from argparse import Namespace
import logging
import io
import requests

from esphome import core, automation
from esphome.components import display, font, time
import esphome.components.image as espImage
import esphome.config_validation as cv
import esphome.codegen as cg
from esphome.const import CONF_BLUE, CONF_GREEN, CONF_RED, CONF_RESIZE, CONF_FILE, CONF_ID, CONF_BRIGHTNESS, CONF_RAW_DATA_ID,  CONF_TIME, CONF_TRIGGER_ID
from esphome.core import CORE, HexInt
from esphome.cpp_generator import RawExpression

_LOGGER = logging.getLogger(__name__)

DEPENDENCIES = ["display", "light", "api"]
AUTO_LOAD = ["ehmtxv2"]
IMAGE_TYPE_RGB565 = 4
MAXFRAMES = 110
MAXICONS = 90
ICONWIDTH = 8
ICONHEIGHT = 8
ICONBUFFERSIZE = ICONWIDTH * ICONHEIGHT * 4
SVG_ICONSTART = '<svg width="80px" height="80px" viewBox="0 0 80 80">'
SVG_FULL_SCREEN_START = '<svg width="320px" height="80px" viewBox="0 0 320 80">'
SVG_END = "</svg>"

logging.warning(f"")
logging.warning(f"This is a beta version of https://github.com/lubeda/EspHoMaTriXv2")
logging.warning(f"")

def rgb565_svg(x,y,r,g,b):
    return f"<rect style=\"fill:rgb({(r << 3) | (r >> 2)},{(g << 2) | (g >> 4)},{(b << 3) | (b >> 2)});\" x=\"{x*10}\" y=\"{y*10}\" width=\"10\" height=\"10\"/>"

ehmtx_ns = cg.esphome_ns.namespace("esphome")
EHMTX_ = ehmtx_ns.class_("EHMTX", cg.Component)
Icons_ = ehmtx_ns.class_("EHMTX_Icon")

NextScreenTrigger = ehmtx_ns.class_(
    "EHMTXNextScreenTrigger", automation.Trigger.template(cg.std_string)
)

ExpiredScreenTrigger = ehmtx_ns.class_(
    "EHMTXExpiredScreenTrigger", automation.Trigger.template(cg.std_string)
)

NextClockTrigger = ehmtx_ns.class_(
    "EHMTXNextClockTrigger", automation.Trigger.template(cg.std_string)
)

CONF_EHMTX = "ehmtx"
CONF_URL = "url"
CONF_FLAG = "flag"
CONF_TIMECOMPONENT = "time_component"
CONF_LAMEID = "lameid"
CONF_LIFETIME = "lifetime"
CONF_ICONS = "icons"
CONF_SHOWDOW = "show_dow"
CONF_SHOWDATE = "show_date"
CONF_FRAMEDURATION = "frame_duration"
CONF_SCROLLCOUNT = "scroll_count"
CONF_MATRIXCOMPONENT = "matrix_component"
CONF_HTML = "icons2html"
CONF_SCROLLINTERVAL = "scroll_interval"
CONF_RAINBOWINTERVAL = "rainbow_interval"
CONF_FRAMEINTERVAL = "frame_interval"
CONF_DEFAULT_FONT_ID = "default_font_id"
CONF_DEFAULT_FONT = "default_font"
CONF_DEFAULT_FONT_XOFFSET = "default_font_xoffset"
CONF_DEFAULT_FONT_YOFFSET = "default_font_yoffset"
CONF_special_FONT_ID = "special_font_id"
CONF_special_FONT_XOFFSET = "special_font_xoffset"
CONF_special_FONT_YOFFSET = "special_font_yoffset"
CONF_PINGPONG = "pingpong"
CONF_TIME_FORMAT = "time_format"
CONF_DATE_FORMAT = "date_format"
CONF_ON_NEXT_SCREEN = "on_next_screen"
CONF_ON_NEXT_CLOCK = "on_next_clock"
CONF_ON_EXPIRED_SCREEN= "on_expired_screen"
CONF_SHOW_SECONDS = "show_seconds"
CONF_WEEK_START_MONDAY = "week_start_monday"
CONF_ICON = "icon_name"
CONF_TEXT = "text"


