app.py

import os, sys, json, re, time, base64, random, shutil
import gradio as gr
import numpy as np
import requests
from requests import Session
from requests.adapters import HTTPAdapter
from requests.packages.urllib3.util.retry import Retry
from datetime import datetime
import urllib.parse
from groq import Groq
from exif import Image
from PIL import Image as PILImage, ExifTags as PILExifTags
from io import BytesIO
import colorsys

# MARK: INIT
# MAX_SEED = np.iinfo(np.int32).max
MAX_SEED = 9999
MAX_IMAGE_SIZE = 2048

GROQ_APIKEY_PROMPTENHANCE = os.getenv("GROQ_APIKEY_PROMPTENHANCE")
API_V1 = os.getenv("API_V1")
API_V1_MODELS = urllib.parse.unquote(API_V1 + "/models")
API_V1_IMAGE = urllib.parse.unquote(API_V1 + "/imagine")
API_OLD = urllib.parse.unquote(os.getenv("API_OLD"))

# print(API_V1_MODELS)
# print(API_V1_IMAGE)

CACHE_DIR = os.path.join(os.path.dirname(__file__), "cache")
IMAGE_DIR = os.path.join(CACHE_DIR, "images")
if not os.path.exists(CACHE_DIR):
    os.makedirs(CACHE_DIR)
    print(f"Created cache dir on path {CACHE_DIR}")
    os.makedirs(IMAGE_DIR)
    print(f"Created images dir on path {IMAGE_DIR}")

RES = os.path.join(os.path.dirname(__file__), "_res")

gr.set_static_paths(paths=["_res/assets/", "_res/assets/emojis/", "_res/assets/favicons/"])

custom_css = RES + "/_custom.css"
custom_js = RES + "/_custom.js"

custom_head = f"""
        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.9.0/css/all.min.css"/>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.9.0/js/all.min.js"></script>
        <link rel="apple-touch-icon" sizes="180x180" href="file=_res/assets/favicons/apple-touch-icon.png">
        <link rel="icon" type="image/png" sizes="32x32" href="file=_res/assets/favicons/favicon-32x32.png">
        <link rel="icon" type="image/png" sizes="16x16" href="file=_res/assets/favicons/favicon-16x16.png">
        <link rel="icon" type="image/x-icon" href="file=_res/assets/favicons/favicon.ico">
        <link rel="manifest" href="file=_res/assets/favicons/site.webmanifest">
"""

theme = gr.themes.Soft(
    # primary_hue="orange",
    radius_size="sm",
    neutral_hue=gr.themes.Color(c100="#a6adc8", c200="#9399b2", c300="#7f849c", c400="#6c7086", c50="#cdd6f4", c500="#585b70", c600="#45475a", c700="#313244", c800="#1e1e2e", c900="#181825", c950="#11111b"),
)

title = "Bilder Builder"


# MARK: GET PREV. IMAGES
def get_gallery_images(dirpath):
    gallery_images = [dirpath + "/" + s for s in os.listdir(dirpath) if os.path.isfile(os.path.join(dirpath, s))]
    gallery_images.sort(key=lambda s: os.path.getmtime(s), reverse=True)
    return gallery_images


# MARK: READ EXIF
def read_exif(image_path):
    with open(image_path, "rb") as src:
        img = Image(src)
        img_comment = json.loads(img.user_comment)

        # checking if the key exists before removing
        if "concept" in img_comment:
            img_comment.pop("concept")

        return img_comment


def read_image_exfi_data(image_path):
    print("Imagepath:", image_path)
    img_exif_make, img_exif_comment = read_exif(image_path)
    return None, image_path, img_exif_comment


# MARK: GROQ PROMPT ENHANCE
def groq_enhance_process(Prompt=""):
    client = Groq(api_key=GROQ_APIKEY_PROMPTENHANCE)
    Prompt = "random prompt" if Prompt == "" else Prompt
    SYSTEMPROMPT = os.path.join(RES, "groq_systemmessage_prompt_enhance.json")
    with open(SYSTEMPROMPT, "r") as f:
        SYSTEMPROMPT = json.load(f)

    completion = client.chat.completions.create(
        model="llama-3.1-70b-versatile",
        messages=[SYSTEMPROMPT, {"role": "user", "content": Prompt}],
        temperature=0.8,
        max_tokens=512,
        top_p=0.9,
        stream=False,
        seed=random.randint(0, MAX_SEED),
        stop=None,
    )

    if completion.choices[0].message.content != "":
        enhanced_prompt = completion.choices[0].message.content
        enhanced_prompt = re.sub(r"[\.\"]+", "", enhanced_prompt)

    return enhanced_prompt


def image_get_size(image_path):
    img = PILImage.open(image_path)
    print("Image size:", img.size)
    width, height = img.size
    return width, height


