# Python imports
import argparse
import subprocess
import threading

# Lib imports

# Application imports
import pylspclient
from .capabilities import Capabilities



class ReadPipe(threading.Thread):
    def __init__(self, pipe):
        threading.Thread.__init__(self)
        self.pipe = pipe

    def run(self):
        line = self.pipe.readline().decode('utf-8')
        while line:
            line = self.pipe.readline().decode('utf-8')



if __name__ == "__main__":
    parser    = argparse.ArgumentParser(description = 'PyLSPClient example with clangd')
    parser.add_argument('clangd_path', type=str, default="/usr/bin/clangd-6.0",  help = 'the clangd path', nargs="?")
    args      = parser.parse_args()


    p         = subprocess.Popen([args.clangd_path], stdin = subprocess.PIPE, stdout = subprocess.PIPE, stderr = subprocess.PIPE)
    read_pipe = ReadPipe(p.stderr)
    read_pipe.start()

    json_rpc_endpoint = pylspclient.JsonRpcEndpoint(p.stdin, p.stdout)
    # To work with socket: sock_fd = sock.makefile()
    lsp_endpoint      = pylspclient.LspEndpoint(json_rpc_endpoint)
    lsp_client        = pylspclient.LspClient(lsp_endpoint)
    root_uri          = 'file:///home/osboxes/projects/ctest/'
    workspace_folders = [{'name': 'python-lsp', 'uri': root_uri}]

    print(lsp_client.initialize(p.pid, None, root_uri, None, Capabilities.data, "off", workspace_folders))
    print(lsp_client.initialized())

    file_path  = "/home/osboxes/projects/ctest/test.c"
    uri        = f"file://{file_path}"
    text       = open(file_path, "r").read()
    languageId = pylspclient.lsp_structs.LANGUAGE_IDENTIFIER.C
    version    = 1

    lsp_client.didOpen(pylspclient.lsp_structs.TextDocumentItem(uri, languageId, version, text))
    try:
        symbols = lsp_client.documentSymbol(pylspclient.lsp_structs.TextDocumentIdentifier(uri))
        for symbol in symbols:
            print(symbol.name)
    except pylspclient.lsp_structs.ResponseError:
        print("Failed to load document symbols...")

    lsp_client.definition(
        pylspclient.lsp_structs.TextDocumentIdentifier(uri),
        pylspclient.lsp_structs.Position(14, 4)
    )

    lsp_client.signatureHelp(
        pylspclient.lsp_structs.TextDocumentIdentifier(uri),
        pylspclient.lsp_structs.Position(14, 4)
    )

    lsp_client.definition(
        pylspclient.lsp_structs.TextDocumentIdentifier(uri),
        pylspclient.lsp_structs.Position(14, 4)
    )

    lsp_client.completion(
        pylspclient.lsp_structs.TextDocumentIdentifier(uri),
        pylspclient.lsp_structs.Position(14, 4),
        pylspclient.lsp_structs.CompletionContext(pylspclient.lsp_structs.CompletionTriggerKind.Invoked)
    )

    lsp_client.shutdown()
    lsp_client.exit()