from flask import Flask
from flask import request
from dataclasses import dataclass
from typing import Any, Callable

import config
import database
import utils
from logger import LOGGER

app = Flask(__name__)
calendar_db = database.CalendarDatabase()

# region: API Route

# region: Common

@app.route('/common/salt', methods=['POST'])
def api_common_saltHandle():
    return SmartDbCaller(calendar_db.common_salt, 
    (FormField('username', str, False), ),
    None)

@app.route('/common/login', methods=['POST'])
def api_common_loginHandle():
    # construct client data first
    clientUa = request.user_agent.string
    if request.headers.getlist("X-Forwarded-For"):
        clientIp = request.headers.getlist("X-Forwarded-For")[0]
    else:
        clientIp = request.remote_addr

    return SmartDbCaller(calendar_db.common_login, 
    (FormField('username', str, False), 
    FormField('password', str, False),
    FormField('clientUa', str, False),
    FormField('clientIp', str, False)),
    {
        'clientUa': clientUa,
        'clientIp': clientIp
    })

@app.route('/common/webLogin', methods=['POST'])
def api_common_webLoginHandle():
    # construct client data first
    clientUa = request.user_agent.string
    if request.headers.getlist("X-Forwarded-For"):
        clientIp = request.headers.getlist("X-Forwarded-For")[0]
    else:
        clientIp = request.remote_addr
    
    return SmartDbCaller(calendar_db.common_webLogin, 
    (FormField('username', str, False), 
    FormField('password', str, False),
    FormField('clientUa', str, False),
    FormField('clientIp', str, False)),
    {
        'clientUa': clientUa,
        'clientIp': clientIp
    })

@app.route('/common/logout', methods=['POST'])
def api_common_logoutHandle():
    return SmartDbCaller(calendar_db.common_logout, 
    (FormField('token', str, False), ),
    None)

@app.route('/common/tokenValid', methods=['POST'])
def api_common_tokenValidHandle():
    return SmartDbCaller(calendar_db.common_tokenValid, 
    (FormField('token', str, False), ),
    None)

# endregion

# region: Calendar

@app.route('/calendar/getFull', methods=['POST'])
def api_calendar_getFullHandle():
    return SmartDbCaller(calendar_db.calendar_getFull, 
    (FormField('token', str, False),
    FormField('startDateTime', int, False),
    FormField('endDateTime', int, False)),
    None)

@app.route('/calendar/getList', methods=['POST'])
def api_calendar_getListHandle():
    return SmartDbCaller(calendar_db.calendar_getList, 
    (FormField('token', str, False),
    FormField('startDateTime', int, False),
    FormField('endDateTime', int, False)),
    None)

@app.route('/calendar/getDetail', methods=['POST'])
def api_calendar_getDetailHandle():
    return SmartDbCaller(calendar_db.calendar_getDetail, 
    (FormField('token', str, False),
    FormField('uuid', str, False)),
    None)

@app.route('/calendar/update', methods=['POST'])
def api_calendar_updateHandle():
    return SmartDbCaller(calendar_db.calendar_update, 
    (FormField('token', str, False),
    FormField('uuid', str, False),
    FormField('belongTo', str, True),
    FormField('title', str, True),
    FormField('description', str, True),
    FormField('eventDateTimeStart', int, True),
    FormField('eventDateTimeEnd', int, True),
    FormField('loopRules', str, True),
    FormField('timezoneOffset', int, True),
    FormField('lastChange', str, False)),
    None)

@app.route('/calendar/add', methods=['POST'])
def api_calendar_addHandle():
    return SmartDbCaller(calendar_db.calendar_add, 
    (FormField('token', str, False),
    FormField('belongTo', str, False),
    FormField('title', str, False),
    FormField('description', str, False),
    FormField('eventDateTimeStart', int, False),
    FormField('eventDateTimeEnd', int, False),
    FormField('loopRules', str, False),
    FormField('timezoneOffset', int, False)),
    None)

@app.route('/calendar/delete', methods=['POST'])
def api_calendar_deleteHandle():
    return SmartDbCaller(calendar_db.calendar_delete, 
    (FormField('token', str, False),
    FormField('uuid', str, False),
    FormField('lastChange', str, False)),
    None)

