vibed/nbd/tests/integration.rs

//! Integration tests for `nbd`.
//!
//! Tests full command flows (create → read → list → update) against a real
//! temporary directory and verifies that directory traversal correctly locates
//! `.nbd/` when the binary is run from a nested subdirectory.

use std::fs;
use std::path::{Path, PathBuf};
use tempfile::TempDir;

// ── Test environment helper ───────────────────────────────────────────────────

/// A temporary project environment with `.nbd/tickets/` already initialised.
struct TestEnv {
    /// Keep `TempDir` alive — dropping it would delete the directory.
    _tmp: TempDir,
    /// The project root (the directory that contains `.nbd/`).
    pub root: PathBuf,
}

impl TestEnv {
    /// Create a fresh temporary environment with `.nbd/tickets/` ready.
    fn new() -> Self {
        let tmp = tempfile::tempdir().expect("failed to create tempdir");
        let root = tmp.path().to_path_buf();
        fs::create_dir_all(root.join(".nbd").join("tickets"))
            .expect("failed to create .nbd/tickets/");
        TestEnv { _tmp: tmp, root }
    }

    /// Spawn `nbd` with `args`, using `dir` as the working directory.
    fn run_from(&self, dir: &Path, args: &[&str]) -> std::process::Output {
        std::process::Command::new(env!("CARGO_BIN_EXE_nbd"))
            .args(args)
            .current_dir(dir)
            .output()
            .expect("failed to spawn nbd")
    }

    /// Spawn `nbd` with `args` from the project root.
    fn run(&self, args: &[&str]) -> std::process::Output {
        self.run_from(&self.root, args)
    }

    /// Run `nbd create` with the given extra arguments and return the printed
    /// ticket ID extracted from stdout.
    fn create(&self, extra_args: &[&str]) -> String {
        let mut args = vec!["create"];
        args.extend_from_slice(extra_args);
        let output = self.run(&args);
        assert!(
            output.status.success(),
            "create failed: {}",
            String::from_utf8_lossy(&output.stderr)
        );
        let stdout = String::from_utf8(output.stdout).unwrap();
        stdout
            .lines()
            .find(|l| l.trim_start().starts_with("ID:"))
            .and_then(|l| l.split_whitespace().last())
            .expect("could not extract ID from create output")
            .to_string()
    }
}

// ── Tests ─────────────────────────────────────────────────────────────────────

/// `create` then `read` produces a ticket with the expected field values.
#[test]
fn create_and_read_roundtrip() {
    let env = TestEnv::new();

    let id = env.create(&[
        "--title",
        "Fix login bug",
        "--body",
        "Users cannot log in with email addresses containing +",
        "--priority",
        "8",
        "--type",
        "bug",
    ]);

    let read = env.run(&["read", &id]);
    assert!(
        read.status.success(),
        "read failed: {}",
        String::from_utf8_lossy(&read.stderr)
    );
    let stdout = String::from_utf8(read.stdout).unwrap();
    assert!(stdout.contains(&id), "output should contain the ID");
    assert!(
        stdout.contains("Fix login bug"),
        "output should contain the title"
    );
    assert!(
        stdout.contains("Users cannot log in"),
        "output should contain the body"
    );
    assert!(stdout.contains('8'), "output should contain the priority");
    assert!(stdout.contains("bug"), "output should contain the type");
}

/// `list` displays all previously created tickets.
#[test]
fn list_shows_created_tickets() {
    let env = TestEnv::new();

    env.create(&["--title", "First ticket"]);
    env.create(&["--title", "Second ticket"]);

    let list = env.run(&["list"]);
    assert!(list.status.success());
    let stdout = String::from_utf8(list.stdout).unwrap();
    assert!(
        stdout.contains("First ticket"),
        "list should contain first ticket"
    );
    assert!(
        stdout.contains("Second ticket"),
        "list should contain second ticket"
    );
}

/// `update` changes only the specified fields; others are preserved.
#[test]
fn update_merges_correctly() {
    let env = TestEnv::new();

    let id = env.create(&[
        "--title",
        "Original title",
        "--priority",
        "5",
        "--type",
        "task",
    ]);

