gitversion-rs 0.2.0

//! File output: AssemblyInfo, project files, Wix.
//!
//! Corresponds to the original `GitVersion.Output/AssemblyInfo/*` and `WixUpdater/*`.

use super::variables::VersionVariables;
use anyhow::{Context, Result};
use quick_xml::events::{BytesText, Event};
use quick_xml::reader::Reader;
use quick_xml::writer::Writer;
use regex::Regex;
use rust_i18n::t;
use std::io::Cursor;
use std::path::{Path, PathBuf};

/// Template header for generated AssemblyInfo files (matches the original).
const ASSEMBLY_HEADER: &str = "\
//------------------------------------------------------------------------------
// <auto-generated>
// This code was generated by GitVersion.
//
// You can modify this code as we will not overwrite it when re-executing GitVersion
// </auto-generated>
//------------------------------------------------------------------------------
";

/// Recursively find files matching the given predicate under `root`.
fn find_recursive(root: &Path, matches: impl Fn(&Path) -> bool) -> Vec<PathBuf> {
    let mut out = Vec::new();
    let mut stack = vec![root.to_path_buf()];
    while let Some(dir) = stack.pop() {
        let Ok(entries) = std::fs::read_dir(&dir) else {
            continue;
        };
        for entry in entries.flatten() {
            let path = entry.path();
            if path.is_dir() {
                // Skip hidden directories such as .git.
                if path
                    .file_name()
                    .map(|n| n.to_string_lossy().starts_with('.'))
                    .unwrap_or(false)
                {
                    continue;
                }
                stack.push(path);
            } else if matches(&path) {
                out.push(path);
            }
        }
    }
    out.sort();
    out
}

/// Update AssemblyInfo files (creates them when `ensure` is true and they are missing).
///
/// When `files` is empty, searches the working directory recursively for AssemblyInfo.{cs,vb,fs}.
pub fn update_assembly_info(
    vars: &VersionVariables,
    work_dir: &Path,
    files: &[String],
    ensure: bool,
) -> Result<Vec<PathBuf>> {
    let targets: Vec<PathBuf> = if files.is_empty() {
        find_recursive(work_dir, |p| {
            let name = p
                .file_name()
                .map(|n| n.to_string_lossy().to_lowercase())
                .unwrap_or_default();
            matches!(
                name.as_str(),
                "assemblyinfo.cs" | "assemblyinfo.vb" | "assemblyinfo.fs"
            )
        })
    } else {
        files.iter().map(|f| work_dir.join(f)).collect()
    };

    let mut updated = Vec::new();
    for path in targets {
        if path.exists() {
            let content = std::fs::read_to_string(&path)
                .with_context(|| t!("file.read_failed", path = path.display()).to_string())?;
            let new = replace_assembly_attributes(&content, vars);
            std::fs::write(&path, new)?;
            updated.push(path);
        } else if ensure {
            let content = create_assembly_info(&path, vars);
            if let Some(parent) = path.parent() {
                std::fs::create_dir_all(parent).ok();
            }
            std::fs::write(&path, content)?;
            updated.push(path);
        }
    }
    Ok(updated)
}

/// Replace the three assembly attribute values in an existing AssemblyInfo file using regex.
fn replace_assembly_attributes(content: &str, vars: &VersionVariables) -> String {
    let replace_attr = |text: &str, attr: &str, value: &str| -> String {
        // Matches both `AssemblyVersion("...")` and `<Assembly: AssemblyVersion("...")>`.
        let re = Regex::new(&format!(r#"({attr}\s*\(\s*")[^"]*("\s*\))"#)).unwrap();
        re.replace_all(text, format!("${{1}}{value}${{2}}").as_str())
            .into_owned()
    };
    let mut out = content.to_string();
    out = replace_attr(&out, "AssemblyFileVersion", &vars.assembly_sem_file_ver);
    out = replace_attr(
        &out,
        "AssemblyInformationalVersion",
        &vars.informational_version,
    );
    out = replace_attr(&out, "AssemblyVersion", &vars.assembly_sem_ver);
    out
}

