import csv
import os

def merge_prompt_with_colors(prompt_file, color_file, output_file, variation=1, color_level=1):
    # read prompt file
    with open(prompt_file, "r", encoding="utf-8") as f:
        reader = csv.DictReader(f)
        prompts = list(reader)

    # read color file
    with open(color_file, "r", encoding="utf-8") as f:
        reader = csv.DictReader(f)
        colors = list(reader)

    merged_rows = []
    id_counter = 1
    for prompt in prompts:
        prompt_text = prompt["prompt"]
        for color in colors:
            hex_val = color.get("hex") or color.get("color") or ""
            merged_rows.append({
                "id": id_counter,
                "prompt": prompt_text,
                "color_1": hex_val,
                "variation": variation,
                "color_level": color_level,
                "split": "test",
                "color_format": "Hex code",
            })
            id_counter += 1
    
    output_dir = os.path.dirname(output_file) 
    if output_dir and not os.path.exists(output_dir): 
        os.makedirs(output_dir, exist_ok=True)
    # write csv
    with open(output_file, "w", newline="", encoding="utf-8") as f:
        writer = csv.DictWriter(f, fieldnames=["id","prompt","color_1","variation","color_level","split","color_format"])
        writer.writeheader()
        writer.writerows(merged_rows)

    print(f"Generation complete: {output_file}")


merge_prompt_with_colors("raw_config/Variation_1.csv", "raw_config/Color_Level_1.csv", "metadata/Variation_1_Color_1.csv", variation=1, color_level=1)
merge_prompt_with_colors("raw_config/Variation_1.csv", "raw_config/Color_Level_2.csv", "metadata/Variation_1_Color_2.csv", variation=1, color_level=2)
merge_prompt_with_colors("raw_config/Variation_1.csv", "raw_config/Color_Level_3.csv", "metadata/Variation_1_Color_3.csv", variation=1, color_level=3)