"""
Inkycal Calendar Module
Copyright by aceinnolab
"""

# pylint: disable=logging-fstring-interpolation

import calendar as cal

from inkycal.custom import *
from inkycal.modules.template import inkycal_module

logger = logging.getLogger(__name__)

class TaskEntry:
    """Class representing a task entry."""

    def __init__(self, title, project=None, parent_project=None, subtasks=None):
        self.title = title
        self.project = project
        self.consumed_time = 0  # in minutes
        self.subtasks = []
    def add_subtask(self, subtask):
        """Add a subtask to the task entry."""
        self.subtasks.append(subtask)
    def mock_task_list():
        """Generate a mock task list for testing purposes."""
        finetune = TaskEntry("3 new models finetune work", project="AISentry")
        generate_data = TaskEntry("Generate training data", project="AISentry")
        function_development = TaskEntry("Function development", project="AISentry")
        finetune.add_subtask(generate_data)
        finetune.add_subtask(function_development)

        check_llama = TaskEntry("Check Llama model performance", project="llama.cpp")
        transform = TaskEntry("Transformers library exploration", project="llama.cpp")
        check_llama.add_subtask(transform)

        research_work = TaskEntry("Research new AI techniques", project="AISentry")
        meeting = TaskEntry("Team meeting", project="General")
        return [finetune, check_llama, research_work, meeting]

def get_ip_address():
    """Get public IP address from external service."""
    try:
        # 方法1: 使用 ipify.org
        response = requests.get('https://api.ipify.org?format=json', timeout=5)
        return response.json()['ip']
    except Exception:
        try:
            # 方法2: 使用 icanhazip.com (备用)
            response = requests.get('https://icanhazip.com', timeout=5)
            return response.text.strip()
        except Exception:
            try:
                # 方法3: 使用 ifconfig.me (备用)
                response = requests.get('https://ifconfig.me/ip', timeout=5)
                return response.text.strip()
            except Exception:
                return "N/A"

class Today(inkycal_module):
    """today class
    Show today's date and events from given iCalendars
    """

    name = "Today - Show today's date and events from iCalendars"

    optional = {
        "date_format": {
            "label": "Use an arrow-supported token for custom date formatting "
                     + "see https://arrow.readthedocs.io/en/stable/#supported-tokens, e.g. D MMM",
            "default": "D MMM",
        },
        "time_format": {
            "label": "Use an arrow-supported token for custom time formatting "
                     + "see https://arrow.readthedocs.io/en/stable/#supported-tokens, e.g. HH:mm",
            "default": "HH:mm",
        },
        "webdav_hostname": {
            "label": "WebDAV Hostname (e.g. https://webdav.server.com)",
            "default": "",
        },
        "webdav_login": {
            "label": "WebDAV Login Username",
            "default": "",
        },
        "webdav_password": {
            "label": "WebDAV Login Password",
            "default": "",
        },
        "webdav_file_path": {
            "label": "WebDAV File Path to Super Productivity JSON file",
            "default": "",
        },
    }

    def __init__(self, config):
        """Initialize inkycal_calendar module"""

        super().__init__(config)
        config = config['config']

        self.ical = None
        self.month_events = None
        self._upcoming_events = None
        self._days_with_events = None

        # optional parameters
        self.week_start = config['week_starts_on']
        self.show_events = config['show_events']
        self.date_format = config["date_format"]
        self.time_format = config['time_format']
        self.language = config['language']

        # webdav configuration
        self.webdav_options = {
            'webdav_hostname': config.get('webdav_hostname', ''),
            'webdav_login': config.get('webdav_login', ''),
            'webdav_password': config.get('webdav_password', ''),
            'webdav_file_path': config.get('webdav_file_path', ''),
        }

        # additional configuration
        self.timezone = get_system_tz()
        
        # 选择字体：优先使用支持中文的 NotoSansCJK，否则使用 NotoSans
        self._font_family = self._select_font_family()

        # give an OK message
        logger.debug(f'{__name__} loaded')
    
    def _select_font_family(self) -> str:
        preferred_fonts = [
            'NotoSansCJKsc-Regular',
            'NotoSans-SemiCondensed'
        ]
        
        for font_name in preferred_fonts:
            if font_name in fonts:
                logger.debug(f'Selected font: {font_name}')
                return font_name
        
        return list(fonts.keys())[0]
    
    def _get_font(self, size: int) -> ImageFont.FreeTypeFont:
        return ImageFont.truetype(fonts[self._font_family], size=size)

    @staticmethod
    def flatten(values):
        """Flatten the values."""
        return [x for y in values for x in y]

    def generate_image(self):
        """Generate the image for today's date and events. """

        # ****************************************************************************************************************
        # Create base image

        # Define new image size with respect to padding
        im_width = self.width - 2 * self.padding_left
        im_height = self.height - 2 * self.padding_top
        im_size = (im_width, im_height)

        event_height = 0

        logger.debug(f'Generating Today module image of size {im_size}')

        # Create an iamge for black and colour Inky displays
        im_black = Image.new('RGB', im_size, color='white')
        im_colour = Image.new('RGB', im_size, color='white')

        # Split the image into two sections: date section and events section
        left_section_width = int(im_width * 0.2)
        right_section_width = im_width - left_section_width

        # 5% bottom space will be reserved for show the day progress bar
        left_section = (0, 0, left_section_width, im_height - int(im_height * 0.05))
        right_section = (left_section_width, 0, im_width, im_height - int(im_height * 0.05))

        section_height = left_section[3]


