from util import hook, http, text, web
import json
import re

ITEM_URL = "http://www.newegg.com/Product/Product.aspx?Item={}"

API_PRODUCT = "http://www.ows.newegg.com/Products.egg/{}/ProductDetails"
API_SEARCH = "http://www.ows.newegg.com/Search.egg/Advanced"

NEWEGG_RE = (r"(?:(?:www.newegg.com|newegg.com)/Product/Product\.aspx\?Item=)([-_a-zA-Z0-9]+)", re.I)


def format_item(item):
    """ takes a newegg API item object and returns a description """
    title = text.truncate_str(item["Title"], 50)

    # format the rating nicely if it exists
    if not item["ReviewSummary"]["TotalReviews"] == "[]":
        rating = "Rated {}/5 ({} ratings)".format(item["ReviewSummary"]["Rating"],
                                                          item["ReviewSummary"]["TotalReviews"][1:-1])
    else:
        rating = "No Ratings"

    if not item["FinalPrice"] ==  item["OriginalPrice"]:
        price = "{FinalPrice}, was {OriginalPrice}".format(**item)
    else:
        price = item["FinalPrice"]

    tags = []

    if item["Instock"]:
        tags.append("\x02Stock Available\x02")
    else:
        tags.append("\x02Out Of Stock\x02")

    if item["FreeShippingFlag"]:
        tags.append("\x02Free Shipping\x02")

    if item["IsFeaturedItem"]:
        tags.append("\x02Featured\x02")

    if item["IsShellShockerItem"]:
        tags.append("\x02SHELL SHOCKER®\x02")

    # join all the tags together in a comma seperated string ("tag1, tag2, tag3")
    tag_text = u", ".join(tags)

    # create the item URL and shorten it
    url = web.try_isgd(ITEM_URL.format(item["NeweggItemNumber"]))

    return u"\x02{}\x02 ({}) - {} - {} - {}".format(title, price, rating,
                                                   tag_text, url)


@hook.regex(*NEWEGG_RE)
def newegg_url(match):
    item_id = match.group(1)
    item = http.get_json(API_PRODUCT.format(item_id))
    return format_item(item)


@hook.command
def newegg(inp):
    """newegg <item name> -- Searches newegg.com for <item name>"""

    # form the search request
    request = {
        "PageNumber": 1,
        "BrandId": -1,
        "NValue": "",
        "StoreDepaId": -1,
        "NodeId": -1,
        "Keyword": inp,
        "IsSubCategorySearch": False,
        "SubCategoryId": -1,
        "Sort": "FEATURED",
        "CategoryId": -1,
        "IsUPCCodeSearch": False
    }

    # submit the search request
    r = http.get_json(
      'http://www.ows.newegg.com/Search.egg/Advanced', 
      post_data = json.dumps(request)
    )

    # get the first result
    if r["ProductListItems"]:
        item = r["ProductListItems"][0]
        return format_item(item)
    else:
        return "No results found."