# endregion

# region: Collection

@app.route('/collection/getFullOwn', methods=['POST'])
def api_collection_getFullOwnHandle():
    return SmartDbCaller(calendar_db.collection_getFullOwn, 
    (FormField('token', str, False), ),
    None)

@app.route('/collection/getListOwn', methods=['POST'])
def api_collection_getListOwnHandle():
    return SmartDbCaller(calendar_db.collection_getListOwn, 
    (FormField('token', str, False), ),
    None)

@app.route('/collection/getDetailOwn', methods=['POST'])
def api_collection_getDetailOwnHandle():
    return SmartDbCaller(calendar_db.collection_getDetailOwn, 
    (FormField('token', str, False), 
    FormField('uuid', str, False)),
    None)

@app.route('/collection/addOwn', methods=['POST'])
def api_collection_addOwnHandle():
    return SmartDbCaller(calendar_db.collection_addOwn, 
    (FormField('token', str, False), 
    FormField('name', str, False)),
    None)

@app.route('/collection/updateOwn', methods=['POST'])
def api_collection_updateOwnHandle():
    return SmartDbCaller(calendar_db.collection_updateOwn, 
    (FormField('token', str, False), 
    FormField('uuid', str, False),
    FormField('name', str, False), 
    FormField('lastChange', str, False)),
    None)

@app.route('/collection/deleteOwn', methods=['POST'])
def api_collection_deleteOwnHandle():
    return SmartDbCaller(calendar_db.collection_deleteOwn, 
    (FormField('token', str, False), 
    FormField('uuid', str, False),
    FormField('lastChange', str, False)),
    None)


@app.route('/collection/getSharing', methods=['POST'])
def api_collection_getSharingHandle():
    return SmartDbCaller(calendar_db.collection_getSharing, 
    (FormField('token', str, False), 
    FormField('uuid', str, False)),
    None)

@app.route('/collection/deleteSharing', methods=['POST'])
def api_collection_deleteSharingHandle():
    return SmartDbCaller(calendar_db.collection_deleteSharing, 
    (FormField('token', str, False), 
    FormField('uuid', str, False),
    FormField('target', str, False),
    FormField('lastChange', str, False)),
    None)

@app.route('/collection/addSharing', methods=['POST'])
def api_collection_addSharingHandle():
    return SmartDbCaller(calendar_db.collection_addSharing, 
    (FormField('token', str, False), 
    FormField('uuid', str, False),
    FormField('target', str, False),
    FormField('lastChange', str, False)),
    None)


@app.route('/collection/getShared', methods=['POST'])
def api_collection_getSharedHandle():
    return SmartDbCaller(calendar_db.collection_getShared, 
    (FormField('token', str, False), ),
    None)

# endregion

# region: Todo

@app.route('/todo/getFull', methods=['POST'])
def api_todo_getFullHandle():
    return SmartDbCaller(calendar_db.todo_getFull, 
    (FormField('token', str, False), ),
    None)

@app.route('/todo/getList', methods=['POST'])
def api_todo_getListHandle():
    return SmartDbCaller(calendar_db.todo_getList, 
    (FormField('token', str, False), ),
    None)

@app.route('/todo/getDetail', methods=['POST'])
def api_todo_getDetailHandle():
    return SmartDbCaller(calendar_db.todo_getDetail, 
    (FormField('token', str, False), 
    FormField('uuid', str, False)),
    None)

@app.route('/todo/add', methods=['POST'])
def api_todo_addHandle():
    return SmartDbCaller(calendar_db.todo_add, 
    (FormField('token', str, False), ),
    None)

@app.route('/todo/update', methods=['POST'])
def api_todo_updateHandle():
    return SmartDbCaller(calendar_db.todo_update, 
    (FormField('token', str, False), 
    FormField('uuid', str, False), 
    FormField('data', str, False), 
    FormField('lastChange', str, False)),
    None)

