import yaml
from weasyprint import HTML, CSS
import jinja2
from pathlib import Path
import networkx as nx
import matplotlib.pyplot as plt


def graph(roles):
    g = nx.Graph()
    g.add_nodes_from([str(role["num"]) for role in roles])
    for role in roles:
        for lien in role["liens"]:
            g.add_edge(str(role["num"]), str(list(lien.keys())[0]))
    return g


def topo_logo(topo, roles):
    plt.figure(figsize=(2, 2))
    ax = plt.gca()
    # ax.set_title(f"Forme du réseau: {topo}")
    g = graph(roles)
    nx.draw(g, node_color="white", node_size=100, ax=ax)
    _ = ax.axis("off")
    plt.margins(0.2)
    plt.subplots_adjust(left=0, right=1, top=1, bottom=0)
    plt.savefig(
        f"{topo}/logo.png",
        transparent=True,
    )
    plt.cla()

    plt.figure(figsize=(4, 4))
    ax = plt.gca()
    # ax.set_title(f"Forme du réseau: {topo}")
    g = graph(roles)
    nx.draw(
        g,
        with_labels=True,
        font_color="#fff",
        font_size=20,
        font_weight="bold",
        node_color="#333",
        node_size=1000,
        ax=ax,
    )
    _ = ax.axis("off")
    plt.margins(0.2)
    plt.subplots_adjust(left=0, right=1, top=1, bottom=0)
    plt.savefig(
        f"{topo}/shape.png",
        transparent=True,
    )
    plt.cla()


def topo_card(topo="", description="", scenarios=[], template="", css=[], **kwrds):
    card = template.render(topo=topo, description=description, scenarios=scenarios)
    dest = f"{topo}/topo.html"
    with open(dest, "w") as f:
        f.write(card)
    HTML(dest).write_pdf(dest.replace("html", "pdf"), stylesheets=css)


def role_card(role, topo, template, css=[], **kwrds):
    card = template.render(topo=topo, **role)
    dest = f"{topo}/role{role['num']}.html"
    with open(dest, "w") as f:
        f.write(card)
    HTML(dest).write_pdf(dest.replace("html", "pdf"), stylesheets=css)


with open("config.yml", "r") as f:
    config = yaml.load(f, Loader=yaml.SafeLoader)

css = [CSS(config["css"])]
templates = {}
for name, template_file in config["templates"].items():
    with open(template_file, "r") as f:
        templates[name] = jinja2.Template(f.read(), undefined=jinja2.StrictUndefined)


for topo, desc in config["levels"].items():

    Path(topo).mkdir(exist_ok=True)
    topo_logo(topo, desc["roles"])
    topo_card(**desc, topo=topo, template=templates["topo"], css=css)

    for role in desc["roles"]:
        role_card(role=role, topo=topo, template=templates["roles"], css=css)