#! /usr/bin/env python3

import argparse
import cairo

from xmet.spc import SPCOutlookParser, SPCOutlook, SPCOutlookMap

ASSETS = {
    'light': {
        'map':  'doc/conus.svg',
        'logo': 'doc/logo-paths.svg'
    },

    'dark': {
        'map':  'doc/conus-dark.svg',
        'logo': 'doc/logo-paths-dark.svg'
    }
}

def render_categorical(conus: SPCOutlookMap,
                       outlook: SPCOutlook,
                       args):
    assets = ASSETS['dark'] if args.dark else ASSETS['light']

    with cairo.SVGSurface(args.categorical, conus.width, conus.height) as surface:
        cr = cairo.Context(surface)

        conus.draw_base_map_from_file(cr, assets['map'])
        conus.draw_categories(cr, outlook)
        conus.draw_logo(cr, assets['logo'])

        if args.dark:
            cr.set_source_rgb(1, 1, 1)

        conus.draw_annotation(cr, f"Day {outlook.day} Categorical Severe Weather Outlook")

def render_probabilistic(conus: SPCOutlookMap,
                         outlook: SPCOutlook,
                         hazard: str,
                         path: str,
                         args):
    assets = ASSETS['dark'] if args.dark else ASSETS['light']

    with cairo.SVGSurface(path, conus.width, conus.height) as surface:
        cr = cairo.Context(surface)

        conus.draw_base_map_from_file(cr, assets['map'])
        conus.draw_probabilities(cr, outlook, hazard.upper())
        conus.draw_logo(cr, assets['logo'])

        if args.dark:
            cr.set_source_rgb(1, 1, 1)

        conus.draw_annotation(cr, f"Day {outlook.day} Probabilistic {hazard.lower().capitalize()} Risk")

argparser = argparse.ArgumentParser(description='Render graphical SPC outlooks from text file')
argparser.add_argument('--dark', action='store_true', help='Output dark mode graphics')
argparser.add_argument('--categorical', type=str, help='Output categorical risk graphic file')
argparser.add_argument('--tornado',     type=str, help='Output probabilistic hail risk graphic file')
argparser.add_argument('--hail',        type=str, help='Output probabilistic hail risk graphic file')
argparser.add_argument('--wind',        type=str, help='Output probabilistic wind risk graphic file')
argparser.add_argument('outlook',       type=str, help='SPC text product file')

args = argparser.parse_args()

parser = SPCOutlookParser()
conus  = SPCOutlookMap()

with open(args.outlook, 'r') as fh:
    outlook = parser.parse(fh.read())

if args.categorical is not None:
    render_categorical(conus, outlook, args)

if args.tornado is not None:
    render_probabilistic(conus, outlook, 'tornado', args.tornado, args)

if args.hail is not None:
    render_probabilistic(conus, outlook, 'hail', args.hail, args)

if args.wind is not None:
    render_probabilistic(conus, outlook, 'wind', args.wind, args)