# MARK: DOMINANT COLOR
def image_get_dominant_color(image_path):
    img = PILImage.open(image_path)
    img = img.convert("RGB")
    img = img.resize((100, 100), resample=0)
    pixels = list(img.getdata())

    # Erzeuge eine Liste mit den Häufigkeiten der Farben
    colors = []
    for pixel in pixels:
        r, g, b = pixel
        h, s, v = colorsys.rgb_to_hsv(r / 255, g / 255, b / 255)
        if v > 0.5:  # Filteriere hellere Farben aus
            continue
        if v > 0.99:  # Filteriere Weiß aus
            continue
        colors.append((h, s, v))

    # Ermittle die dominante Farbe
    dominant_color = max(colors, key=lambda x: x[2])
    dominant_color_rgb = colorsys.hsv_to_rgb(dominant_color[0], dominant_color[1], dominant_color[2])
    dominant_color_rgb = [int(c * 255) for c in dominant_color_rgb]
    dominant_color_rgb = f"rgb({dominant_color_rgb[0]}, {dominant_color_rgb[1]}, {dominant_color_rgb[2]})"
    print(dominant_color_rgb)

    return dominant_color_rgb


# MARK: CLEAR COMPONENTS
def clear_components():
    return None


def process(Prompt, used_model, image_width, image_height, image_ratio, image_seed, randomize_seed):
    if Prompt == "":
        gr.Info("Kein Prompt angegeben, es wird ein zufälliger Prompt generiert.", duration=12)
        Prompt = groq_enhance_process("random prompt")

    image_ratio = "9:16" if image_ratio == "" else image_ratio
    used_seed = random.randint(0, MAX_SEED) if image_seed == 0 or randomize_seed else image_seed
    # used_model = "turbo" if int(image_width) > 1024 or int(image_height) > 1024 else "flux"  # turbo, flux

    timestamp = datetime.now().strftime("%Y-%m-%d-%H-%M-%S")
    filename_prompt = re.sub(r"[^\w\s-]", "", Prompt).strip().replace(" ", "_")
    filename = timestamp + "_" + filename_prompt[:100] + ".png"
    file_path = os.path.join(IMAGE_DIR, filename)

    # Retry-Logik mit requests und Retry
    session = Session()
    retries = Retry(total=3, status_forcelist=[429, 500, 502, 503, 504], backoff_factor=0.3, respect_retry_after_header=True)  # Max 3 Versuche  # Codes, die wiederholt werden  # Exponential Backoff  # Retry-Header beachten
    adapter = HTTPAdapter(max_retries=retries)
    session.mount("https://", adapter)
    session.mount("http://", adapter)

    API_OLD_REQUEST_URL = f"{API_OLD}{urllib.parse.quote(Prompt)}?model=flux&width={image_width}&height={image_height}&nologo=true&enhance=false&nofeed=true&seed={used_seed}"
    API_V1_REQUEST_URL = f"{API_V1_IMAGE}?prompt={urllib.parse.quote(Prompt)}&size={urllib.parse.quote(image_ratio)}&seed={used_seed}&model={used_model.lower()}"
    REQUEST_URL = API_V1_REQUEST_URL if used_model.lower() != "flux-api-old" else API_OLD_REQUEST_URL
    print(REQUEST_URL)
    try:
        response = session.get(REQUEST_URL, timeout=60)
        if response.status_code == 200:
            print("Imagine API Request solved")
            print("Save image to: " + file_path)
            img = PILImage.open(BytesIO(response.content))
            img.save(file_path, "PNG")

            # img_exif_comment = "" # read_exif(file_path)
            img_dominant_color = image_get_dominant_color(file_path)
            img_width, img_height = image_get_size(file_path)

            return ({"value": Prompt, "__type__": "update"}, {"value": file_path, "__type__": "update"}, {"value": None, "visible": False, "__type__": "update"}, {"visible": True, "__type__": "update"}, {"value": Prompt, "visible": True, "__type__": "update"}, img_width, img_height, used_seed, {"value": file_path, "visible": True, "__type__": "update"}, img_dominant_color, used_seed)
        else:
            print("Imagine API Request ERROR")
            raise gr.Error("Imagine API-Aufruf fehlgeschlagen 💥!", duration=15)
    except requests.exceptions.Timeout:
        raise gr.Error("⏰ Zeitüberschreitung beim API-Aufruf", duration=15)
    except requests.exceptions.RequestException as e:
        print(f"Unbekannter Fehler beim API-Aufruf: {e}")
        raise gr.Error("Unbekannter Fehler beim API-Aufruf! 🤷‍♂️", duration=15)


