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import openai

# import utils
plugin_root = vim.eval("s:plugin_root")
vim.command(f"py3file {plugin_root}/py/utils.py")

options = vim.eval("options")
request_options = make_request_options()

openai.api_key = load_api_key()

file_content = vim.eval('trim(join(getline(1, "$"), "\n"))')
initial_prompt = '\n'.join(options['initial_prompt'])
prompt = f"{initial_prompt}\n{file_content}"

lines = prompt.splitlines()
messages = []

def parse_messages():
    file_content = vim.eval('trim(join(getline(1, "$"), "\n"))')
    lines = file_content.splitlines()
    messages = []
    for line in lines:
        if line.startswith(">>> system"):
            messages.append({"role": "system", "content": ""})
            continue
        if line.startswith(">>> user"):
            messages.append({"role": "user", "content": ""})
            continue
        if line.startswith("<<< assistant"):
            messages.append({"role": "assistant", "content": ""})
            continue
        if not messages:
            continue
        messages[-1]["content"] += "\n" + line
    return messages

messages = parse_messages()

if not messages:
    # roles not found, put whole file content as an user prompt
    vim.command("normal! ggO>>> user\n")
    vim.command("normal! G")
    vim.command("let &ul=&ul") # breaks undo sequence (https://vi.stackexchange.com/a/29087)
    vim.command("redraw")
    messages = parse_messages()

for message in messages:
    # strip newlines from the content as it causes empty responses
    message["content"] = message["content"].strip()

try:
    if messages[-1]["content"].strip():
        vim.command("normal! Go\n<<< assistant\n\n")
        vim.command("redraw")

        print('Answering...')
        vim.command("redraw")

        response = openai.ChatCompletion.create(messages=messages, stream=True, **request_options)

        generating_text = False
        for resp in response:
            text = resp['choices'][0]['delta'].get('content', '')
            if not text.strip() and not generating_text:
                continue # trim newlines from the beginning

            generating_text = True
            vim.command("normal! a" + text)
            vim.command("redraw")

        vim.command("normal! a\n\n>>> user\n\n")
        vim.command("redraw")
except KeyboardInterrupt:
    vim.command("normal! a Ctrl-C...")
except openai.error.Timeout:
    vim.command("normal! aRequest timeout...")