    // Update only the status; title and priority should be unchanged.
    let update = env.run(&["update", &id, "--status", "in_progress"]);
    assert!(
        update.status.success(),
        "update failed: {}",
        String::from_utf8_lossy(&update.stderr)
    );

    let read = env.run(&["read", &id]);
    let stdout = String::from_utf8(read.stdout).unwrap();
    assert!(
        stdout.contains("in_progress"),
        "status should be updated to in_progress"
    );
    assert!(
        stdout.contains("Original title"),
        "title should be unchanged"
    );
    assert!(stdout.contains('5'), "priority should be unchanged");
}

/// `read` works when executed from a nested subdirectory (traversal test).
#[test]
fn traversal_from_subdir() {
    let env = TestEnv::new();

    let id = env.create(&["--title", "Traversal test"]);

    // Create a nested subdirectory two levels deep.
    let subdir = env.root.join("sub").join("dir");
    fs::create_dir_all(&subdir).unwrap();

    let read = env.run_from(&subdir, &["read", &id]);
    assert!(
        read.status.success(),
        "traversal failed: {}",
        String::from_utf8_lossy(&read.stderr)
    );
    let stdout = String::from_utf8(read.stdout).unwrap();
    assert!(
        stdout.contains("Traversal test"),
        "output should contain the title"
    );
}

/// `read` with an unknown ID exits non-zero and mentions the ID in stderr.
#[test]
fn error_on_unknown_id() {
    let env = TestEnv::new();

    let result = env.run(&["read", "ffffff"]);
    assert!(
        !result.status.success(),
        "reading an unknown ID should exit non-zero"
    );
    let stderr = String::from_utf8(result.stderr).unwrap();
    assert!(
        stderr.contains("ffffff"),
        "error message should mention the ticket ID, got: {stderr}"
    );
}

/// `create --json` outputs valid JSON containing the correct field values.
#[test]
fn create_with_json_flag() {
    let env = TestEnv::new();

    let output = env.run(&[
        "create",
        "--title",
        "JSON test",
        "--priority",
        "7",
        "--json",
    ]);
    assert!(output.status.success());

    let stdout = String::from_utf8(output.stdout).unwrap();
    let parsed: serde_json::Value =
        serde_json::from_str(&stdout).expect("--json output should be valid JSON");
    assert_eq!(parsed["title"], "JSON test");
    assert_eq!(parsed["priority"], 7);
}

/// `list --json` outputs a valid JSON array with one object per ticket.
#[test]
fn list_with_json_flag() {
    let env = TestEnv::new();

    env.create(&["--title", "First"]);
    env.create(&["--title", "Second"]);

    let output = env.run(&["list", "--json"]);
    assert!(output.status.success());

    let stdout = String::from_utf8(output.stdout).unwrap();
    let parsed: serde_json::Value =
        serde_json::from_str(&stdout).expect("--json list output should be valid JSON");
    assert!(parsed.is_array(), "output should be a JSON array");
    assert_eq!(
        parsed.as_array().unwrap().len(),
        2,
        "array should contain exactly two tickets"
    );
}

/// `create` writes a JSON file that does NOT contain an `"id"` key.
#[test]
fn created_file_omits_id_field() {
    let env = TestEnv::new();

    let id = env.create(&["--title", "ID key check"]);

    // Read the raw file bytes and check the JSON.
    let ticket_file = env
        .root
        .join(".nbd")
        .join("tickets")
        .join(format!("{id}.json"));
    let contents = fs::read_to_string(&ticket_file).expect("ticket file should exist");
    let parsed: serde_json::Value =
        serde_json::from_str(&contents).expect("ticket file should be valid JSON");
    assert!(
        parsed.get("id").is_none(),
        "written ticket file must not contain an 'id' key, got: {contents}"
    );
}

/// `read --json` outputs the correct id even though the file has no `id` field.
#[test]
fn read_json_contains_correct_id() {
    let env = TestEnv::new();

    let id = env.create(&["--title", "ID injection check"]);

    let output = env.run(&["read", &id, "--json"]);
    assert!(output.status.success());
    let stdout = String::from_utf8(output.stdout).unwrap();
    let parsed: serde_json::Value =
        serde_json::from_str(&stdout).expect("--json read output should be valid JSON");
    assert_eq!(
        parsed["id"], id,
        "read --json output must contain the correct id"
    );
}

