Files
elm-0.19-workshop/part9/ElmHub.elm
2016-04-03 06:37:08 -07:00

145 lines
3.3 KiB
Elm

module ElmHub (..) where
import Html exposing (..)
import Html.Attributes exposing (..)
import Html.Events exposing (..)
import Http
import Auth
import Task exposing (Task)
import Effects exposing (Effects)
import Json.Decode exposing (Decoder, (:=))
import Json.Encode
import Signal exposing (Address)
import Dict exposing (Dict)
searchFeed : String -> Task x Action
searchFeed query =
let
-- See https://developer.github.com/v3/search/#example for how to customize!
url =
"https://api.github.com/search/repositories?access_token="
++ Auth.token
++ "&q="
++ query
++ "+language:elm&sort=stars&order=desc"
task =
Http.get responseDecoder url
|> Task.map SetResults
in
Task.onError task (\_ -> Task.succeed (SetResults []))
responseDecoder : Decoder (List SearchResult)
responseDecoder =
"items" := Json.Decode.list searchResultDecoder
searchResultDecoder : Decoder SearchResult
searchResultDecoder =
Json.Decode.object3
SearchResult
("id" := Json.Decode.int)
("full_name" := Json.Decode.string)
("stargazers_count" := Json.Decode.int)
type alias Model =
{ query : String
, results : Dict ResultId SearchResult
}
type alias SearchResult =
{ id : ResultId
, name : String
, stars : Int
}
type alias ResultId =
Int
initialModel : Model
initialModel =
{ query = "tutorial"
, results = Dict.empty
}
view : Address Action -> Model -> Html
view address model =
div
[ class "content" ]
[ header
[]
[ h1 [] [ text "ElmHub" ]
, span [ class "tagline" ] [ text "Like GitHub, but for Elm things." ]
]
, input [ class "search-query", onInput address SetQuery, defaultValue model.query ] []
, button [ class "search-button", onClick address Search ] [ text "Search" ]
, ul
[ class "results" ]
(viewSearchResults address model.results)
]
viewSearchResults : Address Action -> Dict ResultId SearchResult -> List Html
viewSearchResults address results =
-- TODO sort by star count and render
[]
onInput address wrap =
on "input" targetValue (\val -> Signal.message address (wrap val))
defaultValue str =
property "defaultValue" (Json.Encode.string str)
viewSearchResult : Address Action -> SearchResult -> Html
viewSearchResult address result =
li
[]
[ span [ class "star-count" ] [ text (toString result.stars) ]
, a
[ href ("https://github.com/" ++ result.name), target "_blank" ]
[ text result.name ]
, button
[ class "hide-result", onClick address (DeleteById result.id) ]
[ text "X" ]
]
type Action
= Search
| SetQuery String
| DeleteById ResultId
| SetResults (List SearchResult)
update : Action -> Model -> ( Model, Effects Action )
update action model =
case action of
Search ->
( model, Effects.task (searchFeed model.query) )
SetQuery query ->
( { model | query = query }, Effects.none )
SetResults results ->
let
resultsById : Dict ResultId SearchResult
resultsById =
-- TODO convert results list into a Dict
Dict.empty
in
( { model | results = resultsById }, Effects.none )
DeleteById id ->
-- TODO delete the result with the given id
( model, Effects.none )