mod common;

use gitks::pb::*;

#[test]
fn test_list_branches() {
    let (_dir, gb) = common::setup_bare_repo();
    let result = gb
        .list_branches(ListBranchesRequest {
            repository: None,
            pattern: String::new(),
            merged_into_head: false,
            not_merged_into_head: false,
            pagination: None,
            sort_direction: 0,
        })
        .expect("list_branches");
    let names: Vec<String> = result.branches.iter().map(|b| b.name.clone()).collect();
    assert!(names.contains(&"feature".to_string()));
    assert!(names.contains(&"main".to_string()));
    assert!(result.branches.len() >= 2);
}

#[test]
fn test_list_branches_merged_filter() {
    let (_dir, gb) = common::setup_bare_repo();

    let merged = gb
        .list_branches(ListBranchesRequest {
            repository: None,
            pattern: String::new(),
            merged_into_head: true,
            not_merged_into_head: false,
            pagination: None,
            sort_direction: 0,
        })
        .expect("list_branches merged");

    let not_merged = gb
        .list_branches(ListBranchesRequest {
            repository: None,
            pattern: String::new(),
            merged_into_head: false,
            not_merged_into_head: true,
            pagination: None,
            sort_direction: 0,
        })
        .expect("list_branches not merged");

    let merged_names: Vec<&str> = merged.branches.iter().map(|b| b.name.as_str()).collect();
    let not_merged_names: Vec<&str> = not_merged
        .branches
        .iter()
        .map(|b| b.name.as_str())
        .collect();

    assert!(
        merged_names.contains(&"main"),
        "main should be merged into HEAD, got: {:?}",
        merged_names
    );
    assert!(
        not_merged_names.contains(&"feature"),
        "feature should NOT be merged into HEAD, got: {:?}",
        not_merged_names
    );
}

#[test]
fn test_get_branch() {
    let (_dir, gb) = common::setup_bare_repo();
    let branch = gb
        .get_branch(GetBranchRequest {
            repository: None,
            name: "feature".into(),
        })
        .expect("get_branch");
    assert_eq!(branch.full_ref, "refs/heads/feature");
    let oid = branch.target_oid.unwrap();
    assert!(!oid.value.is_empty());
    assert_eq!(oid.value.len(), 20);
    assert_eq!(oid.hex.len(), 40);
}

#[test]
fn test_branch_pagination() {
    let (_dir, gb) = common::setup_bare_repo();
    let result = gb
        .list_branches(ListBranchesRequest {
            repository: None,
            pattern: String::new(),
            merged_into_head: false,
            not_merged_into_head: false,
            pagination: Some(Pagination {
                page_size: 1,
                page_token: String::new(),
            }),
            sort_direction: 0,
        })
        .expect("list_branches page 1");
    let page_info = result.page_info.unwrap();
    assert_eq!(result.branches.len(), 1);
    assert!(page_info.has_next_page);

    let result2 = gb
        .list_branches(ListBranchesRequest {
            repository: None,
            pattern: String::new(),
            merged_into_head: false,
            not_merged_into_head: false,
            pagination: Some(Pagination {
                page_size: 1,
                page_token: page_info.next_page_token,
            }),
            sort_direction: 0,
        })
        .expect("list_branches page 2");
    assert!(!result2.branches.is_empty());
    assert_ne!(result.branches[0].name, result2.branches[0].name);
}

#[test]
fn test_create_and_delete_branch() {
    let (_dir, gb) = common::setup_bare_repo();
    let branch = gb
        .create_branch(CreateBranchRequest {
            repository: None,
            name: "new-branch".into(),
            start_point: Some(ObjectSelector {
                selector: Some(object_selector::Selector::Revision(ObjectName {
                    revision: "main".into(),
                })),
            }),
            force: false,
        })
        .expect("create_branch");
    assert_eq!(branch.name, "new-branch");

    gb.delete_branch(DeleteBranchRequest {
        repository: None,
        name: "new-branch".into(),
        force: true,
    })
    .expect("delete_branch");

    let result = gb.get_branch(GetBranchRequest {
        repository: None,
        name: "new-branch".into(),
    });
    assert!(result.is_err(), "deleted branch should not exist");
}

#[test]
fn test_rename_branch() {
    let (_dir, gb) = common::setup_bare_repo();
    gb.create_branch(CreateBranchRequest {
        repository: None,
        name: "to-rename".into(),
        start_point: Some(ObjectSelector {
            selector: Some(object_selector::Selector::Revision(ObjectName {
                revision: "main".into(),
            })),
        }),
        force: false,
    })
    .expect("create branch for rename");

    let renamed = gb
        .rename_branch(RenameBranchRequest {
            repository: None,
            old_name: "to-rename".into(),
            new_name: "renamed".into(),
        })
        .expect("rename_branch");
    assert_eq!(renamed.name, "renamed");

    let old = gb.get_branch(GetBranchRequest {
        repository: None,
        name: "to-rename".into(),
    });
    assert!(old.is_err(), "old branch name should not exist");
}

#[test]
fn test_compare_branch() {
    let (_dir, gb) = common::setup_bare_repo();
    let result = gb
        .compare_branch(CompareBranchRequest {
            repository: None,
            source_branch: "feature".into(),
            target_branch: "main".into(),
        })
        .expect("compare_branch");

    assert!(
        result.ahead_by > 0 || result.behind_by > 0,
        "branches should differ"
    );
    assert!(result.merge_base.is_some(), "should find merge base");
}