# MARK: Gradio BLOCKS UI
with gr.Blocks(theme=theme, head=custom_head, css=custom_css, js=custom_js, title=title) as demo:
    with gr.Row(elem_classes="row-header"):
        gr.Markdown(f"""
                <h1>{title}</h1>
                <p><span style="font-weight: 600">LG Sebastian</span> <i class="winking-hand-emoji"></i>  gib dem Space gerne ein <i class="heart-beat-emoji"></i></p>""",
                    
    with gr.Tab("Bilder Builder"):
        with gr.Row():
            with gr.Column(scale=2):  # min_width=420,
                with gr.Row():
                    placeholder_text = "[???] Generiert dir einen zufälligen Prompt.\n[STERN] optimiert deinen eignen Prompt.\n[RUN] generiert dein Bild."
                    text_prompt = gr.Textbox(label="Prompt", show_label=False, lines=12, max_lines=18, placeholder=placeholder_text, elem_id="prompt_input", elem_classes="prompt-input hide-progress", autofocus=True)
                with gr.Row():
                    random_prompt_button = gr.Button("", variant="secondary", elem_id="random_prompt_btn", elem_classes="random-prompt-btn", icon="_res/assets/star_light_48.png")
                    enhance_prompt_button = gr.Button("", variant="secondary", elem_id="enhance_prompt_btn", elem_classes="enhance-prompt-btn", icon="_res/assets/star_light_48.png")
                    run_button = gr.Button("Erstellen", variant="primary", elem_id="run_btn", elem_classes="run-btn")
                with gr.Row(elem_classes="image_size_selctor_wrapper"):
                    with gr.Column(scale=1):
                        with gr.Row():
                            inference_models = ["FLUX-API-OLD"] # ["FLUX", "FLUX-Realism", "FLUX-Pixel", "FLUX-Anime", "FLUX-3D", "FLUX-Disney", "ANY-DARK", "Stable-Diffusion-XL-Base", "Stable-Diffusion-XL-Lightning"]
                            select_model = gr.Dropdown(choices=inference_models, value="FLUX-API-OLD", label="Model", elem_id="select_model", elem_classes="select-model")
                            # with gr.Row():
                            image_width = gr.Number(label="Breite", minimum=256, maximum=MAX_IMAGE_SIZE, value=576, step=32, elem_id="image_width_selector", elem_classes="image-width-selector", scale=1, visible=False)
                            image_height = gr.Number(label="Höhe", minimum=256, maximum=MAX_IMAGE_SIZE, value=1024, step=32, elem_id="image_height_selector", elem_classes="image-height-selector", scale=1, visible=False)
                        with gr.Row():
                            image_ratio_buttons = gr.Radio(["9:16", "3:4", "2:3", "1:1"], value="9:16", label="Hochformat", show_label=True, info="Die gängigsten Seitenverhältnissen.", interactive=True, elem_id="image_ratio_buttons", elem_classes="image-ratio-buttons", container=True, scale=2)
                            switch_width_height = gr.Button("", size="sm", elem_id="switch_width_height", elem_classes="switch-ratio-btn", variant="primary", scale=1)
                        with gr.Column():
                            randomize_seed = gr.Checkbox(label="Randomize seed", value=True, elem_classes="random-seed-cb")
                            image_seed = gr.Slider(label="Seed", info="Jeder Seed generiert ein anderes Bild mit dem selben Prompt", minimum=0, step=1, value=42, maximum=MAX_SEED, elem_id="image_seed", elem_classes="image-seed hide-progress", interactive=False)

            with gr.Column(scale=4):  # min_width=600,
                with gr.Row():
                    with gr.Column(scale=1):
                        with gr.Row():
                            output_image = gr.Image(show_label=False, min_width=320, scale=3, elem_id="output_image", elem_classes="output-image", type="filepath", format="webp")
                            # gallery = gr.Gallery(label="Bisher erstellte Bilder", show_label=True, value=get_gallery_images(IMAGE_DIR), elem_id="gallery", columns=[4], object_fit="cover", height="auto", interactive=False, format="webp")
                            with gr.Column(scale=1, visible=False, elem_classes="image-info-wrapper") as image_info_wrapper:
                                with gr.Group():
                                    image_informations = gr.Markdown("""## Bildinformationen""", visible=True)
                                with gr.Row(elem_classes="img-size-wrapper"):
                                    image_info_tb_width = gr.Textbox(label="Breite", lines=1, max_lines=1, interactive=False, show_copy_button=True, elem_classes="image-info-tb-width")
                                    image_info_tb_height = gr.Textbox(label="Höhe", lines=1, max_lines=1, interactive=False, show_copy_button=True, elem_classes="image-info-tb-height")
                                with gr.Row(elem_classes="img-seed-wrapper"):
                                    image_info_tb_seed = gr.Textbox(label="Seed", lines=1, max_lines=1, interactive=False, show_copy_button=True, elem_classes="image-info-tb-seed")
                                    image_info_tb_prompt = gr.Textbox("Bild Prompt", lines=4, max_lines=8, interactive=False, elem_classes="hide-progress", show_copy_button=True, visible=False)
                                image_download_button = gr.DownloadButton("Bild herunterladen", value=None, elem_classes="download-button", variant="primary", visible=False)