/// Generate the content for a new AssemblyInfo file (syntax varies by extension).
fn create_assembly_info(path: &Path, vars: &VersionVariables) -> String {
    let ext = path
        .extension()
        .map(|e| e.to_string_lossy().to_lowercase())
        .unwrap_or_default();
    let (fv, av, iv) = (
        &vars.assembly_sem_file_ver,
        &vars.assembly_sem_ver,
        &vars.informational_version,
    );
    match ext.as_str() {
        "vb" => format!(
            "{ASSEMBLY_HEADER}\nImports System.Reflection\n\n\
             <Assembly: AssemblyFileVersion(\"{fv}\")>\n\
             <Assembly: AssemblyVersion(\"{av}\")>\n\
             <Assembly: AssemblyInformationalVersion(\"{iv}\")>\n"
        ),
        "fs" => format!(
            "{ASSEMBLY_HEADER}\nnamespace AssemblyInfo\n\nopen System.Reflection\n\n\
             [<assembly: AssemblyFileVersion(\"{fv}\")>]\n\
             [<assembly: AssemblyVersion(\"{av}\")>]\n\
             [<assembly: AssemblyInformationalVersion(\"{iv}\")>]\n\
             do ()\n"
        ),
        _ => format!(
            "{ASSEMBLY_HEADER}\nusing System.Reflection;\n\n\
             [assembly: AssemblyFileVersion(\"{fv}\")]\n\
             [assembly: AssemblyVersion(\"{av}\")]\n\
             [assembly: AssemblyInformationalVersion(\"{iv}\")]\n"
        ),
    }
}

/// Update version elements in .csproj / .vbproj / .fsproj files.
pub fn update_project_files(
    vars: &VersionVariables,
    work_dir: &Path,
    files: &[String],
) -> Result<Vec<PathBuf>> {
    let targets: Vec<PathBuf> = if files.is_empty() {
        find_recursive(work_dir, |p| {
            let ext = p
                .extension()
                .map(|e| e.to_string_lossy().to_lowercase())
                .unwrap_or_default();
            matches!(ext.as_str(), "csproj" | "vbproj" | "fsproj")
        })
    } else {
        files.iter().map(|f| work_dir.join(f)).collect()
    };

    let mut updated = Vec::new();
    for path in targets {
        if !path.exists() {
            continue;
        }
        let content = std::fs::read_to_string(&path)
            .with_context(|| t!("file.read_failed", path = path.display()).to_string())?;
        let new = replace_project_elements(&content, vars)
            .with_context(|| t!("file.xml_update_failed", path = path.display()).to_string())?;
        std::fs::write(&path, new)?;
        updated.push(path);
    }
    Ok(updated)
}

/// Target version elements in fixed order (matching the original `ProjectFileUpdater` processing order).
const PROJECT_ELEMENTS: [&str; 4] = [
    "AssemblyVersion",
    "FileVersion",
    "InformationalVersion",
    "Version",
];

/// Update version elements in a project file using real XML parsing.
///
/// Uses quick-xml events rather than regex, so comments, attributes, and indentation are preserved.
/// Like the original `ProjectFileUpdater`, existing elements have their values updated, and
/// missing elements are appended to the first `<PropertyGroup>`.
fn replace_project_elements(content: &str, vars: &VersionVariables) -> Result<String> {
    let value_of = |elem: &str| -> &str {
        match elem {
            "AssemblyVersion" => &vars.assembly_sem_ver,
            "FileVersion" => &vars.assembly_sem_file_ver,
            "InformationalVersion" => &vars.informational_version,
            _ => &vars.sem_ver,
        }
    };

    // 1) Collect all events in owned form.
    let mut reader = Reader::from_str(content);
    reader.config_mut().trim_text(false);
    let mut events: Vec<Event<'static>> = Vec::new();
    loop {
        match reader.read_event() {
            Ok(Event::Eof) => break,
            Ok(ev) => events.push(ev.into_owned()),
            Err(e) => return Err(anyhow::anyhow!("{}", t!("file.xml_parse_error", error = e))),
        }
    }

    let name_of =
        |e: &quick_xml::events::BytesStart| String::from_utf8_lossy(e.name().as_ref()).into_owned();
    let end_name_of =
        |e: &quick_xml::events::BytesEnd| String::from_utf8_lossy(e.name().as_ref()).into_owned();

