// Copyright (C) 2021-2022 Soni L.
// SPDX-License-Identifier: MIT OR Apache-2.0

use serde_json::Deserializer as JsonDer;
use serde::Deserialize;

//use datafu::Predicate;

//#[test]
//fn test_basic() {
//    let mut der = JsonDer::from_str(r#"{"foo": 1, "bar": {"baz": 2}}"#);
//    let pat = datafu::PatternBuilder::for_pattern("->[x]:?map->[yk]y").compile().unwrap();
//    #[derive(Deserialize)]
//    struct Values {
//        x: String,
//        yk: String,
//        y: usize,
//    }
//    let matches: Values = pat.deserialize(&mut der).unwrap().collect().unwrap();
//    assert_eq!(matches.x, "bar");
//    assert_eq!(matches.yk, "baz");
//    assert_eq!(matches.y, 2);
//    assert!(der.end().is_ok());
//}

#[test]
fn test_real_use_case() {
    let pat = datafu::PatternBuilder::for_pattern(
        "
        :map
        ->['projects'?]:map
          ->[commit:?str]:?map
            ->[url:?str]:?map
              ->[branch:?str]:?map
                (->['active'?]active:?bool)?
                (->['federate'?]?federate:?bool)?
                (->['pinned'?]?pinned:?bool)?
        "
    ).compile().unwrap();
    let data = r#"
    {"base_url": "https://ganarchy.autistic.space", "repo_list_srcs": {"https://ganarchy.autistic.space/index.toml": {"active": false}}, "projects": {"385e734a52e13949a7a5c71827f6de920dbfea43": {"https://github.com/ganarchy/GAnarchy": {"HEAD": {"active": true}}, "https://soniex2.autistic.space/git-repos/ganarchy.git": {"HEAD": {"active": true, "pinned": true}}}, "a8fb5087f79eafe312db270082c052c427b208c2": {"https://soniex2.autistic.space/git-repos/mmorfc.git": {"HEAD": {"active": true, "pinned": true}}}, "2d0b363fe3179087de59d9ef4a2d14af21d89071": {"https://soniex2.autistic.space/git-repos/chewstuff.git": {"HEAD": {"active": true, "pinned": true}}}}}
    "#;
    let mut der = JsonDer::from_str(data);
    fn always_true() -> bool { true }
    #[derive(Deserialize, PartialEq, Eq, Debug)]
    struct Values {
        commit: String,
        url: String,
        branch: String,
        active: bool,
        #[serde(default="always_true")]
        federate: bool,
        #[serde(default)]
        pinned: bool,
    }
    let graph = pat.deserialize(&mut der).unwrap();
    let matches: Vec<Values> = graph.collect().unwrap();
    assert!(der.end().is_ok());
    assert_eq!(matches.len(), 4);
    assert_eq!(&*matches, &[
        Values {
            commit: "385e734a52e13949a7a5c71827f6de920dbfea43".into(),
            url: "https://github.com/ganarchy/GAnarchy".into(),
            branch: "HEAD".into(),
            active: true,
            federate: true,
            pinned: false,
        },
        Values {
            commit: "385e734a52e13949a7a5c71827f6de920dbfea43".into(),
            url: "https://soniex2.autistic.space/git-repos/ganarchy.git".into(),
            branch: "HEAD".into(),
            active: true,
            federate: true,
            pinned: true,
        },
        Values {
            commit: "a8fb5087f79eafe312db270082c052c427b208c2".into(),
            url: "https://soniex2.autistic.space/git-repos/mmorfc.git".into(),
            branch: "HEAD".into(),
            active: true,
            federate: true,
            pinned: true,
        },
        Values {
            commit: "2d0b363fe3179087de59d9ef4a2d14af21d89071".into(),
            url: "https://soniex2.autistic.space/git-repos/chewstuff.git".into(),
            branch: "HEAD".into(),
            active: true,
            federate: true,
            pinned: true,
        },
    ]);
}

