//! ref: composer/tests/Composer/Test/Repository/FilesystemRepositoryTest.php

use std::cell::RefCell;
use std::rc::Rc;

use indexmap::IndexMap;
use shirabe::dependency_resolver::operation::OperationInterface;
use shirabe::installed_versions::InstalledVersions;
use shirabe::installer::{InstallationManagerInterface, InstallerInterface};
use shirabe::io::IOInterface;
use shirabe::json::json_file::JsonFile;
use shirabe::package::PackageInterfaceHandle;
use shirabe::repository::InstalledRepositoryInterface;
use shirabe::repository::RepositoryInterface;
use shirabe::repository::filesystem_repository::FilesystemRepository;
use shirabe::util::filesystem::Filesystem;
use shirabe_php_shim::PhpMixed;

use crate::test_case::get_package;

/// PHP mocks JsonFile::read()/exists(); without a mocking framework the canned read value is
/// materialized as a real temp file whose decoded JSON reproduces the mock return value exactly.
fn create_temp_json_file(contents: &str) -> String {
    let mut path = std::env::temp_dir();
    let unique = format!(
        "shirabe_filesystemrepositorytest_{}_{}",
        std::process::id(),
        std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap()
            .as_nanos()
    );
    path.push(unique);
    std::fs::write(&path, contents.as_bytes()).unwrap();
    path.to_str().unwrap().to_string()
}

#[test]
fn test_repository_read() {
    let path = create_temp_json_file(
        r#"[{"name": "package1", "version": "1.0.0-beta", "type": "vendor"}]"#,
    );
    let json = JsonFile::new(path, None, None).unwrap();

    let mut repository = FilesystemRepository::new(json, false, None, None).unwrap();

    let packages = repository.get_packages().unwrap();

    assert_eq!(packages.len(), 1);
    assert_eq!(packages[0].get_name(), "package1");
    assert_eq!(packages[0].get_version(), "1.0.0.0-beta");
    assert_eq!(packages[0].get_type(), "vendor");
}

#[ignore]
#[test]
fn test_corrupted_repository_file() {
    // PHP mocks read() to return the scalar string 'foo'; a real file containing the JSON string
    // "foo" decodes to the same value, which the repository rejects as a non-array package list.
    let path = create_temp_json_file(r#""foo""#);
    let json = JsonFile::new(path, None, None).unwrap();

    let mut repository = FilesystemRepository::new(json, false, None, None).unwrap();

    let result = repository.get_packages();
    let err = result.unwrap_err();
    assert!(
        err.is::<shirabe::repository::InvalidRepositoryException>(),
        "expected InvalidRepositoryException, got: {err}"
    );
}

#[test]
fn test_unexistent_repository_file() {
    let mut path = std::env::temp_dir();
    path.push(format!(
        "shirabe_filesystemrepositorytest_missing_{}_{}",
        std::process::id(),
        std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap()
            .as_nanos()
    ));
    let json = JsonFile::new(path.to_str().unwrap().to_string(), None, None).unwrap();

    let mut repository = FilesystemRepository::new(json, false, None, None).unwrap();

    let packages = repository.get_packages().unwrap();
    assert_eq!(packages.len(), 0);
}

/// Stub for `InstallationManagerInterface` whose `getInstallPath` returns a fixed path, mirroring
/// the PHPUnit mock built with `disableOriginalConstructor()`. Only `get_install_path` is reached by
/// `FilesystemRepository::write`; the call counter backs PHP's `expects($this->exactly(2))`.
#[derive(Debug)]
struct InstallPathStub {
    calls: Rc<RefCell<i64>>,
    fixed_path: String,
}

impl InstallationManagerInterface for InstallPathStub {
    fn add_installer(&mut self, _installer: Box<dyn InstallerInterface>) {
        unimplemented!()
    }
    fn remove_installer(&mut self, _installer: &dyn InstallerInterface) {
        unimplemented!()
    }
    fn disable_plugins(&mut self) {
        unimplemented!()
    }
    fn is_package_installed(
        &mut self,
        _repo: &dyn InstalledRepositoryInterface,
        _package: PackageInterfaceHandle,
    ) -> anyhow::Result<bool> {
        unimplemented!()
    }
    fn ensure_binaries_presence(&mut self, _package: PackageInterfaceHandle) {
        unimplemented!()
    }
    fn execute(
        &mut self,
        _repo: &mut dyn InstalledRepositoryInterface,
        _operations: Vec<Rc<dyn OperationInterface>>,
        _dev_mode: bool,
        _run_scripts: bool,
        _download_only: bool,
    ) -> anyhow::Result<()> {
        unimplemented!()
    }
    fn get_install_path(&mut self, _package: PackageInterfaceHandle) -> Option<String> {
        *self.calls.borrow_mut() += 1;
        Some(self.fixed_path.clone())
    }
    fn set_output_progress(&mut self, _output_progress: bool) {
        unimplemented!()
    }
    fn notify_installs(&mut self, _io: Rc<RefCell<dyn IOInterface>>) {
        unimplemented!()
    }
}