    // 2) Update text in existing target elements and record which exist plus the first PropertyGroup position.
    let mut existing: std::collections::HashSet<String> = std::collections::HashSet::new();
    let mut current: Option<String> = None;
    let mut replaced = false;
    let mut first_pg_start: Option<usize> = None;
    let mut first_pg_end: Option<usize> = None;
    let mut child_indent: Option<String> = None;
    let mut pg_depth = 0i32;

    for i in 0..events.len() {
        match &events[i] {
            Event::Start(e) => {
                let name = name_of(e);
                if name == "PropertyGroup" {
                    pg_depth += 1;
                    if first_pg_start.is_none() {
                        first_pg_start = Some(i);
                    }
                }
                if PROJECT_ELEMENTS.contains(&name.as_str()) {
                    existing.insert(name.clone());
                    current = Some(name);
                    replaced = false;
                }
            }
            Event::Text(_) => {
                // Capture the indentation of the first child inside the first PropertyGroup.
                if first_pg_start.is_some() && first_pg_end.is_none() && child_indent.is_none() {
                    if let (Event::Text(t), Some(Event::Start(_))) = (&events[i], events.get(i + 1))
                    {
                        let s = String::from_utf8_lossy(t.as_ref()).into_owned();
                        if s.contains('\n') {
                            child_indent = Some(s);
                        }
                    }
                }
                if let Some(name) = current.clone() {
                    if !replaced {
                        events[i] = Event::Text(BytesText::new(value_of(&name)).into_owned());
                        replaced = true;
                    }
                }
            }
            Event::End(e) => {
                let name = end_name_of(e);
                if current.as_deref() == Some(name.as_str()) {
                    current = None;
                }
                if name == "PropertyGroup" {
                    pg_depth -= 1;
                    if first_pg_end.is_none() && first_pg_start.is_some() && pg_depth == 0 {
                        first_pg_end = Some(i);
                    }
                }
            }
            _ => {}
        }
    }

    // 3) Insert missing elements before the closing tag of the first PropertyGroup.
    let missing: Vec<&str> = PROJECT_ELEMENTS
        .iter()
        .filter(|e| !existing.contains(**e))
        .copied()
        .collect();
    if let (Some(end_idx), false) = (first_pg_end, missing.is_empty()) {
        let indent = child_indent.unwrap_or_else(|| "\n    ".into());
        // Insert before the closing-indent text node (immediately before the End event).
        let insert_at = if end_idx > 0 && matches!(&events[end_idx - 1], Event::Text(_)) {
            end_idx - 1
        } else {
            end_idx
        };
        let mut new_events: Vec<Event<'static>> = Vec::new();
        for elem in &missing {
            new_events.push(Event::Text(BytesText::new(&indent).into_owned()));
            new_events.push(Event::Start(
                quick_xml::events::BytesStart::new(*elem).into_owned(),
            ));
            new_events.push(Event::Text(BytesText::new(value_of(elem)).into_owned()));
            new_events.push(Event::End(
                quick_xml::events::BytesEnd::new(*elem).into_owned(),
            ));
        }
        events.splice(insert_at..insert_at, new_events);
    }

    // 4) Re-serialise.
    let mut writer = Writer::new(Cursor::new(Vec::new()));
    for ev in events {
        writer.write_event(ev)?;
    }
    Ok(String::from_utf8(writer.into_inner().into_inner())?)
}

/// Update the version field in package manifests for various languages.
///
/// Uses a format-preserving parser for each format (not regex):
/// - `package.json` (Node.js): serde_json (preserves key order)
/// - `Cargo.toml` (Rust), `pyproject.toml` (Python): toml_edit (preserves comments and formatting)
///
/// When `files` is empty, searches the working directory recursively for known manifests.
pub fn update_package_files(
    vars: &VersionVariables,
    work_dir: &Path,
    files: &[String],
) -> Result<Vec<PathBuf>> {
    let targets: Vec<PathBuf> = if files.is_empty() {
        find_recursive(work_dir, |p| {
            let name = p
                .file_name()
                .map(|n| n.to_string_lossy().to_lowercase())
                .unwrap_or_default();
            // Exclude manifests inside node_modules / vendor directories.
            let in_vendor = p.components().any(|c| {
                let s = c.as_os_str().to_string_lossy();
                s == "node_modules" || s == "vendor" || s == "target"
            });
            !in_vendor
                && matches!(
                    name.as_str(),
                    "package.json" | "cargo.toml" | "pyproject.toml"
                )
        })
    } else {
        files.iter().map(|f| work_dir.join(f)).collect()
    };

