raysense 0.12.0

/*
 *   Copyright (c) 2025-2026 Anton Kundenko <singaraiona@gmail.com>
 *   All rights reserved.
 *
 *   Permission is hereby granted, free of charge, to any person obtaining a copy
 *   of this software and associated documentation files (the "Software"), to deal
 *   in the Software without restriction, including without limitation the rights
 *   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *   copies of the Software, and to permit persons to whom the Software is
 *   furnished to do so, subject to the following conditions:
 *
 *   The above copyright notice and this permission notice shall be included in all
 *   copies or substantial portions of the Software.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *   SOFTWARE.
 */

use serde::{Deserialize, Serialize};
use std::path::PathBuf;

#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
pub enum Language {
    C,
    Cpp,
    CSharp,
    Java,
    Kotlin,
    Python,
    Rayfall,
    Ruby,
    Rust,
    Scala,
    Swift,
    TypeScript,
    Unknown,
}

impl Language {
    pub fn from_path(path: &std::path::Path) -> Self {
        match path.extension().and_then(|ext| ext.to_str()) {
            Some("c") | Some("h") => Self::C,
            Some("cc") | Some("cpp") | Some("cxx") | Some("hh") | Some("hpp") | Some("hxx") => {
                Self::Cpp
            }
            Some("cs") => Self::CSharp,
            Some("java") => Self::Java,
            Some("kt") | Some("kts") => Self::Kotlin,
            Some("py") => Self::Python,
            Some("rfl") => Self::Rayfall,
            Some("rb") => Self::Ruby,
            Some("rs") => Self::Rust,
            Some("scala") | Some("sc") => Self::Scala,
            Some("swift") => Self::Swift,
            Some("ts") | Some("tsx") | Some("js") | Some("jsx") => Self::TypeScript,
            _ => Self::Unknown,
        }
    }

    pub fn is_supported(self) -> bool {
        !matches!(self, Self::Unknown)
    }
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SnapshotFact {
    pub snapshot_id: String,
    pub root: PathBuf,
    pub file_count: usize,
    pub function_count: usize,
    pub import_count: usize,
    pub call_count: usize,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct FileFact {
    pub file_id: usize,
    pub path: PathBuf,
    pub language: Language,
    pub language_name: String,
    pub module: String,
    pub lines: usize,
    pub bytes: usize,
    pub content_hash: String,
    /// Number of lines that look like comments (line-prefix or block-body).
    /// Heuristic — correctness is best-effort across languages.
    #[serde(default)]
    pub comment_lines: usize,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct FunctionFact {
    pub function_id: usize,
    pub file_id: usize,
    pub name: String,
    pub start_line: usize,
    pub end_line: usize,
    /// Visibility classification of the declaration. `Unknown` until a
    /// per-plugin pattern matches (or always, for languages whose
    /// `visibility_patterns` is empty).
    #[serde(default)]
    pub visibility: Visibility,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct EntryPointFact {
    pub entry_id: usize,
    pub file_id: usize,
    pub kind: EntryPointKind,
    pub symbol: String,
}

/// Normalized visibility level for a function or type declaration.
/// Languages map their syntactic modifiers to this small enum via the
/// per-plugin `visibility_patterns` config: e.g. Rust `pub(crate)` ->
/// `Internal`, Java `protected` -> `Protected`. `Unknown` is the serde
/// default and means "no pattern matched / not classified".
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, Default)]
#[serde(rename_all = "lowercase")]
pub enum Visibility {
    Public,
    Protected,
    Internal,
    Restricted,
    Private,
    #[default]
    Unknown,
}

impl Visibility {
    /// Lowercase string form, used for the splayed `visibility` symbol
    /// column. Mirrors the `#[serde(rename_all = "lowercase")]` mapping.
    pub fn as_str(self) -> &'static str {
        match self {
            Self::Public => "public",
            Self::Protected => "protected",
            Self::Internal => "internal",
            Self::Restricted => "restricted",
            Self::Private => "private",
            Self::Unknown => "unknown",
        }
    }
}

#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
pub enum EntryPointKind {
    Binary,
    Example,
    Test,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ImportFact {
    pub import_id: usize,
    pub from_file: usize,
    pub target: String,
    pub kind: String,
    pub resolution: ImportResolution,
    pub resolved_file: Option<usize>,
    /// Alias bound by the import, if the source spells out a rename
    /// (Rust `use foo::Bar as Baz;`, ES `import { foo as bar }`,
    /// Python `import x as y`). `None` when no alias is declared or the
    /// language plugin doesn't capture them.
    #[serde(default)]
    pub alias: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CallFact {
    pub call_id: usize,
    pub file_id: usize,
    pub caller_function: Option<usize>,
    pub target: String,
    pub line: usize,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CallEdgeFact {
    pub edge_id: usize,
    pub call_id: usize,
    pub caller_function: usize,
    pub callee_function: usize,
}

#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
pub enum ImportResolution {
    External,
    Local,
    System,
    Unresolved,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ScanReport {
    pub snapshot: SnapshotFact,
    pub files: Vec<FileFact>,
    pub functions: Vec<FunctionFact>,
    pub entry_points: Vec<EntryPointFact>,
    pub imports: Vec<ImportFact>,
    pub calls: Vec<CallFact>,
    pub call_edges: Vec<CallEdgeFact>,
    #[serde(default)]
    pub types: Vec<TypeFact>,
    /// `impl Trait for Type` style relationships (Rust today). Populated
    /// alongside `types` for languages whose plugin extracts them.
    #[serde(default)]
    pub trait_impls: Vec<TraitImplFact>,
    pub graph: crate::graph::GraphMetrics,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TypeFact {
    pub type_id: usize,
    pub file_id: usize,
    pub name: String,
    pub is_abstract: bool,
    pub line: usize,
    /// Base classes / interfaces named on the type's defining line. For
    /// languages that declare inheritance inline (`class Foo extends
    /// Bar`, `class Foo(Bar):`) these are populated at parse time.
    /// For Rust, `impl Trait for Type` is captured as a `TraitImplFact`
    /// on the `ScanReport` instead, so this field stays empty.
    #[serde(default)]
    pub bases: Vec<String>,
    /// Visibility classification of the type declaration.
    #[serde(default)]
    pub visibility: Visibility,
}

/// One `impl Trait for Type` relationship. Languages that declare
/// inheritance separately from the type definition (Rust impl blocks,
/// Swift `extension Foo: Bar`, future Go method-set inference) emit
/// these so blast-radius / coupling / cycles tooling can see the
/// trait -> implementer edge without forcing a synthetic `TypeFact`
/// in every file that mentions the implementer.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TraitImplFact {
    pub impl_id: usize,
    pub file_id: usize,
    pub type_name: String,
    pub trait_name: String,
    pub line: usize,
}