//#[test]
//fn test_str() {
//    //let tree = Value::M(vec![
//    //    ("foo".into(), Value::U(1)),
//    //    ("bar".into(), Value::M(vec![
//    //        ("baz".into(), Value::U(2)),
//    //    ].into_iter().collect())),
//    //].into_iter().collect());
//    let der = JsonDer::from_str(r#"{"foo": 1, "bar": {"baz": 2}}"#)
//    let preds = vec![("dict", Box::new(|v: RefOwn<'_, _, _>| matches!(v, RefOwn::Ref(&Value::M(_)))) as Box<datafu::Predicate<Value>>)].into_iter().collect();
//    let pat = datafu::Pattern::<Value>::compile::<&str, &str>("->X'bar'->Y", Some(preds), None).unwrap();
//    let mut matcher = pat.attempt_match(&tree);
//    let m = matcher.next().unwrap().unwrap();
//    assert_eq!(m["X"].0, RefOwn::Ref(&Value::from("bar")));
//    assert_eq!(m["Y"].0, RefOwn::Ref(&Value::from("baz")));
//    assert_eq!(m["Y"].1, RefOwn::Ref(&Value::U(2)));
//    assert!(matcher.next().is_none());
//}
//
//#[test]
//fn test_basic_2() {
//    let tree = Value::M(vec![
//        ("projects".into(), Value::M(vec![
//            ("385e734a52e13949a7a5c71827f6de920dbfea43".into(), Value::M(vec![
//                ("https://soniex2.autistic.space/git-repos/ganarchy.git".into(), Value::M(vec![
//                    ("HEAD".into(), Value::M(vec![
//                        ("active".into(), Value::B(true)),
//                    ].into_iter().collect())),
//                ].into_iter().collect())),
//            ].into_iter().collect())),
//        ].into_iter().collect())),
//    ].into_iter().collect());
//    let preds = vec![("d", Box::new(|v: RefOwn<'_, _, _>| matches!(v, RefOwn::Ref(&Value::M(_)))) as Box<datafu::Predicate<Value>>)].into_iter().collect();
//    let pat = datafu::Pattern::<Value>::compile::<&str, &str>("->'projects':?$d->P/[0-9a-fA-F]{40}|[0-9a-fA-F]{64}/?:?$d->U:?$d->B", Some(preds), None).unwrap();
//    let mut matcher = pat.attempt_match(&tree);
//    let m = matcher.next().unwrap().unwrap();
//    assert_eq!(m["P"].0, RefOwn::Ref(&Value::from("385e734a52e13949a7a5c71827f6de920dbfea43")));
//    assert_eq!(m["U"].0, RefOwn::Ref(&Value::from("https://soniex2.autistic.space/git-repos/ganarchy.git")));
//    assert_eq!(m["B"].0, RefOwn::Ref(&Value::from("HEAD")));
//    assert_eq!(m["B"].1, RefOwn::Ref(&Value::M(vec![(Value::from("active"), Value::B(true))].into_iter().collect())));
//    assert!(matcher.next().is_none());
//}
//
//#[test]
//fn test_spaces() {
//    let tree = Value::M(vec![
//        ("projects".into(), Value::M(vec![
//            ("385e734a52e13949a7a5c71827f6de920dbfea43".into(), Value::M(vec![
//                ("https://soniex2.autistic.space/git-repos/ganarchy.git".into(), Value::M(vec![
//                    ("HEAD".into(), Value::M(vec![
//                        ("active".into(), Value::B(true)),
//                    ].into_iter().collect())),
//                ].into_iter().collect())),
//            ].into_iter().collect())),
//        ].into_iter().collect())),
//    ].into_iter().collect());
//    let preds = vec![("dict", Box::new(|v: RefOwn<'_, _, _>| matches!(v, RefOwn::Ref(&Value::M(_)))) as Box<datafu::Predicate<Value>>)].into_iter().collect();