    let mut updated = Vec::new();
    for path in targets {
        if !path.exists() {
            continue;
        }
        let name = path
            .file_name()
            .map(|n| n.to_string_lossy().to_lowercase())
            .unwrap_or_default();
        let content = std::fs::read_to_string(&path)
            .with_context(|| t!("file.read_failed", path = path.display()).to_string())?;
        // Package manifests use SemVer without build metadata.
        let version = &vars.sem_ver;
        let new = match name.as_str() {
            "package.json" => update_package_json(&content, version)?,
            "cargo.toml" => update_cargo_toml(&content, version)?,
            "pyproject.toml" => update_pyproject_toml(&content, version)?,
            _ => continue,
        };
        if let Some(new) = new {
            std::fs::write(&path, new)?;
            updated.push(path);
        }
    }
    Ok(updated)
}

/// Update the top-level `"version"` field in package.json (key order preserved, 2-space indent).
fn update_package_json(content: &str, version: &str) -> Result<Option<String>> {
    let mut value: serde_json::Value =
        serde_json::from_str(content).with_context(|| t!("file.json_parse_failed").to_string())?;
    let serde_json::Value::Object(map) = &mut value else {
        return Ok(None);
    };
    if !map.contains_key("version") {
        return Ok(None);
    }
    map.insert(
        "version".into(),
        serde_json::Value::String(version.to_string()),
    );
    let mut out = serde_json::to_string_pretty(&value)?;
    out.push('\n'); // npm convention: trailing newline.
    Ok(Some(out))
}

/// Update the `[package]` version in Cargo.toml (format-preserving).
fn update_cargo_toml(content: &str, version: &str) -> Result<Option<String>> {
    let mut doc = content
        .parse::<toml_edit::DocumentMut>()
        .with_context(|| t!("file.cargo_parse_failed").to_string())?;
    let Some(pkg) = doc.get_mut("package").and_then(|p| p.as_table_mut()) else {
        return Ok(None);
    };
    if !pkg.contains_key("version") {
        return Ok(None);
    }
    pkg["version"] = toml_edit::value(version);
    Ok(Some(doc.to_string()))
}

/// Update the `[project]` or `[tool.poetry]` version in pyproject.toml (format-preserving).
fn update_pyproject_toml(content: &str, version: &str) -> Result<Option<String>> {
    let mut doc = content
        .parse::<toml_edit::DocumentMut>()
        .with_context(|| t!("file.pyproject_parse_failed").to_string())?;
    let mut changed = false;
    // PEP 621: [project] version
    if let Some(project) = doc.get_mut("project").and_then(|p| p.as_table_mut()) {
        if project.contains_key("version") {
            project["version"] = toml_edit::value(version);
            changed = true;
        }
    }
    // Poetry: [tool.poetry] version
    if let Some(poetry) = doc
        .get_mut("tool")
        .and_then(|t| t.as_table_mut())
        .and_then(|t| t.get_mut("poetry"))
        .and_then(|p| p.as_table_mut())
    {
        if poetry.contains_key("version") {
            poetry["version"] = toml_edit::value(version);
            changed = true;
        }
    }
    Ok(if changed { Some(doc.to_string()) } else { None })
}

/// Generate the WiX version file (`GitVersion_WixVersion.wxi`).
pub fn write_wix(vars: &VersionVariables, work_dir: &Path) -> Result<PathBuf> {
    let mut s = String::new();
    s.push('\u{feff}'); // UTF-8 BOM
    s.push_str("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
    s.push_str("<Include xmlns=\"http://schemas.microsoft.com/wix/2006/wi\">\n");
    for (key, value) in vars.to_map() {
        s.push_str(&format!("  <?define {key}=\"{value}\"?>\n"));
    }
    s.push_str("</Include>");
    let path = work_dir.join("GitVersion_WixVersion.wxi");
    std::fs::write(&path, s)?;
    Ok(path)
}