        # ****************************************************************************************************************
        # Edit left section - show today's date
        now = arrow.now(tz=self.timezone)
        month_height = int(im_height * 0.15)
        month_font = self._get_font(int(self.fontsize * 1.5))
        write(
            im_black,
            (0, 0),
            (left_section_width, month_height),
            now.format('MMMM', locale=self.language),
            font=month_font,
            autofit=False
        )

        date_height = int(im_height * 0.5)
        date_y = month_height
        large_font = self._get_font(int(self.fontsize * 4))
        date_time = arrow.now()
        day = date_time.day
        print(str(day))
        write(
            im_colour,
            (0, date_y),
            (left_section_width, date_height),
            str(day),
            font=large_font,
            autofit=False
        )

        weekday_y = month_height + date_height
        weekday_height = int(im_height * 0.15)
        weekday_font = self._get_font(int(self.fontsize * 2))
        write(
            im_black,
            (0, weekday_y),
            (left_section_width, weekday_height),
            now.format('dddd', locale=self.language),
            font=weekday_font,
            autofit=False
        )

        # show IP address at the bottom left
        ip_y = weekday_y + weekday_height
        ip_height = im_height - ip_y - 5
        ip_address = get_ip_address()
        write(
            im_black,
            (0, ip_y),
            (left_section_width, ip_height),
            ip_address,
            font=self.font,
            alignment='center',
            autofit=True
        )

        # ****************************************************************************************************************
        # Draw a dash line to separate left and right sections
        for _y in range(0, section_height, 8):

            ImageDraw.Draw(im_black).line(
                [(left_section_width, _y), (left_section_width, _y + 4)],
                fill='black',
                width=2,
            )

        # ****************************************************************************************************************
        # Edit right section - show today's events
        if self.show_events:
            # 导入日历解析器
            upcoming_events = True
            
            # 计算右侧可用空间
            right_x = left_section_width + 5  # 留5px边距
            right_usable_width = right_section_width - 10  # 左右各留5px
            
            # 计算行高
            line_spacing = 2
            text_bbox = self.font.getbbox("hg")
            line_height = text_bbox[3] + line_spacing
            max_lines = im_height // line_height

            from inkycal.modules.super_productivity_utils import get_today_tasks

            import requests
            url = self.webdav_options['webdav_hostname'] + self.webdav_options['webdav_file_path']
            response = requests.get(url, auth=(
                self.webdav_options['webdav_login'],
                self.webdav_options['webdav_password']
            ))
            content = response.content
            content = content[8:]
            with open('/workspaces/Inkycal/inkycal/modules/super_productivity.json', 'wb') as f:
                f.write(content)

            json_file_path = '/workspaces/Inkycal/inkycal/modules/super_productivity.json'
            task_list = get_today_tasks(json_file_path)
            
            if upcoming_events:
                # Split to 2 parts
                # Left part: title
                # Right part: Project name
                current_line = 0
                for idx, event in enumerate(task_list):
                    if current_line >= max_lines:
                        break  # 超出显示范围，停止绘制
                    
                    # 写任务标题
                    write(
                        im_black,
                        (right_x, current_line * line_height),
                        (int(right_usable_width * 0.7), line_height),
                        event.title,
                        font=self.font,
                        alignment='left'
                    )
                    
                    # 写项目名称
                    project_name = event.project_name if event.project_name else "Inbox"
                    
                    write(
                        im_colour,
                        (right_x + int(right_usable_width * 0.7), current_line * line_height),
                        (int(right_usable_width * 0.3), line_height),
                        project_name,
                        font=self.font,
                        alignment='right'
                    )
                    current_line += 1
                    if event.subtasks:
                        for sub_idx, subtask in enumerate(event.subtasks):
                            if subtask.is_done:
                                continue
                            if current_line + sub_idx + 1 >= max_lines:
                                break  # 超出显示范围，停止绘制
                            # 写子任务标题，缩进显示
                            write(
                                im_black,
                                (right_x + 10, current_line  * line_height),
                                (int(right_usable_width * 0.7) - 10, line_height),
                                f"- {subtask.title}",
                                font=self.font,
                                alignment='left'
                            )
                            current_line += 1  # 更新主循环的索引
                pass
            else:
                # 没有事件时显示提示
                write(
                    im_colour,
                    (right_x, int(im_height / 2)),
                    (right_usable_width, line_height),
                    "No events today",
                    font=self.font,
                    alignment='center'
                )
        
        # ****************************************************************************************************************
        # Draw progress bar at the bottom (24 segments for 24 hours)
        progress_bar_height = int(im_height * 0.05)
        progress_bar_y = im_height - progress_bar_height
        
        # 计算当前小时进度
        current_hour = now.hour
        current_minute = now.minute
        current_progress = current_hour + (current_minute / 60.0)  # 0-24 的浮点数
        
        # 绘制24个格子
        num_segments = 24
        segment_spacing = 2  # 格子之间的间距
        total_spacing = segment_spacing * (num_segments - 1)
        segment_width = (im_width - total_spacing) / num_segments
        
        draw = ImageDraw.Draw(im_black)
        
        for i in range(num_segments):
            # 计算每个格子的位置
            x_start = int(i * (segment_width + segment_spacing))
            x_end = int(x_start + segment_width)
            
            # 判断该格子是否已完成
            if i < current_progress:
                # 已完成的格子填充黑色（在 im_colour 上会显示为红色）
                draw.rectangle(
                    [(x_start, progress_bar_y), (x_end, im_height)],
                    fill='black',
                    outline='black'
                )
            else:
                # 未完成的格子只画边框（在 im_black 上画）
                ImageDraw.Draw(im_black).rectangle(
                    [(x_start, progress_bar_y), (x_end, im_height)],
                    fill='white',
                    outline='black',
                    width=1
                )
        
        return im_black, im_colour