EHMTX_SCHEMA = cv.Schema({
    cv.Required(CONF_ID): cv.declare_id(EHMTX_),
    cv.Required(CONF_TIMECOMPONENT): cv.use_id(time),
    cv.Required(CONF_MATRIXCOMPONENT): cv.use_id(display),
    cv.Required(CONF_DEFAULT_FONT_ID): cv.use_id(font),
    cv.Required(CONF_special_FONT_ID): cv.use_id(font),
    cv.Optional(
        CONF_HTML, default=False
    ): cv.boolean,
    cv.Optional(
        CONF_SHOW_SECONDS, default=False
    ): cv.boolean,
    cv.Optional(
        CONF_SHOWDATE, default=True
    ): cv.boolean,
    cv.Optional(
        CONF_WEEK_START_MONDAY, default=True
    ): cv.boolean,
    cv.Optional(
        CONF_SHOWDOW, default=True
    ): cv.boolean,
    cv.Optional(
        CONF_SHOWDATE, default=True
    ): cv.boolean,
    cv.Optional(
        CONF_TIME_FORMAT, default="%H:%M"
    ): cv.string,
    cv.Optional(
        CONF_DATE_FORMAT, default="%d.%m."
    ): cv.string,
    cv.Optional(
        CONF_DEFAULT_FONT_XOFFSET, default="1"
    ): cv.templatable(cv.int_range(min=-32, max=32)),
    cv.Optional(
        CONF_DEFAULT_FONT_YOFFSET, default="6"
    ): cv.templatable(cv.int_range(min=-32, max=32)),
    cv.Optional(
        CONF_special_FONT_XOFFSET, default="1"
    ): cv.templatable(cv.int_range(min=-32, max=32)),
    cv.Optional(
        CONF_special_FONT_YOFFSET, default="6"
    ): cv.templatable(cv.int_range(min=-32, max=32)),
    cv.Optional(CONF_SCROLLINTERVAL, default="80"
                ): cv.templatable(cv.positive_int),
    cv.Optional(CONF_RAINBOWINTERVAL, default="32"
                ): cv.templatable(cv.positive_int),
    cv.Optional(CONF_SCROLLCOUNT, default="2"
                ): cv.templatable(cv.positive_int),
    cv.Optional(
        CONF_FRAMEINTERVAL, default="192"
    ): cv.templatable(cv.positive_int),
    cv.Optional(CONF_BRIGHTNESS, default=80): cv.templatable(cv.int_range(min=0, max=255)),
    cv.Optional(CONF_ON_NEXT_SCREEN): automation.validate_automation(
        {
            cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(NextScreenTrigger),
        }
    ),
    cv.Optional(CONF_ON_EXPIRED_SCREEN): automation.validate_automation(
        {
            cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(NextScreenTrigger),
        }
    ),
    cv.Optional(CONF_ON_NEXT_CLOCK): automation.validate_automation(
        {
            cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(NextClockTrigger),
        }
    ),
    cv.Optional(CONF_ON_EXPIRED_SCREEN): automation.validate_automation(
        {
            cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(ExpiredScreenTrigger),
        }
    ),
    cv.Required(CONF_ICONS): cv.All(
        cv.ensure_list(
            {
                cv.Required(CONF_ID): cv.declare_id(Icons_),

                cv.Exclusive(CONF_FILE,"uri"): cv.file_,
                cv.Exclusive(CONF_URL,"uri"): cv.url,
                cv.Exclusive(CONF_LAMEID,"uri"): cv.string,
                cv.Optional(CONF_RESIZE): cv.dimensions,
                cv.Optional(
                    CONF_FRAMEDURATION, default="0"
                ): cv.templatable(cv.positive_int),
                cv.Optional(
                    CONF_PINGPONG, default=False
                ): cv.boolean,
                cv.GenerateID(CONF_RAW_DATA_ID): cv.declare_id(cg.uint8),
            }
        ),
        cv.Length(max=MAXICONS),
    )})

CONFIG_SCHEMA = cv.All(font.validate_pillow_installed, EHMTX_SCHEMA)

SET_COLOR_ACTION_SCHEMA = cv.Schema(
    {
        cv.GenerateID(): cv.use_id(EHMTX_), 
        cv.Optional(CONF_RED,default="80"): cv.templatable(cv.uint8_t),
        cv.Optional(CONF_BLUE,default="80"): cv.templatable(cv.uint8_t),
        cv.Optional(CONF_GREEN,default="80"): cv.templatable(cv.uint8_t),
    }
)

SetTodayColorAction = ehmtx_ns.class_("SetTodayColor", automation.Action)

