//! Run once against the frozen schema-6 library, never regenerate with schema7.
use oa_core::{source_project::*, *};
use serde::Serialize;
use serde::ser::{SerializeStruct, Serializer};
use std::{collections::BTreeSet, fs, path::Path};
struct Project5<'a>(&'a Project);
struct Diagram5<'a>(&'a Diagram);
impl Serialize for Project5<'_> {
    fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
        let p = self.0;
        let diagrams: std::collections::BTreeMap<_, _> =
            p.diagrams.iter().map(|(id, d)| (id, Diagram5(d))).collect();
        let mut s = serializer.serialize_struct("Project", 10)?;
        s.serialize_field("schema_version", &5u32)?;
        s.serialize_field("id", &p.id)?;
        s.serialize_field("alias", &p.alias)?;
        s.serialize_field("name", &p.name)?;
        s.serialize_field("description", &p.description)?;
        s.serialize_field("elements", &p.elements)?;
        s.serialize_field("relations", &p.relations)?;
        s.serialize_field("diagrams", &diagrams)?;
        s.serialize_field("artifact_links", &p.artifact_links)?;
        s.serialize_field("traces", &p.traces)?;
        s.end()
    }
}
impl Serialize for Diagram5<'_> {
    fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
        let d = self.0;
        let mut s = serializer.serialize_struct("Diagram", 8)?;
        s.serialize_field("id", &d.id)?;
        s.serialize_field("alias", &d.alias)?;
        s.serialize_field("name", &d.name)?;
        s.serialize_field("description", &d.description)?;
        s.serialize_field("layer", &d.layer)?;
        s.serialize_field("projection", &d.projection)?;
        s.serialize_field("nodes", &d.nodes)?;
        s.serialize_field("routes", &d.routes)?;
        s.end()
    }
}
fn alias(p: &Project, name: &str) -> Id {
    p.elements
        .values()
        .find(|e| e.alias == name)
        .map(|e| e.id)
        .or_else(|| p.relations.values().find(|e| e.alias == name).map(|e| e.id))
        .unwrap()
}
fn main() {
    assert_eq!(
        SCHEMA_VERSION, 6,
        "fixture writer must use historical core6 library"
    );
    let out = Path::new("crates/oa-desktop/src/recovery/fixtures");
    fs::create_dir_all(out).unwrap();
    let original = persistence::decode(&fs::read("examples/release1/model.json").unwrap()).unwrap();
    for schema in [5, 6] {
        let mut p = original.clone();
        if schema == 5 {
            let mut removed: BTreeSet<_> = p
                .elements
                .values()
                .filter(|e| e.kind() == Kind::ExchangeCategory)
                .map(|e| e.id)
                .collect();
            removed.extend(
                p.relations
                    .values()
                    .filter(|r| r.kind() == RelationKind::CommunicationMean)
                    .map(|r| r.id),
            );
            removed.extend(
                p.relations
                    .values()
                    .filter(|r| {
                        r.kind() == RelationKind::ExchangeAllocation
                            && removed.contains(&r.source())
                    })
                    .map(|r| r.id)
                    .collect::<Vec<_>>(),
            );
            p.elements.retain(|id, _| !removed.contains(id));
            p.relations.retain(|id, _| !removed.contains(id));
            p.traces
                .retain(|_, t| !removed.contains(&t.oa) && !removed.contains(&t.sa));
            for d in p.diagrams.values_mut() {
                d.view_options = Default::default();
            }
            let assess = alias(&p, "oa_assess");
            let repair = alias(&p, "oa_repair");
            let request = alias(&p, "oa_repair_request");
            for name in ["oa_conversation", "oa_full_scenario"] {
                let id = alias(&p, name);
                let Some(SharedBody::Scenario { viewpoint, .. }) =
                    p.elements.get_mut(&id).unwrap().shared_mut()
                else {
                    panic!()
                };
                *viewpoint = ScenarioViewpoint::OperationalActivity;
            }
            for (name, work) in [
                ("oa_caller", assess),
                ("oa_responder", repair),
                ("oa_outer_controller", assess),
                ("oa_outer_technician", repair),
            ] {
                let id = alias(&p, name);
                let Some(SharedBody::Lifeline { represented }) =
                    p.elements.get_mut(&id).unwrap().shared_mut()
                else {
                    panic!()
                };
                *represented = Some(work);
            }
            for name in ["oa_call", "oa_reply"] {
                let id = alias(&p, name);
                let Some(SharedBody::Occurrence {
                    body: OccurrenceBody::Exchange { exchange, .. },
                    ..
                }) = p.elements.get_mut(&id).unwrap().shared_mut()
                else {
                    panic!()
                };
                *exchange = Some(request);
            }
        }
        let issues = validation::validate(&p);
        assert!(
            !issues
                .iter()
                .any(|i| i.severity == validation::Severity::Error),
            "{issues:?}"
        );
        let mut bundle = format_bundle(&p);
        if schema == 5 {
            let block = "    view_options {\n        coverage \"All\";\n        exchange_labels \"Name\";\n        hidden_edges [];\n        participant_categories \"All\";\n        relation_kinds \"All\";\n        work_categories \"All\";\n        work_contexts \"All\";\n    };\n";
            let mut removed = 0;
            for text in bundle.files.values_mut() {
                removed += text.matches(block).count();
                *text = text.replace(block, "");
            }
            assert_eq!(removed, p.diagrams.len());
        }
        let entry = bundle.files.get_mut(&bundle.entry).unwrap();
        *entry = entry.replacen(
            "arcadia 6;",
            &format!("// Frozen legacy recovery input 雨.\r\narcadia // profile\r\n {schema};"),
            1,
        );
        let compiled = compile_bundle(&bundle, ProjectLimits::default()).unwrap();
        assert_eq!(compiled.decoded.project, p);
        let bytes = if schema == 5 {
            serde_json::to_vec(&Project5(&p)).unwrap()
        } else {
            serde_json::to_vec(&p).unwrap()
        };
        assert_eq!(persistence::decode(&bytes).unwrap(), p);
        fs::write(out.join(format!("source{schema}-model.json")), &bytes).unwrap();
        fs::write(
            out.join(format!("source{schema}-bundle.json")),
            serde_json::to_string_pretty(&bundle).unwrap() + "\n",
        )
        .unwrap();
        let hash = bytes.iter().fold(0xcbf29ce484222325u64, |h, b| {
            (h ^ u64::from(*b)).wrapping_mul(0x100000001b3)
        });
        println!(
            "source{schema}: files={}, elements={}, relations={}, traces={}, fingerprint={hash:016x}",
            bundle.files.len(),
            p.elements.len(),
            p.relations.len(),
            p.traces.len()
        );
    }
}