//! Copyright (c) 2022-2026 GitDataAi All rights reserved.

use gitks::error::GitResult;
use gitks::pb::object_selector::Selector;
use gitks::pb::{ObjectName, ObjectSelector};

fn test_macro(selector: Option<ObjectSelector>) -> GitResult<String> {
    let result = gitks::resolve_revision!(selector);
    Ok(result)
}

fn test_macro_with_default(selector: Option<ObjectSelector>, default: &str) -> GitResult<String> {
    let result = gitks::resolve_revision!(selector, default);
    Ok(result)
}

#[test]
fn test_resolve_revision_with_oid() {
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Oid(gitks::pb::Oid {
            hex: "abc1234567890123456789012345678901234567".to_string(),
            value: vec![],
            format: gitks::pb::ObjectFormat::Sha1 as i32,
        })),
    });

    let result = test_macro(selector).unwrap();
    assert_eq!(result, "abc1234567890123456789012345678901234567");
}

#[test]
fn test_resolve_revision_with_valid_revision() {
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Revision(ObjectName {
            revision: "main".to_string(),
        })),
    });

    let result = test_macro(selector).unwrap();
    assert_eq!(result, "main");
}

#[test]
fn test_resolve_revision_with_valid_branch() {
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Revision(ObjectName {
            revision: "feature/new-api".to_string(),
        })),
    });

    let result = test_macro(selector).unwrap();
    assert_eq!(result, "feature/new-api");
}

#[test]
fn test_resolve_revision_with_head() {
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Revision(ObjectName {
            revision: "HEAD".to_string(),
        })),
    });

    let result = test_macro(selector).unwrap();
    assert_eq!(result, "HEAD");
}

#[test]
fn test_resolve_revision_with_ancestry() {
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Revision(ObjectName {
            revision: "main~3".to_string(),
        })),
    });

    let result = test_macro(selector).unwrap();
    assert_eq!(result, "main~3");
}

#[test]
fn test_resolve_revision_none_defaults_to_head() {
    let result = test_macro(None).unwrap();
    assert_eq!(result, "HEAD");
}

#[test]
fn test_resolve_revision_with_custom_default() {
    let result = test_macro_with_default(None, "develop").unwrap();
    assert_eq!(result, "develop");
}

#[test]
fn test_resolve_revision_empty_selector() {
    let selector = Some(ObjectSelector { selector: None });
    let result = test_macro(selector).unwrap();
    assert_eq!(result, "HEAD");
}

#[test]
fn test_resolve_revision_empty_with_custom_default() {
    let selector = Some(ObjectSelector { selector: None });
    let result = test_macro_with_default(selector, "custom-branch").unwrap();
    assert_eq!(result, "custom-branch");
}

#[test]
fn test_resolve_revision_rejects_dangerous() {
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Revision(ObjectName {
            revision: "branch;rm -rf /".to_string(),
        })),
    });

    let result = test_macro(selector);
    assert!(result.is_err());
}

#[test]
fn test_resolve_revision_rejects_traversal() {
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Revision(ObjectName {
            revision: "../etc/passwd".to_string(),
        })),
    });

    let result = test_macro(selector);
    assert!(result.is_err());
}

#[test]
fn test_resolve_revision_rejects_excessive_depth() {
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Revision(ObjectName {
            revision: "main~99999".to_string(),
        })),
    });

    let result = test_macro(selector);
    assert!(result.is_err());
}

#[test]
fn test_resolve_revision_rejects_too_long() {
    let long_rev = "a".repeat(300);
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Revision(ObjectName { revision: long_rev })),
    });

    let result = test_macro(selector);
    assert!(result.is_err());
}

#[test]
fn test_resolve_revision_accepts_valid_hex() {
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Revision(ObjectName {
            revision: "deadbeef1234567890abcdef".to_string(),
        })),
    });

    let result = test_macro(selector).unwrap();
    assert_eq!(result, "deadbeef1234567890abcdef");
}

#[test]
fn test_resolve_revision_accepts_ref_prefix() {
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Revision(ObjectName {
            revision: "ref:refs/heads/main".to_string(),
        })),
    });

    let result = test_macro(selector).unwrap();
    assert_eq!(result, "ref:refs/heads/main");
}

#[test]
fn test_resolve_revision_accepts_tree_suffix() {
    let selector = Some(ObjectSelector {
        selector: Some(Selector::Revision(ObjectName {
            revision: "main^{tree}".to_string(),
        })),
    });

    let result = test_macro(selector).unwrap();
    assert_eq!(result, "main^{tree}");
}