@automation.register_action(
    "ehmtx.today.color", SetTodayColorAction, SET_COLOR_ACTION_SCHEMA
)
async def ehmtx_set_today_color_action_to_code(config, action_id, template_arg, args):
    paren = await cg.get_variable(config[CONF_ID])

    var = cg.new_Pvariable(action_id, template_arg, paren)
    template_ = await cg.templatable(config[CONF_RED], args, cg.int_)
    cg.add(var.set_red(template_))
    template_ = await cg.templatable(config[CONF_GREEN], args, cg.int_)
    cg.add(var.set_green(template_))
    template_ = await cg.templatable(config[CONF_BLUE], args, cg.int_)
    cg.add(var.set_blue(template_))
    return var

SetWeekdayColorAction = ehmtx_ns.class_("SetWeekdayColor", automation.Action)

@automation.register_action(
    "ehmtx.weekday.color", SetWeekdayColorAction, SET_COLOR_ACTION_SCHEMA
)

async def ehmtx_set_week_color_action_to_code(config, action_id, template_arg, args):
    paren = await cg.get_variable(config[CONF_ID])

    var = cg.new_Pvariable(action_id, template_arg, paren)
    template_ = await cg.templatable(config[CONF_RED], args, cg.int_)
    cg.add(var.set_red(template_))
    template_ = await cg.templatable(config[CONF_GREEN], args, cg.int_)
    cg.add(var.set_green(template_))
    template_ = await cg.templatable(config[CONF_BLUE], args, cg.int_)
    cg.add(var.set_blue(template_))

    return var

CODEOWNERS = ["@lubeda"]

async def to_code(config):

    from PIL import Image, ImageSequence

    def openImageFile(path):
        try:
            return Image.open(path)
        except Exception as e:
            raise core.EsphomeError(f" ICONS: Could not load image file {path}: {e}")

    def thumbnails(frames):
        for frame in frames:
            thumbnail = frame.copy()
            thumbnail.thumbnail((32,8), Image.ANTIALIAS)
            yield thumbnail

    var = cg.new_Pvariable(config[CONF_ID])

    logging.info(f"Preparing icons, this may take some seconds.")

    html_string = F"<HTML><HEAD><TITLE>{CORE.config_path}</TITLE></HEAD>"
    html_string += '''\
    <STYLE>
    svg { padding-top: 2x; padding-right: 2px; padding-bottom: 2px; padding-left: 2px; }
    </STYLE><BODY>\
'''

    yaml_string= ""

    for conf in config[CONF_ICONS]:
                
        if CONF_FILE in conf:
            path = CORE.relative_config_path(conf[CONF_FILE])
            try:
                image = openImageFile(path)
            except Exception as e:
                raise core.EsphomeError(f" ICONS: Could not load image file {path}: {e}")
        elif CONF_LAMEID in conf:
            r = requests.get("https://developer.lametric.com/content/apps/icon_thumbs/" + conf[CONF_LAMEID], timeout=4.0)
            if r.status_code != requests.codes.ok:
                raise core.EsphomeError(f" ICONS: Could not download image file {conf[CONF_LAMEID]}: {conf[CONF_ID]}")
            image = Image.open(io.BytesIO(r.content))
        elif CONF_URL in conf:
            r = requests.get(conf[CONF_URL], timeout=4.0)
            if r.status_code != requests.codes.ok:
                raise core.EsphomeError(f" ICONS: Could not download image file {conf[CONF_URL]}: {conf[CONF_ID]}")
            image = Image.open(io.BytesIO(r.content))
        
        width, height = image.size

        if CONF_RESIZE in conf:
            new_width_max, new_height_max = conf[CONF_RESIZE]
            ratio = min(new_width_max / width, new_height_max / height)
            width, height = int(width * ratio), int(height * ratio)

        if hasattr(image, 'n_frames'):
            frames = min(image.n_frames, MAXFRAMES)
        else:
            frames = 1

        if ((width != 4*ICONWIDTH) or (width != ICONWIDTH)) and (height != ICONHEIGHT):
            logging.warning(f" icon wrong size valid 8x8 or 8x32: {conf[CONF_ID]} skipped!")
        else:
            if (conf[CONF_FRAMEDURATION] == 0):
                try:
                    duration =  image.info['duration']         
                except:
                    duration = config[CONF_FRAMEINTERVAL]
            else:
                duration = conf[CONF_FRAMEDURATION]

            html_string += F"<BR><B>{conf[CONF_ID]}</B>&nbsp;-&nbsp;({duration} ms):<BR>"
            yaml_string += F"\"{conf[CONF_ID]}\","
            pos = 0 
            frameIndex = 0
            html_string += f"<DIV ID={conf[CONF_ID]}>"
            data = [0 for _ in range(ICONBUFFERSIZE * 2 * frames)]
            for frameIndex in range(frames):
                
                image.seek(frameIndex)
                frame = image.convert("RGB")
                if CONF_RESIZE in conf:
                    frame = frame.resize([width, height])

                pixels = list(frame.getdata())

