from browser import window

__pragma__ ('noanno')
__pragma__ ('js', """
var fs = require('fs');
var conversion_csv = fs.readFileSync('build/conversions.csv', 'utf8');
""", None)
# above is magically read (browserify plugin) at compile time
# browserify is run from root, so we need build/ in path for this to work

# convert to useful structure
structure_conversions = None

def build_structure_conversions():
    global structure_conversions
    structure_conversions = []
    
    structure_conversions_raw = [line.split("|") for line in conversion_csv.split("\n")]
    for line in structure_conversions_raw:
        if min(len(line[0]), len(line[1])) == 0:
            continue
        
        # header
        if line[1] == "struktura":
            continue
        
        vto_name = line[2].strip()
        vto_id = line[4].strip()
        
        if 0 in (len(vto_name), len(vto_id)):
            continue
        
        vfrom = "^" + line[0].replace("?", "\?").replace("%s", "([a-zA-Z螚ȎŠ-]+)") + "$"
        structure_conversions.append((__new__(RegExp(vfrom, 'u')), vto_name, vto_id))
        
        
def convert_structure(structure, type):
    if structure_conversions is None:
        build_structure_conversions()
    
    for vfrom, vto_name, vto_id in structure_conversions:
        match = structure.match(vfrom)
        # fix for ids 65, 66, 67 which instead matched with 64
        if match and vto_id == '64' and '-s' in type:
            vto_name = 's0-vp-s0'
            vto_id = '65'
        elif match and vto_id == '64' and '-g' in type:
            vto_name = 'gg-vp-gg'
            vto_id = '66'
        elif match and vto_id == '64' and '-r' in type:
            vto_name = 'r-vp-r'
            vto_id = '67'

        if match:
            # we need to remove replace alias here as we want to use javascript's one
            __pragma__('noalias', 'replace')
            result = structure.replace(vfrom, vto_name).strip()
            __pragma__('alias', 'replace', "py_replace")

            return result, vto_id
    
    window.console.log("Unknown structure: ", structure)
    return 'N/A', '/'