/// `migrate` re-writes old-format files that contain a stale `"id"` key.
#[test]
fn migrate_rewrites_old_format_files() {
    let env = TestEnv::new();

    // Manually write an old-format ticket file with "id" in the JSON body.
    let old_json = r#"{"id":"abcdef","title":"Old format ticket","body":"","priority":5,"status":"todo","dependencies":[],"ticket_type":"task"}"#;
    let ticket_file = env.root.join(".nbd").join("tickets").join("abcdef.json");
    fs::write(&ticket_file, old_json).unwrap();

    let output = env.run(&["migrate"]);
    assert!(
        output.status.success(),
        "migrate failed: {}",
        String::from_utf8_lossy(&output.stderr)
    );

    // Verify the file no longer contains the "id" key.
    let contents = fs::read_to_string(&ticket_file).unwrap();
    let parsed: serde_json::Value = serde_json::from_str(&contents).unwrap();
    assert!(
        parsed.get("id").is_none(),
        "migrated file must not contain 'id', got: {contents}"
    );
}

/// `migrate --dry-run` does not modify files.
#[test]
fn migrate_dry_run_does_not_write() {
    let env = TestEnv::new();

    let old_json = r#"{"id":"112233","title":"Dry run test","body":"","priority":5,"status":"todo","dependencies":[],"ticket_type":"task"}"#;
    let ticket_file = env.root.join(".nbd").join("tickets").join("112233.json");
    fs::write(&ticket_file, old_json).unwrap();

    let output = env.run(&["migrate", "--dry-run"]);
    assert!(output.status.success());

    // File must remain unchanged.
    let contents = fs::read_to_string(&ticket_file).unwrap();
    assert_eq!(contents, old_json, "dry-run must not modify files");
}

/// `migrate` exits zero even when some ticket files cannot be parsed.
#[test]
fn migrate_exits_zero_on_parse_errors() {
    let env = TestEnv::new();

    let bad_json = b"{ not valid json at all }";
    let ticket_file = env.root.join(".nbd").join("tickets").join("badbad.json");
    fs::write(&ticket_file, bad_json).unwrap();

    let output = env.run(&["migrate"]);
    assert!(
        output.status.success(),
        "migrate should exit zero even with parse errors"
    );

    // File must remain unchanged.
    let contents = fs::read(&ticket_file).unwrap();
    assert_eq!(
        contents.as_slice(),
        bad_json,
        "errored file must be left unchanged"
    );
}

/// `migrate --json` outputs valid JSON with the expected keys.
#[test]
fn migrate_with_json_flag() {
    let env = TestEnv::new();

    // Write one old-format and one valid ticket.
    env.create(&["--title", "Normal ticket"]);
    let old_json = r#"{"id":"xxyyzz","title":"Legacy","body":"","priority":5,"status":"todo","dependencies":[],"ticket_type":"task"}"#;
    let ticket_file = env.root.join(".nbd").join("tickets").join("xxyyzz.json");
    fs::write(&ticket_file, old_json).unwrap();

    let output = env.run(&["migrate", "--json"]);
    assert!(output.status.success());

    let stdout = String::from_utf8(output.stdout).unwrap();
    let parsed: serde_json::Value =
        serde_json::from_str(&stdout).expect("--json output should be valid JSON");
    assert!(
        parsed.get("updated").is_some(),
        "JSON should have 'updated' key"
    );
    assert!(
        parsed.get("already_current").is_some(),
        "JSON should have 'already_current' key"
    );
    assert!(
        parsed.get("errors").is_some(),
        "JSON should have 'errors' key"
    );
    assert_eq!(parsed["updated"], 1, "one file should be migrated");
    assert_eq!(parsed["already_current"], 1, "one file should be current");
}