//    let pat = datafu::Pattern::<Value>::compile::<_, &str>("
//        -> 'projects'?
//           -> commit /[0-9a-fA-F]{40}|[0-9a-fA-F]{64}/? :?$dict
//              -> url :?$dict
//                 -> branch :?$dict",
//        Some(preds),
//        None,
//    ).unwrap();
//    let mut matcher = pat.attempt_match(&tree);
//    let m = matcher.next().unwrap().unwrap();
//    assert_eq!(m["commit"].0, RefOwn::Ref(&Value::from("385e734a52e13949a7a5c71827f6de920dbfea43")));
//    assert_eq!(m["url"].0, RefOwn::Ref(&Value::from("https://soniex2.autistic.space/git-repos/ganarchy.git")));
//    assert_eq!(m["branch"].0, RefOwn::Ref(&Value::from("HEAD")));
//    assert_eq!(m["branch"].1, RefOwn::Ref(&Value::M(vec![(Value::from("active"), Value::B(true))].into_iter().collect())));
//    assert!(matcher.next().is_none());
//}
//
//#[test]
//fn test_harder() {
//    let tree = Value::M(vec![
//        ("projects".into(), Value::M(vec![
//            ("385e734a52e13949a7a5c71827f6de920dbfea43".into(), Value::M(vec![
//                ("https://soniex2.autistic.space/git-repos/ganarchy.git".into(), Value::M(vec![
//                    ("HEAD".into(), Value::M(vec![
//                        ("active".into(), Value::B(true)),
//                    ].into_iter().collect())),
//                ].into_iter().collect())),
//            ].into_iter().collect())),
//        ].into_iter().collect())),
//    ].into_iter().collect());
//    let preds = vec![
//        ("dict", Box::new(|v: RefOwn<'_, _, _>| matches!(v, RefOwn::Ref(&Value::M(_)))) as Box<datafu::Predicate<Value>>),
//        ("str", Box::new(|v: RefOwn<'_, _, _>| matches!(v, RefOwn::Ref(&Value::S(_)))) as Box<datafu::Predicate<Value>>),
//        ("bool", Box::new(|v: RefOwn<'_, _, _>| matches!(v, RefOwn::Ref(&Value::B(_)))) as Box<datafu::Predicate<Value>>),
//        // stubs, we don't particularly need to test these
//        ("commit", Box::new(|v: RefOwn<'_, _, _>| matches!(v, RefOwn::Ref(&Value::S(_)))) as Box<datafu::Predicate<Value>>),
//        ("uri", Box::new(|v: RefOwn<'_, _, _>| matches!(v, RefOwn::Ref(&Value::S(_)))) as Box<datafu::Predicate<Value>>),
//    ].into_iter().collect();
//    let pat = datafu::Pattern::<Value>::compile::<_, &str>("
//        ->'projects':$dict
//          ->commit[:?$str:?$commit]:?$dict
//            ->url[:?$str:?$uri]:?$dict
//              ->branch:?$dict
//                (->active'active'?:?$bool)
//                (->federate'federate'?:?$bool)?",
//        Some(preds),
//        None,
//    ).unwrap();
//    let mut matcher = pat.attempt_match(&tree);
//    let m = matcher.next().unwrap().unwrap();
//    assert_eq!(m["commit"].0, RefOwn::Ref(&Value::from("385e734a52e13949a7a5c71827f6de920dbfea43")));
//    assert_eq!(m["url"].0, RefOwn::Ref(&Value::from("https://soniex2.autistic.space/git-repos/ganarchy.git")));
//    assert_eq!(m["branch"].0, RefOwn::Ref(&Value::from("HEAD")));
//    assert_eq!(m["active"].1, RefOwn::Ref(&Value::B(true)));
//    assert_eq!(m.get("federate"), None);
//    assert!(matcher.next().is_none());
//}