53 lines
1.3 KiB
Crystal
53 lines
1.3 KiB
Crystal
require "json"
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class Articles::Show < BrowserAction
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fallback do
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post_id = maybe_post_id(context.request)
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case post_id
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in Monads::Just
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response = client_class.post_data(post_id.value!)
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page = PageConverter.new.convert(response.data)
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html ShowPage, page: page
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in Monads::Nothing, Monads::Maybe
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html(
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Errors::ShowPage,
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message: "Error parsing the URL",
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status_code: 500,
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)
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end
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end
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def maybe_post_id(request : HTTP::Request)
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from_params = post_id_from_params(request.query_params)
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from_path = post_id_from_path(request.path)
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from_path.or(from_params)
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end
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def post_id_from_path(request_path : String)
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Monads::Try(Regex::MatchData)
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.new(->{ request_path.match(/([0-9a-f]+)$/i) })
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.to_maybe
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.fmap(->(matches : Regex::MatchData) { matches[1] })
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end
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def post_id_from_params(params : URI::Params)
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maybe_uri = Monads::Try(String)
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.new(->{ params["redirectUrl"] })
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.to_maybe
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.fmap(->(url : String) { URI.parse(url) })
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.bind(->(uri : URI) { post_id_from_path(uri.path) })
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end
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def client_class
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if use_local?
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LocalClient
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else
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MediumClient
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end
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end
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def use_local?
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ENV.fetch("USE_LOCAL", "false") == "true"
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end
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end
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