes = HashMap::from_iter(gl_graph::PREFIXES.iter().map(|(name, iri)| (name.clone(), iri.clone())));
            request.base = args.base.clone();
            request.inferences_only = args.inferences_only;

            let runtime = tokio::runtime::Builder::new_multi_thread()
                .enable_all()
                .name("inference-client")
                .build()?;

            runtime.block_on(async {
                let mut client = OntologyClient::connect("http://[::1]:3000")
                    .await
                    .unwrap()
                    .max_decoding_message_size(1024 * 1024 * 1024);

                let response = client.query(request).await.unwrap();
                println!("{}", response.get_ref().results);
            });
        }
        Some(Command::Search(args)) => {
            let mut index = SearchIndex::builder()
                .with_path("/home/alex/.local/share/org.graphofliberty.desktop/index")
                .build()
                .expect("Failed to build search index");

            let limit = args.limit.unwrap_or(5);
            for document in index.query(args.discriminant, &args.query, Schema::all_fields(), limit)? {
                println!("{}", gl_search::to_json(document));
            }
        }
        Some(Command::Reindex) => {
            let mut index = SearchIndex::builder()
                .with_path("/home/alex/.local/share/org.graphofliberty.desktop/index")
                .build()
                .expect("Failed to build search index");

            let mut writer = index.writer()?;
            debug_span!("Clear Index").in_scope(|| {
                writer.delete_all_documents()?;
                writer.commit()
            })?;

            let runtime = tokio::runtime::Builder::new_multi_thread()
                .enable_all()
                .name("reindex")
                .build()?;

            runtime.block_on(async {
                let curie_helper = CurieHelper::new(gl_graph::PREFIXES.clone());
                let indexer = Indexer::new(language::ENGLISH_OR_UNTAGGED.clone(), &curie_helper);

                let mut client = OntologyBuilder::from_string("http://[::1]:3000", language::ENGLISH_OR_UNTAGGED.clone())?
                    .connect()
                    .await?;
                let resource_descriptions = client.resource_descriptions(ResourceSelector::Classes, [
                    vocab::rdf::PROPERTY.into_owned(),
                    vocab::rdfs::CLASS.into_owned(),
                    vocab::skos::CONCEPT.into_owned(),
                ]).await?;
                let documents = indexer.ontology(resource_descriptions);
                debug_span!("Index Ontology", documents = field::Empty).in_scope(|| {
                    for document in documents {
                        writer.add_document(document).unwrap();
                    }
                });
                Ok::<_, crate::error::Error>(())
            })?;

            let mut writer = runtime.block_on(async move {
                let http_client = ClientBuilder::new(Client::new())
                    .with(BasicAuthMiddleware::new(
                        "fedoraAdmin".to_string(),
                        Some("fedoraAdmin".to_string()),
                    ))
                    .build();

                let starting_url = Url::parse("http://fedora.quill.lan/rest/")?;
                let mut graph = Graph::new();
                let mut traversal = Traverse::new(http_client, starting_url, None);
                let mut rdf_source_count = 0usize;
                while let Some(result) = traversal.next().await {
                    match result {
                        Ok(rdf_source) => {
                            let triples = rdf_source.dataset()
                                .iter()
                                .map(|quad| TripleRef::from(quad));
                            graph.extend(triples);
                            rdf_source_count += 1;
                        },
                        Err(err) => error!(?err),
                    }
                }

                let span = debug_span!("Index Repository", rdf_sources = rdf_source_count, triples = field::Empty, documents = field::Empty);
                let triple_count = async {
                    let curie_helper = CurieHelper::new(gl_graph::PREFIXES.clone());
                    let indexer = Indexer::new(language::ENGLISH_OR_UNTAGGED.clone(), &curie_helper);

                    let mut client = OntologyBuilder::from_string("http://[::1]:3000", language::ENGLISH_OR_UNTAGGED.clone())?
                        .connect()
                        .await?;

                    let graph_with_inferences = client.run_inference(&graph).await?;
                    for document in indexer.graph(&graph_with_inferences) {
                        writer.add_document(document)?;
                    }

                    Ok::<usize, crate::error::Error>(graph_with_inferences.len())
                }.instrument(span.clone()).await?;
                span.record("triples", triple_count);

                Ok::<_, crate::error::Error>(writer)
            })?;

            debug_span!("Commit").in_scope(|| writer.commit())?;
        }
        None => {
            iced::daemon(Publisher::new, Publisher::update, Publisher::view)
                .title(Publisher::title)
                .subscription(Publisher::subscription)
                .run()?;
        }
    }

    Ok(())
}