#[cfg(test)]
mod tests {
    use super::*;

    fn vars() -> VersionVariables {
        VersionVariables {
            assembly_sem_ver: "1.0.1.0".into(),
            assembly_sem_file_ver: "1.0.1.0".into(),
            informational_version: "1.0.1-1+Branch.main".into(),
            sem_ver: "1.0.1-1".into(),
            ..Default::default()
        }
    }

    #[test]
    fn assembly_attribute_replacement() {
        let src = "[assembly: AssemblyVersion(\"0.0.0.0\")]\n\
                   [assembly: AssemblyFileVersion(\"0.0.0.0\")]\n\
                   [assembly: AssemblyInformationalVersion(\"0.0.0.0\")]\n";
        let out = replace_assembly_attributes(src, &vars());
        assert!(out.contains("AssemblyVersion(\"1.0.1.0\")"));
        assert!(out.contains("AssemblyFileVersion(\"1.0.1.0\")"));
        assert!(out.contains("AssemblyInformationalVersion(\"1.0.1-1+Branch.main\")"));
    }

    #[test]
    fn project_element_replacement_preserves_structure() {
        let src = "<Project Sdk=\"Microsoft.NET.Sdk\">\n  <!-- 주석 유지 -->\n  <PropertyGroup>\n    <Version>0.0.0</Version>\n    <AssemblyVersion>0.0.0.0</AssemblyVersion>\n  </PropertyGroup>\n</Project>";
        let out = replace_project_elements(src, &vars()).unwrap();
        assert!(out.contains("<Version>1.0.1-1</Version>"));
        assert!(out.contains("<AssemblyVersion>1.0.1.0</AssemblyVersion>"));
        // Comments and attributes are preserved.
        assert!(out.contains("<!-- 주석 유지 -->"));
        assert!(out.contains("Sdk=\"Microsoft.NET.Sdk\""));
    }

    #[test]
    fn project_does_not_touch_unrelated_text() {
        // Elements and text not in the target list must not be modified.
        let src = "<Project><PropertyGroup><Other>0.0.0</Other></PropertyGroup></Project>";
        let out = replace_project_elements(src, &vars()).unwrap();
        assert!(out.contains("<Other>0.0.0</Other>"));
    }

    #[test]
    fn package_json_version_update() {
        let src = "{\n  \"name\": \"x\",\n  \"version\": \"0.0.0\",\n  \"private\": true\n}";
        let out = update_package_json(src, "1.0.1-1").unwrap().unwrap();
        assert!(out.contains("\"version\": \"1.0.1-1\""));
        // Key order is preserved ("name" comes before "version").
        assert!(out.find("\"name\"").unwrap() < out.find("\"version\"").unwrap());
        assert!(out.contains("\"private\""));
    }

    #[test]
    fn cargo_toml_version_update_preserves_comments() {
        let src = "# comment\n[package]\nname = \"x\"  # inline\nversion = \"0.0.0\"\n";
        let out = update_cargo_toml(src, "1.0.1-1").unwrap().unwrap();
        assert!(out.contains("version = \"1.0.1-1\""));
        assert!(out.contains("# comment"));
        assert!(out.contains("# inline"));
    }

    #[test]
    fn pyproject_pep621_and_poetry() {
        let pep621 = "[project]\nname = \"x\"\nversion = \"0.0.0\"\n";
        let out = update_pyproject_toml(pep621, "1.0.1-1").unwrap().unwrap();
        assert!(out.contains("version = \"1.0.1-1\""));

        let poetry = "[tool.poetry]\nname = \"x\"\nversion = \"0.0.0\"\n";
        let out = update_pyproject_toml(poetry, "2.0.0").unwrap().unwrap();
        assert!(out.contains("version = \"2.0.0\""));
    }

    #[test]
    fn create_cs_assembly_info() {
        let out = create_assembly_info(Path::new("AssemblyInfo.cs"), &vars());
        assert!(out.contains("using System.Reflection;"));
        assert!(out.contains("[assembly: AssemblyFileVersion(\"1.0.1.0\")]"));
        assert!(out.starts_with("//---"));
    }
}