                
                # width, height = image.size
                if width == 8:  
                    html_string += SVG_ICONSTART
                else:
                    html_string += SVG_FULL_SCREEN_START
                i = 0
                for pix in pixels:
                    R = pix[0] >> 3
                    G = pix[1] >> 2
                    B = pix[2] >> 3
                    x = (i % width)
                    y = i//width
                    i +=1
                    rgb = (R << 11) | (G << 5) | B
                    html_string += rgb565_svg(x,y,R,G,B)
                    data[pos] = rgb >> 8
                    pos += 1
                    data[pos] = rgb & 255
                    pos += 1
                html_string += SVG_END
            html_string += f"</DIV>"
        
            rhs = [HexInt(x) for x in data]

            prog_arr = cg.progmem_array(conf[CONF_RAW_DATA_ID], rhs)

            cg.new_Pvariable(
                conf[CONF_ID],
                prog_arr,
                width,
                height,
                frames,
                espImage.IMAGE_TYPE["RGB565"],
                str(conf[CONF_ID]),
                conf[CONF_PINGPONG],
                duration,
            )

            cg.add(var.add_icon(RawExpression(str(conf[CONF_ID]))))

    html_string += "</BODY></HTML>"
    
    if config[CONF_HTML]:
        try:
            htmlfn = CORE.config_path.replace(".yaml","") + ".html"
            with open(htmlfn, 'w') as f:
                f.truncate()
                f.write(html_string)
                f.close()
                logging.info(f"EsphoMaTrix: wrote html-file with icon preview: {htmlfn}")

        except:
            logging.warning(f"EsphoMaTrix: Error writing HTML file: {htmlfn}")    
    
    logging.info("List of icons for e.g. blueprint:\n\n\r["+yaml_string+"]\n")
    
    disp = await cg.get_variable(config[CONF_MATRIXCOMPONENT])
    cg.add(var.set_display(disp))

    f = await cg.get_variable(config[CONF_DEFAULT_FONT_ID])
    cg.add(var.set_default_font(f))

    f = await cg.get_variable(config[CONF_special_FONT_ID])
    cg.add(var.set_special_font(f))

    ehmtxtime = await cg.get_variable(config[CONF_TIMECOMPONENT])
    cg.add(var.set_clock(ehmtxtime))

    cg.add(var.set_brightness(config[CONF_BRIGHTNESS]))
    cg.add(var.set_scroll_interval(config[CONF_SCROLLINTERVAL]))
    cg.add(var.set_rainbow_interval(config[CONF_SCROLLINTERVAL]))
    cg.add(var.set_scroll_count(config[CONF_SCROLLCOUNT]))
    cg.add(var.set_frame_interval(config[CONF_FRAMEINTERVAL]))
    cg.add(var.set_week_start(config[CONF_WEEK_START_MONDAY]))
    cg.add(var.set_time_format(config[CONF_TIME_FORMAT]))
    cg.add(var.set_date_format(config[CONF_DATE_FORMAT]))
    cg.add(var.set_show_day_of_week(config[CONF_SHOWDOW]))
    cg.add(var.set_show_date(config[CONF_SHOWDATE]))
    cg.add(var.set_show_seconds(config[CONF_SHOW_SECONDS]))
    cg.add(var.set_default_font_offset(config[CONF_DEFAULT_FONT_XOFFSET], config[CONF_DEFAULT_FONT_YOFFSET] ))
    cg.add(var.set_special_font_offset(config[CONF_special_FONT_XOFFSET], config[CONF_special_FONT_YOFFSET] ))
    for conf in config.get(CONF_ON_NEXT_SCREEN, []):
        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
        await automation.build_automation(trigger, [(cg.std_string, "x"), (cg.std_string, "y")], conf)

    for conf in config.get(CONF_ON_NEXT_CLOCK, []):
        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
        await automation.build_automation(trigger, [], conf)

    for conf in config.get(CONF_ON_EXPIRED_SCREEN, []):
        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
        await automation.build_automation(trigger, [(cg.std_string, "x"), (cg.std_string, "y")] , conf)

    await cg.register_component(var, config)