wehub-resource-sync
75 lines
1.9 KiB
Go
75 lines
1.9 KiB
Go
// catalog.go provides a client for the Radio Browser API (radio-browser.info),
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// a free community-maintained directory of internet radio stations.
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package radio
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"net/url"
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"time"
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)
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const radioBrowserBase = "https://de1.api.radio-browser.info/json"
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// CatalogStation represents a station from the Radio Browser API.
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type CatalogStation struct {
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Name string `json:"name"`
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URL string `json:"url_resolved"`
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Country string `json:"country"`
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Tags string `json:"tags"`
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Codec string `json:"codec"`
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Bitrate int `json:"bitrate"`
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Votes int `json:"votes"`
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Homepage string `json:"homepage"`
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}
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var catalogClient = &http.Client{Timeout: 10 * time.Second}
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// SearchStations searches the Radio Browser API by station name.
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func SearchStations(query string, limit int) ([]CatalogStation, error) {
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if limit <= 0 {
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limit = 50
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}
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u := fmt.Sprintf("%s/stations/byname/%s?limit=%d&order=votes&reverse=true&hidebroken=true",
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radioBrowserBase, url.PathEscape(query), limit)
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return fetchStations(u)
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}
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// TopStationsOffset returns a page of the most-voted stations starting at offset.
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func TopStationsOffset(offset, limit int) ([]CatalogStation, error) {
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if limit <= 0 {
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limit = 50
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}
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if offset < 0 {
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offset = 0
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}
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u := fmt.Sprintf("%s/stations/topvote/%d?offset=%d&hidebroken=true",
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radioBrowserBase, limit, offset)
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return fetchStations(u)
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}
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func fetchStations(u string) ([]CatalogStation, error) {
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req, err := http.NewRequest("GET", u, nil)
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if err != nil {
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return nil, err
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}
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req.Header.Set("User-Agent", "cliamp/1.0")
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resp, err := catalogClient.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return nil, fmt.Errorf("radio-browser: HTTP %d", resp.StatusCode)
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}
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var stations []CatalogStation
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if err := json.NewDecoder(resp.Body).Decode(&stations); err != nil {
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return nil, err
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}
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return stations, nil
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}
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