/// `read` accepts a unique prefix instead of a full 6-char ID.
#[test]
fn read_with_prefix() {
    let env = TestEnv::new();
    let id = env.create(&["--title", "Prefix read test"]);

    // Use a 3-char prefix.
    let prefix = &id[..3];
    let read = env.run(&["read", prefix]);
    assert!(
        read.status.success(),
        "read with prefix failed: {}",
        String::from_utf8_lossy(&read.stderr)
    );
    let stdout = String::from_utf8(read.stdout).unwrap();
    assert!(
        stdout.contains("Prefix read test"),
        "output should contain the title"
    );
}

/// `update` accepts a unique prefix instead of a full 6-char ID.
#[test]
fn update_with_prefix() {
    let env = TestEnv::new();
    let id = env.create(&["--title", "Prefix update test"]);

    let prefix = &id[..3];
    let update = env.run(&["update", prefix, "--status", "done"]);
    assert!(
        update.status.success(),
        "update with prefix failed: {}",
        String::from_utf8_lossy(&update.stderr)
    );

    let read = env.run(&["read", &id, "--json"]);
    let stdout = String::from_utf8(read.stdout).unwrap();
    let parsed: serde_json::Value = serde_json::from_str(&stdout).unwrap();
    assert_eq!(parsed["status"], "done", "status should be updated to done");
}

/// An ambiguous prefix exits non-zero with an informative message.
#[test]
fn ambiguous_prefix_exits_nonzero() {
    let env = TestEnv::new();

    // We can't reliably generate two IDs that share a 3-char prefix, but we
    // can manually write two ticket files whose names share a prefix.
    let ticket_dir = env.root.join(".nbd").join("tickets");
    let json = r#"{"title":"A","body":"","priority":5,"status":"todo","dependencies":[],"ticket_type":"task"}"#;
    fs::write(ticket_dir.join("ff0001.json"), json).unwrap();
    fs::write(ticket_dir.join("ff0002.json"), json).unwrap();

    let result = env.run(&["read", "ff0"]);
    assert!(
        !result.status.success(),
        "ambiguous prefix should exit non-zero"
    );
    let stderr = String::from_utf8(result.stderr).unwrap();
    assert!(
        stderr.contains("ambiguous"),
        "error should say ambiguous, got: {stderr}"
    );
}

/// `nbd init` creates `.nbd/tickets/` in a fresh directory.
#[test]
fn init_creates_tickets_dir() {
    let tmp = tempfile::tempdir().expect("failed to create tempdir");
    let root = tmp.path();

    let output = std::process::Command::new(env!("CARGO_BIN_EXE_nbd"))
        .args(["init"])
        .current_dir(root)
        .output()
        .expect("failed to spawn nbd");

    assert!(
        output.status.success(),
        "init failed: {}",
        String::from_utf8_lossy(&output.stderr)
    );
    assert!(
        root.join(".nbd").join("tickets").is_dir(),
        ".nbd/tickets/ should be created"
    );
}

/// `nbd init` is idempotent — running it twice succeeds.
#[test]
fn init_is_idempotent() {
    let tmp = tempfile::tempdir().expect("failed to create tempdir");
    let root = tmp.path();

    for _ in 0..2 {
        let output = std::process::Command::new(env!("CARGO_BIN_EXE_nbd"))
            .args(["init"])
            .current_dir(root)
            .output()
            .expect("failed to spawn nbd");
        assert!(
            output.status.success(),
            "init failed on repeat: {}",
            String::from_utf8_lossy(&output.stderr)
        );
    }
    assert!(root.join(".nbd").join("tickets").is_dir());
}

/// `nbd init --json` outputs valid JSON with a `root` field.
#[test]
fn init_with_json_flag() {
    let tmp = tempfile::tempdir().expect("failed to create tempdir");
    let root = tmp.path();

    let output = std::process::Command::new(env!("CARGO_BIN_EXE_nbd"))
        .args(["init", "--json"])
        .current_dir(root)
        .output()
        .expect("failed to spawn nbd");

    assert!(output.status.success());
    let stdout = String::from_utf8(output.stdout).unwrap();
    let parsed: serde_json::Value =
        serde_json::from_str(&stdout).expect("--json output should be valid JSON");
    assert!(
        parsed.get("root").is_some(),
        "JSON should have 'root' field, got: {stdout}"
    );
}

