#[path = "inspection/documentation.rs"]
mod documentation;

use super::Directory;
use dever::compiler::project::Project;
use std::process::Command;

#[path = "inspection/dispatch.rs"]
mod dispatch;
#[path = "inspection/flows.rs"]
mod flows;
#[path = "inspection/links.rs"]
mod links;

#[test]
fn inspection_preserves_multiple_callers_sites_and_utf16_columns() {
    let directory = Directory::new();
    let path = directory.0.join("main.dever");
    let source = "label(name: Text) (text: Text) {\n  text = name\n}\n\nfirst(name: Text) (text: Text) {\n  text = \"😀\" + label(name) + label(\"另\")\n}\n\nsecond(name: Text) (text: Text) {\n  text = label(name)\n}\n";
    std::fs::write(&path, source).unwrap();
    let project = Project::load(&path).unwrap();
    let mut index = project.inspect().unwrap();
    index.select("main.label", 1).unwrap();
    let label = index
        .symbols
        .iter()
        .find(|symbol| symbol.name == "main.label")
        .unwrap();
    let calls: Vec<_> = index
        .calls
        .iter()
        .filter(|call| call.callee == label.id)
        .collect();
    assert_eq!(calls.len(), 3);
    assert_eq!(
        calls
            .iter()
            .map(|call| call.caller)
            .collect::<std::collections::BTreeSet<_>>()
            .len(),
        2
    );
    let line = source.lines().nth(5).unwrap();
    let first = calls.iter().find(|call| call.site.start.line == 5).unwrap();
    assert_eq!(
        first.site.start.character,
        line[..line.find("label").unwrap()].encode_utf16().count()
    );
    assert_eq!(
        first.site.end.character - first.site.start.character,
        "label".len()
    );
    assert_eq!(index.files.len(), 1);
    assert!(index.select("does.not.exist", 1).is_err());
}

#[test]
fn inspection_retains_clauses_and_distinguishes_callback_and_task_dispatch() {
    let directory = Directory::new();
    let path = directory.0.join("main.dever");
    std::fs::write(&path, "label(value: true) (text: Text) {\n text = \"yes\"\n}\nlabel(value: other) (text: Text) {\n text = \"no\"\n}\nmain() (texts: List<Text>, text: Text) {\n texts = each(label, [true, false])\n task = run(label(true))\n text = wait(task)\n}\n").unwrap();
    let index = Project::load(&path).unwrap().inspect().unwrap();
    let label = index
        .symbols
        .iter()
        .find(|symbol| symbol.name == "main.label")
        .unwrap();
    assert_eq!(label.declarations.len(), 2);
    let calls: Vec<_> = index
        .calls
        .iter()
        .filter(|call| call.callee == label.id)
        .collect();
    assert_eq!(calls.len(), 2);
    assert!(calls.iter().any(|call| call.kind == "callback"));
    assert!(calls.iter().any(|call| call.kind == "run"));
    for call in calls {
        assert_eq!(call.site.end.character - call.site.start.character, 5);
    }
}

#[test]
fn inspection_cli_resolves_real_command_bindings_and_reports_failures() {
    let directory = Directory::new();
    let root = directory.0.join("app");
    dever::compiler::project::create(&root).unwrap();
    let output = Command::new(env!("CARGO_BIN_EXE_dever"))
        .args([
            "inspect",
            root.to_str().unwrap(),
            "--symbol",
            "hello.greeting.greet",
            "--json",
        ])
        .output()
        .unwrap();
    assert!(
        output.status.success(),
        "{}",
        String::from_utf8_lossy(&output.stderr)
    );
    let index: serde_json::Value = serde_json::from_slice(&output.stdout).unwrap();
    assert_eq!(index["calls"].as_array().unwrap().len(), 1);
    assert_eq!(index["calls"][0]["kind"], "command");
    let failed = Command::new(env!("CARGO_BIN_EXE_dever"))
        .args(["inspect", root.to_str().unwrap(), "--symbol", "missing"])
        .output()
        .unwrap();
    assert!(!failed.status.success());
    assert!(failed.stdout.is_empty());
    assert!(String::from_utf8_lossy(&failed.stderr).contains("unknown symbol"));
}

#[test]
fn inspection_does_not_change_generated_rust_or_accept_invalid_source() {
    let directory = Directory::new();
    let path = directory.0.join("main.dever");
    std::fs::write(&path, "main() (value: Int) {\n value = 42\n}\n").unwrap();
    let project = Project::load(&path).unwrap();
    let emit = || {
        let program = project.check().unwrap();
        dever::compiler::emit::generate(
            &program,
            &project.sources,
            &std::collections::BTreeSet::from([0]),
        )
    };
    let before = emit();
    project.inspect().unwrap();
    assert_eq!(emit(), before);
    std::fs::write(&path, "main() (value: Int) {\n value = unknown()\n}\n").unwrap();
    assert!(Project::load(&path).unwrap().inspect().is_err());
}

#[test]
fn inspection_keeps_job_dispatch_and_static_handler_specializations() {
    let fixtures = std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("../test/rust/fixtures");
    let jobs = Project::load(&fixtures.join("job"))
        .unwrap()
        .inspect()
        .unwrap();
    let publish = jobs
        .symbols
        .iter()
        .find(|symbol| symbol.name == "demo.queue.job.publish")
        .unwrap();
    assert!(
        jobs.calls
            .iter()
            .any(|call| call.callee == publish.id && call.kind == "enqueue")
    );
    assert!(
        jobs.calls
            .iter()
            .any(|call| call.caller == publish.id && call.kind == "call")
    );
    let handlers = Project::load(&fixtures.join("handler.dever"))
        .unwrap()
        .inspect()
        .unwrap();
    let apply = handlers
        .symbols
        .iter()
        .filter(|symbol| symbol.name == "main.apply")
        .collect::<Vec<_>>();
    assert_eq!(apply.len(), 1);
    let targets: std::collections::BTreeSet<_> = handlers
        .calls
        .iter()
        .filter(|call| call.caller == apply[0].id)
        .map(|call| handlers.symbols[call.callee].name.as_str())
        .collect();
    assert!(targets.contains("main.increment"));
    assert!(targets.contains("main.decrement"));
}