# -*- coding: utf-8
"""
Steps for behavioral style tests are defined in this module.
Each step is defined by the string decorating it.
This string is used to call the step in "*.feature" file.
"""
from __future__ import unicode_literals, print_function

import pexpect
import subprocess
import tempfile

from behave import when, then
from textwrap import dedent
import wrappers


@when("we list databases")
def step_list_databases(context):
    cmd = ["pgcli", "--list"]
    context.cmd_output = subprocess.check_output(cmd, cwd=context.package_root)


@then("we see list of databases")
def step_see_list_databases(context):
    assert b"List of databases" in context.cmd_output
    assert b"postgres" in context.cmd_output
    context.cmd_output = None


@when("we run dbcli")
def step_run_cli(context):
    wrappers.run_cli(context)


@when("we launch dbcli using {arg}")
def step_run_cli_using_arg(context, arg):
    prompt_check = False
    currentdb = None
    if arg == "--username":
        arg = "--username={}".format(context.conf["user"])
    if arg == "--user":
        arg = "--user={}".format(context.conf["user"])
    if arg == "--port":
        arg = "--port={}".format(context.conf["port"])
    if arg == "--password":
        arg = "--password"
        prompt_check = False
    # This uses the mock_pg_service.conf file in fixtures folder.
    if arg == "dsn_password":
        arg = "service=mock_postgres --password"
        prompt_check = False
        currentdb = "postgres"
    wrappers.run_cli(
        context, run_args=[arg], prompt_check=prompt_check, currentdb=currentdb
    )


@when("we wait for prompt")
def step_wait_prompt(context):
    wrappers.wait_prompt(context)


@when('we send "ctrl + d"')
def step_ctrl_d(context):
    """
    Send Ctrl + D to hopefully exit.
    """
    # turn off pager before exiting
    context.cli.sendline("\pset pager off")
    wrappers.wait_prompt(context)
    context.cli.sendcontrol("d")
    context.cli.expect_exact(pexpect.EOF, timeout=15)
    context.exit_sent = True


@when('we send "\?" command')
def step_send_help(context):
    """
    Send \? to see help.
    """
    context.cli.sendline("\?")


@when("we send partial select command")
def step_send_partial_select_command(context):
    """
    Send `SELECT a` to see completion.
    """
    context.cli.sendline("SELECT a")


@then("we see error message")
def step_see_error_message(context):
    wrappers.expect_exact(context, 'column "a" does not exist', timeout=2)
    wrappers.wait_prompt(context)


@when("we send source command")
def step_send_source_command(context):
    context.tmpfile_sql_help = tempfile.NamedTemporaryFile(prefix="pgcli_")
    context.tmpfile_sql_help.write(b"\?")
    context.tmpfile_sql_help.flush()
    context.cli.sendline("\i {0}".format(context.tmpfile_sql_help.name))
    wrappers.expect_exact(context, context.conf["pager_boundary"] + "\r\n", timeout=5)


@when("we run query to check application_name")
def step_check_application_name(context):
    context.cli.sendline(
        "SELECT 'found' FROM pg_stat_activity WHERE application_name = 'pgcli' HAVING COUNT(*) > 0;"
    )


@then("we see found")
def step_see_found(context):
    wrappers.expect_exact(
        context,
        context.conf["pager_boundary"]
        + "\r"
        + dedent(
            """
            +------------+\r
            | ?column?   |\r
            |------------|\r
            | found      |\r
            +------------+\r
            SELECT 1\r
        """
        )
        + context.conf["pager_boundary"],
        timeout=5,
    )


@then("we confirm the destructive warning")
def step_confirm_destructive_command(context):
    """Confirm destructive command."""
    wrappers.expect_exact(
        context,
        "You're about to run a destructive command.\r\nDo you want to proceed? (y/n):",
        timeout=2,
    )
    context.cli.sendline("y")


@then("we send password")
def step_send_password(context):
    wrappers.expect_exact(context, "Password for", timeout=5)
    context.cli.sendline(context.conf["pass"] or "DOES NOT MATTER")