/// `nbd ready` returns only unblocked, non-done tickets.
#[test]
fn ready_returns_unblocked_tickets() {
    let env = TestEnv::new();

    // A: no deps, todo → ready
    let a = env.create(&["--title", "Ticket A"]);
    // B: depends on A, todo → not ready
    env.run(&["create", "--title", "Ticket B", "--deps", &a, "--json"]);
    // C: no deps, done → not ready (already done)
    let c = env.create(&["--title", "Ticket C"]);
    env.run(&["update", &c, "--status", "done"]);

    let output = env.run(&["ready", "--json"]);
    assert!(
        output.status.success(),
        "ready failed: {}",
        String::from_utf8_lossy(&output.stderr)
    );
    let stdout = String::from_utf8(output.stdout).unwrap();
    let parsed: serde_json::Value = serde_json::from_str(&stdout).expect("should be valid JSON");
    let arr = parsed.as_array().expect("should be array");
    assert_eq!(arr.len(), 1, "only A should be ready");
    assert_eq!(arr[0]["title"], "Ticket A");
}

/// `nbd ready` includes ticket B after its dependency A is marked done.
#[test]
fn ready_updates_after_dep_done() {
    let env = TestEnv::new();

    let a = env.create(&["--title", "Dep A"]);
    env.run(&["create", "--title", "Blocked B", "--deps", &a, "--json"]);

    // Before marking A done: only A is ready.
    let before = env.run(&["ready", "--json"]);
    let before_str = String::from_utf8(before.stdout).unwrap();
    let before_parsed: serde_json::Value = serde_json::from_str(&before_str).unwrap();
    assert_eq!(before_parsed.as_array().unwrap().len(), 1);

    // Mark A done.
    env.run(&["update", &a, "--status", "done"]);

    // Now B is ready.
    let after = env.run(&["ready", "--json"]);
    let after_str = String::from_utf8(after.stdout).unwrap();
    let after_parsed: serde_json::Value = serde_json::from_str(&after_str).unwrap();
    let arr = after_parsed.as_array().unwrap();
    assert_eq!(arr.len(), 1, "only B should be ready now");
    assert_eq!(arr[0]["title"], "Blocked B");
}

/// `nbd ready` returns an empty array when no tickets are actionable.
#[test]
fn ready_empty_when_all_done() {
    let env = TestEnv::new();

    let id = env.create(&["--title", "Finished"]);
    env.run(&["update", &id, "--status", "done"]);

    let output = env.run(&["ready", "--json"]);
    assert!(output.status.success());
    let stdout = String::from_utf8(output.stdout).unwrap();
    let parsed: serde_json::Value = serde_json::from_str(&stdout).unwrap();
    assert_eq!(
        parsed.as_array().unwrap().len(),
        0,
        "no ready tickets when all are done"
    );
}

/// `update --deps` replaces the dependency list.
#[test]
fn update_deps_replaces_list() {
    let env = TestEnv::new();

    // Create two tickets to use as deps.
    let dep1 = env.create(&["--title", "Dep one"]);
    let dep2 = env.create(&["--title", "Dep two"]);
    let main_id = env.create(&["--title", "Main ticket"]);

    // Add dep1 as a dependency.
    let update = env.run(&["update", &main_id, "--deps", &dep1]);
    assert!(
        update.status.success(),
        "update with deps failed: {}",
        String::from_utf8_lossy(&update.stderr)
    );

    // Replace with dep2.
    let update2 = env.run(&["update", &main_id, "--deps", &dep2]);
    assert!(update2.status.success());

    let read = env.run(&["read", &main_id, "--json"]);
    let stdout = String::from_utf8(read.stdout).unwrap();
    let parsed: serde_json::Value = serde_json::from_str(&stdout).unwrap();
    let deps = parsed["dependencies"].as_array().unwrap();
    assert_eq!(deps.len(), 1, "should have exactly one dependency");
    assert_eq!(deps[0], dep2, "dependency should be dep2");
}