import subprocess
import hashlib
import json
import sys
import pytest
from lib_py.agents.sanitize import sanitize_herdr_agent_name

def test_sanitize_sibling_workspace_non_collision():
    """
    Verifies that sibling workspaces with identical prefix and suffix
    do NOT collapse into the same 32-character sanitized herdr agent name.
    """
    workspaces = [
        "canary-projects-educative-export-tools-creator-claude",
        "canary-projects-getting-started-a2a-creator-claude",
        "canary-projects-multi-agent-mux-creator-claude",
        "canary-projects-pu-riverpod-cookbook-creator-claude",
    ]
    sanitized = [sanitize_herdr_agent_name(w) for w in workspaces]
    
    # 1. All lengths <= 32
    for s in sanitized:
        assert len(s) <= 32, f"Length exceeds 32: {s}"
        assert len(s) == 32, f"Expected 32 chars for long names: {s}"
    
    # 2. All names are unique (0 collisions)
    assert len(set(sanitized)) == len(workspaces), f"Collisions detected: {sanitized}"

def test_sanitize_bash_python_parity(mam_sandbox):
    """
    Verifies that bash _sanitize_herdr_agent_name and Python sanitize_herdr_agent_name
    produce byte-for-byte identical output across various edge cases.
    """
    test_cases = [
        "canary-projects-multi-agent-mux-creator-claude",
        "canary-projects-educative-export-tools-creator-claude",
        "canary-projects-getting-started-a2a-creator-claude",
        "canary-projects-pu-riverpod-cookbook-creator-claude",
        "short-name",
        "UPPER_CASE_123.dots",
        "123_starts_digit",
        "_underscore_leading",
        "",
        "exact-32-chars-long-name-1234567",
        "exact-33-chars-long-name-12345678",
    ]
    lib_path = mam_sandbox / ".agents" / "skills" / "lib.sh"
    
    for case in test_cases:
        py_res = sanitize_herdr_agent_name(case)
        cmd = f"""
        source {lib_path}
        _sanitize_herdr_agent_name "{case}"
        """
        bash_res = subprocess.check_output(["bash", "-c", cmd]).decode().strip()
        assert py_res == bash_res, f"Mismatch for '{case}': Python={py_res} vs Bash={bash_res}"

def test_mock_herdr_error_formatting_and_abort(mock_herdr, mock_agents):
    """
    Verifies that mock herdr error output matches real Herdr 0.8.0 format
    and triggers lib.sh early abort regex.
    """
    import re
    abort_regex = re.compile(r"^usage:|unknown option|unknown flag|missing required|invalid_agent_name|^error:", re.IGNORECASE)
    mock_bin = str(mock_agents / "herdr")
    
    # 1. Unknown flag
    res_unknown = subprocess.run([mock_bin, "agent", "start", "testagent", "--kind", "claude", "--pane", "w1:p1", "--env", "FOO=BAR"], capture_output=True, text=True)
    assert res_unknown.returncode != 0
    assert abort_regex.search(res_unknown.stderr) is not None, f"Stderr did not match abort regex: {res_unknown.stderr}"
    assert "unknown option: --env" in res_unknown.stderr

    # 2. Missing required --pane
    res_missing = subprocess.run([mock_bin, "agent", "start", "testagent", "--kind", "claude"], capture_output=True, text=True)
    assert res_missing.returncode != 0
    assert abort_regex.search(res_missing.stderr) is not None, f"Stderr did not match abort regex: {res_missing.stderr}"
    assert "missing required --pane" in res_missing.stderr

    # 3. Invalid agent name
    res_badname = subprocess.run([mock_bin, "agent", "start", "BAD_NAME", "--kind", "claude", "--pane", "w1:p1"], capture_output=True, text=True)
    assert res_badname.returncode != 0
    assert abort_regex.search(res_badname.stderr) is not None, f"Stderr did not match abort regex: {res_badname.stderr}"
    assert "invalid_agent_name" in res_badname.stderr