import re, json

TOOLS = [
    {"type": "function", "function": {
        "name": "read_file",
        "description": "Read and return the contents of a file.",
        "parameters": {"type": "object",
            "properties": {"path": {"type": "string", "description": "File path to read."}},
            "required": ["path"]}}},
    {"type": "function", "function": {
        "name": "write_file",
        "description": "Create or overwrite a file with the given content.",
        "parameters": {"type": "object",
            "properties": {"path": {"type": "string"}, "content": {"type": "string"}},
            "required": ["path", "content"]}}},
    {"type": "function", "function": {
        "name": "edit_file",
        "description": "Replace an exact substring in a file with new text.",
        "parameters": {"type": "object",
            "properties": {"path": {"type": "string"},
                           "old_string": {"type": "string"},
                           "new_string": {"type": "string"}},
            "required": ["path", "old_string", "new_string"]}}},
    {"type": "function", "function": {
        "name": "list_dir",
        "description": "List the entries in a directory.",
        "parameters": {"type": "object",
            "properties": {"path": {"type": "string"}},
            "required": ["path"]}}},
    {"type": "function", "function": {
        "name": "run_bash",
        "description": "Run a shell command and return its output.",
        "parameters": {"type": "object",
            "properties": {"command": {"type": "string"}},
            "required": ["command"]}}},
]

_TOOLCALL_RE = re.compile(r"<tool_call>\s*(\{.*?\})\s*</tool_call>", re.DOTALL)

def parse_tool_calls(text):
    calls = []
    for m in _TOOLCALL_RE.findall(text):
        try:
            calls.append(json.loads(m))
        except json.JSONDecodeError:
            pass
    return calls