                output_url = gr.Textbox(label="Output URL", show_label=True, interactive=False, visible=False)
                outpu_image_comment = gr.Json(visible=False)
                output_dominant_image_color = gr.Textbox(show_label=False, elem_id="dominant_image_color", visible=True, elem_classes="output-dominant-image-color")

        def switch_image_size_values(image_width, image_height):
            return image_height, image_width

        def switch_image_ratio_buttons(ratio_value):
            ratio_value = ratio_value.split(":")
            ratio_value_new = f"{int(ratio_value[1])}:{int(ratio_value[0])}"

            if int(ratio_value[1]) > int(ratio_value[0]):
                # Querformat
                new_choises = ["16:9", "4:3", "3:2", "1:1"]
                new_label = "Querformat"
            elif int(ratio_value[1]) < int(ratio_value[0]):
                # Hochformat
                new_choises = ["9:16", "3:4", "2:3", "1:1"]
                new_label = "Hochformat"
            elif int(ratio_value[1]) == int(ratio_value[0]):
                new_choises = image_ratio_buttons.choices
                new_label = "Quadratisch"

            return {"choices": new_choises, "value": ratio_value_new, "label": new_label, "__type__": "update"}

        def calculate_ratio_values(image_ratio_buttons):
            ratio_value = image_ratio_buttons.split(":")
            if int(ratio_value[0]) > int(ratio_value[1]):
                a = 1024
                b = int(a * int(ratio_value[1]) / int(ratio_value[0]))
                new_width = a
                new_height = b
                new_label = "Querformat"
            elif int(ratio_value[0]) < int(ratio_value[1]):
                b = 1024
                a = int(b * int(ratio_value[0]) / int(ratio_value[1]))
                new_width = a
                new_height = b
                new_label = "Hochformat"
            elif int(ratio_value[0]) == int(ratio_value[1]):
                new_width = 1024
                new_height = 1024
                new_label = "Quadratisch"

            return {"label": new_label, "__type__": "update"}, new_width, new_height

        switch_width_height.click(fn=switch_image_size_values, inputs=[image_width, image_height], outputs=[image_width, image_height], show_progress="hidden", show_api=False)
        switch_width_height.click(fn=switch_image_ratio_buttons, inputs=[image_ratio_buttons], outputs=[image_ratio_buttons], show_progress="hidden", show_api=False)

        image_ratio_buttons.input(fn=calculate_ratio_values, inputs=[image_ratio_buttons], outputs=[image_ratio_buttons, image_width, image_height], show_progress="hidden", show_api=False)

        run_button.click(fn=lambda: ({"interactive": False, "__type__": "update"}, {"interactive": False, "__type__": "update"}, {"interactive": False, "__type__": "update"}), outputs=[run_button, enhance_prompt_button, random_prompt_button], show_api=False).then(fn=clear_components, outputs=[output_image], show_api=False).then(
            fn=process, inputs=[text_prompt, select_model, image_width, image_height, image_ratio_buttons, image_seed, randomize_seed], outputs=[text_prompt, output_image, output_url, image_informations, image_info_tb_prompt, image_info_tb_width, image_info_tb_height, image_info_tb_seed, image_download_button, output_dominant_image_color, image_seed]
        ).then(fn=lambda: ({"interactive": True, "__type__": "update"}, {"interactive": True, "__type__": "update"}, {"interactive": True, "__type__": "update"}), outputs=[run_button, enhance_prompt_button, random_prompt_button], show_api=False)

        randomize_seed.input(lambda x: {"interactive": False if x == True else True, "__type__": "update"}, inputs=[randomize_seed], outputs=[image_seed], show_api=False)

        enhance_prompt_button.click(fn=groq_enhance_process, inputs=[text_prompt], outputs=[text_prompt], show_api=False)
        random_prompt_button.click(fn=groq_enhance_process, inputs=None, outputs=[text_prompt], show_api=False)

# MARK: Gradio LAUNCH
demo.launch(show_api=True)