ito-core 0.1.33

Core functionality and business logic for Ito
Documentation 
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use ito_core::archive::{
    TaskStatus as ArchiveTaskStatus, archive_exists, categorize_specs, change_exists,
    check_task_completion, copy_specs_to_main, discover_change_specs, generate_archive_name,
    list_available_changes, mark_change_complete_in_module_markdown, move_to_archive,
};
use std::path::Path;

fn write(path: &Path, contents: &str) {
    let Some(parent) = path.parent() else {
        panic!("path has no parent: {}", path.display());
    };
    std::fs::create_dir_all(parent).expect("create dir should succeed");
    std::fs::write(path, contents).expect("write should succeed");
}

#[test]
fn check_task_completion_handles_checkbox_and_enhanced_formats() {
    assert_eq!(check_task_completion(""), ArchiveTaskStatus::NoTasks);
    assert_eq!(
        check_task_completion("- [x] done\n* [X] done\n"),
        ArchiveTaskStatus::AllComplete
    );
    assert_eq!(
        check_task_completion("- [ ] todo\n- [x] done\n"),
        ArchiveTaskStatus::HasIncomplete {
            pending: 1,
            total: 2
        }
    );

    let enhanced = "- **Status**: [ ] pending\n- **Status**: [x] complete\n";
    assert_eq!(
        check_task_completion(enhanced),
        ArchiveTaskStatus::HasIncomplete {
            pending: 1,
            total: 2
        }
    );
}

#[test]
fn discover_and_copy_specs_and_archive_change() {
    let td = tempfile::tempdir().expect("tempdir should succeed");
    let ito = td.path().join(".ito");

    // Module + change setup.
    let change_name = "001-01_demo";
    let change_dir = ito.join("changes").join(change_name);
    write(change_dir.join("proposal.md").as_path(), "# proposal\n");

    // Module.md includes a checklist entry for the change.
    let module_dir = ito.join("modules").join("001_demo");
    write(
        module_dir.join("module.md").as_path(),
        &format!("# Demo\n\n## Changes\n- [ ] {change_name}\n"),
    );

    // Spec deltas under change.
    write(
        change_dir
            .join("specs")
            .join("auth")
            .join("spec.md")
            .as_path(),
        "## ADDED Requirements\n\n### Requirement: Auth\nAuth works.\n",
    );
    write(
        change_dir
            .join("specs")
            .join("billing")
            .join("spec.md")
            .as_path(),
        "## ADDED Requirements\n\n### Requirement: Billing\nBilling works.\n",
    );

    assert!(change_exists(&ito, change_name));

    let changes = list_available_changes(&ito).expect("list_available_changes");
    assert!(changes.contains(&change_name.to_string()));

    let specs = discover_change_specs(&ito, change_name).expect("discover_change_specs");
    assert_eq!(specs, vec!["auth".to_string(), "billing".to_string()]);

    // Categorize specs based on existence in main specs tree.
    write(
        ito.join("specs").join("auth").join("spec.md").as_path(),
        "# Auth Specification\n\n## Purpose\n\nCurrent auth behavior.\n\n## Requirements\n\n### Requirement: Existing auth\nExisting behavior remains.\n",
    );
    let (new_specs, existing_specs) = categorize_specs(&ito, &specs);
    assert_eq!(existing_specs, vec!["auth".to_string()]);
    assert_eq!(new_specs, vec!["billing".to_string()]);

    // Copy deltas back to main specs.
    let updated = copy_specs_to_main(&ito, change_name, &specs).expect("copy_specs_to_main");
    assert_eq!(updated, specs);
    assert!(ito.join("specs").join("billing").join("spec.md").exists());
    let auth = std::fs::read_to_string(ito.join("specs/auth/spec.md")).expect("auth spec");
    assert!(auth.contains("# Auth Specification"));
    assert!(auth.contains("### Requirement: Existing auth"));
    assert!(auth.contains("## Requirements"));
    assert!(auth.contains("### Requirement: Auth"));
    assert!(!auth.contains("## ADDED Requirements"));

    // Archive.
    let archive_name = format!("2026-01-01-{change_name}");
    mark_change_complete_in_module_markdown(&ito, change_name)
        .expect("mark_change_complete_in_module_markdown");
    move_to_archive(&ito, change_name, &archive_name).expect("move_to_archive");

    assert!(archive_exists(&ito, &archive_name));
    assert!(!ito.join("changes").join(change_name).exists());
    assert!(
        ito.join("changes")
            .join("archive")
            .join(&archive_name)
            .exists()
    );

    let module_md = std::fs::read_to_string(module_dir.join("module.md")).expect("read module");
    assert!(
        module_md.contains("- [x]"),
        "change should be marked complete"
    );
}

#[test]
fn generate_archive_name_prefixes_with_date() {
    let name = generate_archive_name("001-01_demo");
    assert!(name.ends_with("-001-01_demo"));
    assert!(name.len() > "001-01_demo".len());
}

#[test]
fn retiring_last_requirement_preserves_capability_design_file() {
    let td = tempfile::tempdir().expect("tempdir");
    let ito = td.path().join(".ito");
    let change_name = "001-02_retire-capability";
    write(
        &ito.join("specs/legacy/spec.md"),
        "## Requirements\n\n### Requirement: Legacy\nLegacy behavior.\n",
    );
    write(
        &ito.join("specs/legacy/design.md"),
        "# Historical design context\n",
    );
    write(
        &ito.join(format!("changes/{change_name}/specs/legacy/spec.md")),
        "## REMOVED Requirements\n\n### Requirement: Legacy\nLegacy behavior.\n",
    );

    let updated =
        copy_specs_to_main(&ito, change_name, &["legacy".to_string()]).expect("retire requirement");
    assert_eq!(updated, ["legacy"]);
    assert!(!ito.join("specs/legacy/spec.md").exists());
    assert_eq!(
        std::fs::read_to_string(ito.join("specs/legacy/design.md")).expect("design preserved"),
        "# Historical design context\n"
    );
}

#[test]
fn reconciliation_failure_does_not_partially_update_earlier_specs() {
    let td = tempfile::tempdir().expect("tempdir");
    let ito = td.path().join(".ito");
    let change_name = "001-03_atomic-reconciliation";
    let first_base = "## Requirements\n\n### Requirement: Existing A\nStable A.\n";
    let second_base = "## Requirements\n\n### Requirement: Existing B\nStable B.\n";
    write(&ito.join("specs/a/spec.md"), first_base);
    write(&ito.join("specs/b/spec.md"), second_base);
    write(
        &ito.join(format!("changes/{change_name}/specs/a/spec.md")),
        "## ADDED Requirements\n\n### Requirement: Added A\nNew A.\n",
    );
    write(
        &ito.join(format!("changes/{change_name}/specs/b/spec.md")),
        "## MODIFIED Requirements\n\n### Requirement: Missing B\nInvalid B.\n",
    );

    let error = copy_specs_to_main(&ito, change_name, &["a".to_string(), "b".to_string()])
        .expect_err("later invalid delta");
    assert!(
        error
            .to_string()
            .contains("cannot modify missing requirement")
    );
    assert_eq!(
        std::fs::read_to_string(ito.join("specs/a/spec.md")).expect("first unchanged"),
        first_base
    );
    assert_eq!(
        std::fs::read_to_string(ito.join("specs/b/spec.md")).expect("second unchanged"),
        second_base
    );
}