@app.route('/todo/delete', methods=['POST'])
def api_todo_deleteHandle():
    return SmartDbCaller(calendar_db.todo_delete, 
    (FormField('token', str, False), 
    FormField('uuid', str, False), 
    FormField('lastChange', str, False)),
    None)

# endregion

# region: Admin

@app.route('/admin/get', methods=['POST'])
def api_admin_getHandle():
    return SmartDbCaller(calendar_db.admin_get, 
    (FormField('token', str, False), ),
    None)

@app.route('/admin/add', methods=['POST'])
def api_admin_addHandle():
    return SmartDbCaller(calendar_db.admin_add, 
    (FormField('token', str, False), 
    FormField('username', str, False)),
    None)

@app.route('/admin/update', methods=['POST'])
def api_admin_updateHandle():
    return SmartDbCaller(calendar_db.admin_update, 
    (FormField('token', str, False), 
    FormField('username', str, False),
    FormField('password', str, True),
    FormField('isAdmin', utils.Str2Bool, True)),
    None)

@app.route('/admin/delete', methods=['POST'])
def api_admin_deleteHandle():
    return SmartDbCaller(calendar_db.admin_delete, 
    (FormField('token', str, False), 
    FormField('username', str, False)),
    None)

# endregion

# region: Profile

@app.route('/profile/isAdmin', methods=['POST'])
def api_profile_isAdminHandle():
    return SmartDbCaller(calendar_db.profile_isAdmin, 
    (FormField('token', str, False), ),
    None)

@app.route('/profile/changePassword', methods=['POST'])
def api_profile_changePasswordHandle():
    return SmartDbCaller(calendar_db.profile_changePassword, 
    (FormField('token', str, False),
    FormField('password', str, False)),
    None)

@app.route('/profile/getToken', methods=['POST'])
def api_profile_getTokenHandle():
    return SmartDbCaller(calendar_db.profile_getToken, 
    (FormField('token', str, False), ),
    None)

@app.route('/profile/deleteToken', methods=['POST'])
def api_profile_deleteTokenHandle():
    return SmartDbCaller(calendar_db.profile_deleteToken, 
    (FormField('token', str, False),
    FormField('deleteToken', str, False)),
    None)

# endregion

# endregion

# region: Misc Functions

@dataclass(frozen=True)
class FormField:
    name: str
    """The name of form field."""
    ty: Callable[[str], Any]
    """The type of form field."""
    is_optional: bool
    """True if this form field is optional, otherwise false."""

def SmartDbCaller(db_method: Callable, fields: tuple[FormField, ...], padding_form: dict[str, Any] | None) -> dict[str, Any]:
    result = ResponseBody(False, 'Invalid parameter', None)
    opt_param_counter = 0
    param_list: list[Any] = []
    opt_param_dict: dict[str, Any] = {}
    
    real_form = request.form.to_dict()
    LOGGER.debug(f'Form: {real_form}')
    if padding_form is not None:
        real_form.update(padding_form)
        
    for field in fields:
        value = real_form.get(field.name, None)
        if value is not None:
            value = field.ty(value)
        
        if field.is_optional:
            # optional param
            if value is not None:
                opt_param_dict[field.name] = value
            opt_param_counter += 1
        else:
            # required param
            if value is None:
                break
            param_list.append(value)
            
    # at least one opt param
    LOGGER.debug(f'All Optional Parameter: {opt_param_counter}')
    LOGGER.debug(f'Optional Parameter Count: {len(opt_param_dict)}')
    if opt_param_counter == 0 or len(opt_param_dict) != 0:
        result: ResponseBody = db_method(*param_list, **opt_param_dict)

    return ConstructResponseBody(result)

@dataclass(frozen=True)
class ResponseBody:
    success: bool
    """True if this operation is successful, otherwise false."""
    error: str
    """The error message provided when operation failed."""
    data: Any
    """The payload provided when operation successed."""

def ConstructResponseBody(body: ResponseBody) -> dict[str, Any]:
    return {
        'success': body.success,
        'error': body.error,
        'data': body.data
    }

def run():
    calendar_db.open()
    app.run(port=config.get_config().web.port)
    calendar_db.close()
    
# endregion