use std::any::{TypeId, type_name};

use fabro_api::types::{DirtyStatus as ApiDirtyStatus, GitContext as ApiGitContext};
use fabro_types::{DirtyStatus, GitContext};
use serde_json::json;

#[test]
fn git_context_reuses_canonical_types() {
    assert_same_type::<ApiGitContext, GitContext>();
    assert_same_type::<ApiDirtyStatus, DirtyStatus>();
}

#[test]
fn dirty_status_serializes_with_snake_case_strings() {
    assert_eq!(
        serde_json::to_value(DirtyStatus::Clean).unwrap(),
        json!("clean")
    );
    assert_eq!(
        serde_json::to_value(DirtyStatus::Dirty).unwrap(),
        json!("dirty")
    );
    assert_eq!(
        serde_json::to_value(DirtyStatus::Unknown).unwrap(),
        json!("unknown")
    );
}

#[test]
fn git_context_with_known_sha_round_trips() {
    let ctx = GitContext {
        origin_url: "https://github.com/acme/widgets".to_string(),
        branch:     "main".to_string(),
        sha:        Some("abc123".to_string()),
        dirty:      DirtyStatus::Clean,
    };
    let json = serde_json::to_value(&ctx).unwrap();
    assert_eq!(
        json,
        json!({
            "origin_url": "https://github.com/acme/widgets",
            "branch": "main",
            "sha": "abc123",
            "dirty": "clean",
        })
    );
    let round_trip: GitContext = serde_json::from_value(json).unwrap();
    assert_eq!(round_trip, ctx);
}

#[test]
fn git_context_omits_absent_sha_on_serialize() {
    let ctx = GitContext {
        origin_url: "https://github.com/acme/widgets".to_string(),
        branch:     "feature/foo".to_string(),
        sha:        None,
        dirty:      DirtyStatus::Unknown,
    };
    let json = serde_json::to_value(&ctx).unwrap();
    assert!(json.get("sha").is_none());
    assert_eq!(json["dirty"], "unknown");
}

#[test]
fn git_context_deserializes_when_sha_is_absent() {
    let ctx: GitContext = serde_json::from_value(json!({
        "origin_url": "https://github.com/acme/widgets",
        "branch": "main",
        "dirty": "dirty",
    }))
    .unwrap();
    assert_eq!(ctx.sha, None);
    assert_eq!(ctx.dirty, DirtyStatus::Dirty);
}

#[test]
fn git_context_tolerates_legacy_push_outcome_field() {
    let ctx: GitContext = serde_json::from_value(json!({
        "origin_url": "https://github.com/acme/widgets",
        "branch": "main",
        "dirty": "clean",
        "push_outcome": { "type": "not_attempted" },
    }))
    .unwrap();
    assert_eq!(ctx.origin_url, "https://github.com/acme/widgets");
    assert_eq!(ctx.dirty, DirtyStatus::Clean);
}

fn assert_same_type<T: 'static, U: 'static>() {
    assert_eq!(
        TypeId::of::<T>(),
        TypeId::of::<U>(),
        "{} should be the same type as {}",
        type_name::<T>(),
        type_name::<U>()
    );
}