#[test]
fn test_repository_write() {
    // PHP mocks JsonFile::write/read/getPath; here a real JsonFile under a temp repo dir is written
    // and read back. write() never reads the file (it dumps the in-memory packages), so the mocked
    // read()/exists() return values are irrelevant to the result.
    let base = std::fs::canonicalize(std::env::temp_dir()).unwrap();
    let repo_dir = format!(
        "{}/shirabe_repo_write_test_{}_{}",
        base.display(),
        std::process::id(),
        std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap()
            .as_nanos()
    );
    let mut fs = Filesystem::new(None);
    fs.remove_directory(&repo_dir).ok();

    let json_path = format!("{}/vendor/composer/installed.json", repo_dir);
    let json = JsonFile::new(json_path.clone(), None, None).unwrap();
    let mut repository = FilesystemRepository::new(json, false, None, None).unwrap();

    let calls = Rc::new(RefCell::new(0i64));
    let mut im = InstallPathStub {
        calls: calls.clone(),
        fixed_path: format!("{}/vendor/woop/woop", repo_dir),
    };

    repository.set_dev_package_names(vec!["mypkg2".to_string()]);
    repository
        .add_package(get_package("mypkg2", "1.2.3"))
        .unwrap();
    repository
        .add_package(get_package("mypkg", "0.1.10"))
        .unwrap();
    repository.write(true, &mut im).unwrap();

    // PHP asserts getInstallPath is called exactly twice (once per installed package).
    assert_eq!(*calls.borrow(), 2);

    let written = std::fs::read_to_string(&json_path).unwrap();
    let actual: serde_json::Value = serde_json::from_str(&written).unwrap();
    let expected = serde_json::json!({
        "packages": [
            {"name": "mypkg", "type": "library", "version": "0.1.10", "version_normalized": "0.1.10.0", "install-path": "../woop/woop"},
            {"name": "mypkg2", "type": "library", "version": "1.2.3", "version_normalized": "1.2.3.0", "install-path": "../woop/woop"},
        ],
        "dev": true,
        "dev-package-names": ["mypkg2"],
    });
    assert_eq!(actual, expected);

    fs.remove_directory(&repo_dir).ok();
}

#[test]
#[ignore = "needs get_root_package + configure_links test helpers (not present in tests/common; project_test_port_link_setters describes them via ArrayLoader::load_packages but this branch lacks them) plus exact byte-match of the generated installed.php fixture under a chdir"]
fn test_repository_writes_installed_php() {
    todo!()
}

#[ignore]
#[test]
fn test_safely_load_installed_versions() {
    let fixtures_dir = format!(
        "{}/../../composer/tests/Composer/Test/Repository/Fixtures",
        env!("CARGO_MANIFEST_DIR")
    );
    let path = format!("{}/installed_complex.php", fixtures_dir);

    let result = FilesystemRepository::safely_load_installed_versions(&path);
    assert!(result, "The file should be considered valid");

    let raw_data = InstalledVersions::get_all_raw_data();
    let raw_data = raw_data.last().cloned().unwrap();

    let mut root: IndexMap<String, PhpMixed> = IndexMap::new();
    root.insert(
        "install_path".to_string(),
        PhpMixed::String(format!("{}/./", fixtures_dir)),
    );
    root.insert(
        "aliases".to_string(),
        PhpMixed::List(vec![
            PhpMixed::String("1.10.x-dev".to_string()),
            PhpMixed::String("2.10.x-dev".to_string()),
        ]),
    );
    root.insert("name".to_string(), PhpMixed::String("__root__".to_string()));
    root.insert("true".to_string(), PhpMixed::Bool(true));
    root.insert("false".to_string(), PhpMixed::Bool(false));
    root.insert("null".to_string(), PhpMixed::Null);

    let mut a_provider: IndexMap<String, PhpMixed> = IndexMap::new();
    a_provider.insert(
        "foo".to_string(),
        PhpMixed::String("simple string/no backslash".to_string()),
    );
    a_provider.insert(
        "install_path".to_string(),
        PhpMixed::String(format!(
            "{}/vendor/{{${{passthru('bash -i')}}}}",
            fixtures_dir
        )),
    );
    a_provider.insert("empty array".to_string(), PhpMixed::List(vec![]));

    let mut c_c: IndexMap<String, PhpMixed> = IndexMap::new();
    c_c.insert(
        "install_path".to_string(),
        PhpMixed::String("/foo/bar/ven/do{}r/c/c${}".to_string()),
    );
    c_c.insert("aliases".to_string(), PhpMixed::List(vec![]));
    c_c.insert(
        "reference".to_string(),
        PhpMixed::String("{${passthru('bash -i')}} Foo\\Bar\n\ttab\u{0b}verticaltab\0".to_string()),
    );

    let mut versions: IndexMap<String, PhpMixed> = IndexMap::new();
    versions.insert("a/provider".to_string(), PhpMixed::Array(a_provider));
    versions.insert("c/c".to_string(), PhpMixed::Array(c_c));

    let mut expected: IndexMap<String, PhpMixed> = IndexMap::new();
    expected.insert("root".to_string(), PhpMixed::Array(root));
    expected.insert("versions".to_string(), PhpMixed::Array(versions));

    assert_eq!(raw_data, expected);
}