first commit
This commit is contained in:
commit
e72f762673
5 changed files with 578 additions and 0 deletions
10
README.md
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10
README.md
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# Endpoints
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```
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GET /autocomplete?term=slow+burn&type=freeform
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GET /search?query=enemies+to+lovers&fandom=...&tag=...&rating=...&min_words=...&max_words=...&page=1
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GET /tags/Slow%20Burn/works?page=1
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GET /works/12345
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```
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- ```PORT``` env var to change the port, defaults to ```8080```. The pattern syntax ```GET /works/{id}```
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406
ao3/ao3.go
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406
ao3/ao3.go
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@ -0,0 +1,406 @@
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package ao3
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"net/http/cookiejar"
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"net/url"
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"strconv"
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"strings"
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"time"
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"github.com/PuerkitoBio/goquery"
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"golang.org/x/time/rate"
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)
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const (
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baseURL = "https://archiveofourown.org"
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userAgent = "ao3tui/0.1 (personal project)"
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)
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type Client struct {
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http *http.Client
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limiter *rate.Limiter
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}
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func NewClient() *Client {
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jar, _ := cookiejar.New(nil)
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return &Client{
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http: &http.Client{
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Jar: jar,
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Timeout: 30 * time.Second,
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},
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/*
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- Rate limit!!!!!!!!!!!!!
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*/
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limiter: rate.NewLimiter(rate.Every(5*time.Second), 1),
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}
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}
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func (c *Client) get(ctx context.Context, path string, params url.Values) (*goquery.Document, error) {
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if err := c.limiter.Wait(ctx); err != nil {
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return nil, err
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}
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u := baseURL + path
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if len(params) > 0 {
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u += "?" + params.Encode()
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}
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, 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", userAgent)
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req.Header.Set("Accept", "text/html,application/xhtml+xml")
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resp, err := c.http.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 == 429 {
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return nil, fmt.Errorf("rate limited by AO3")
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}
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if resp.StatusCode != 200 {
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return nil, fmt.Errorf("unexpected status: %d", resp.StatusCode)
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}
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return goquery.NewDocumentFromReader(resp.Body)
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}
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func (c *Client) getJSON(ctx context.Context, path string, params url.Values, out any) error {
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if err := c.limiter.Wait(ctx); err != nil {
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return err
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}
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u := baseURL + path
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if len(params) > 0 {
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u += "?" + params.Encode()
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}
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, u, nil)
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if err != nil {
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return err
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}
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req.Header.Set("User-Agent", userAgent)
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req.Header.Set("Accept", "application/json")
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resp, err := c.http.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode != 200 {
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return fmt.Errorf("unexpected status: %d", resp.StatusCode)
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}
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return json.NewDecoder(resp.Body).Decode(out)
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}
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type TagSuggestion struct {
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Name string
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Count int // may be 0 if not returned
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}
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type Work struct {
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ID int
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Title string
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Author string
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Fandoms []string
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Tags []string
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Rating string
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Warnings []string
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Categories []string
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WordCount int
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ChaptersDone int
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ChaptersTotal int // -1 = unknown (?)
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Kudos int
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Hits int
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Summary string
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Updated string
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URL string
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}
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type SearchParams struct {
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Query string
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Fandom string
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Tag string
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Rating string // "General Audiences", "Teen And Up Audiences", "Mature", "Explicit", "Not Rated"
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MinWords int
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MaxWords int
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Page int
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}
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type SearchResult struct {
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Works []Work
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TotalWorks int
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Page int
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}
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// AutocompleteTags returns tag suggestions for a partial query.
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// tagType: "freeform", "fandom", "character", "relationship", "warning" — empty = all
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func (c *Client) AutocompleteTags(ctx context.Context, query string, tagType string) ([]TagSuggestion, error) {
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params := url.Values{
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"term": {query},
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}
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if tagType != "" {
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params.Set("type", tagType)
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}
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var raw []struct {
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ID int `json:"id"`
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Name string `json:"name"`
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Count int `json:"count"`
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}
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if err := c.getJSON(ctx, "/autocomplete/tag", params, &raw); err != nil {
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return nil, err
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}
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out := make([]TagSuggestion, len(raw))
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for i, r := range raw {
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out[i] = TagSuggestion{Name: r.Name, Count: r.Count}
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}
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return out, nil
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}
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func (c *Client) SearchWorks(ctx context.Context, p SearchParams) (SearchResult, error) {
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params := url.Values{}
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if p.Query != "" {
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params.Set("work_search[query]", p.Query)
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}
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if p.Fandom != "" {
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params.Set("work_search[fandom_names]", p.Fandom)
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}
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if p.Tag != "" {
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params.Set("work_search[other_tag_names]", p.Tag)
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}
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if p.Rating != "" {
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params.Set("work_search[rating_ids]", ratingID(p.Rating))
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}
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if p.MinWords > 0 {
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params.Set("work_search[words_from]", strconv.Itoa(p.MinWords))
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}
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if p.MaxWords > 0 {
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params.Set("work_search[words_to]", strconv.Itoa(p.MaxWords))
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}
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page := p.Page
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if page < 1 {
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page = 1
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}
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params.Set("page", strconv.Itoa(page))
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doc, err := c.get(ctx, "/works/search", params)
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if err != nil {
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return SearchResult{}, err
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}
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return parseWorkList(doc, page), nil
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}
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// Works by Tag
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func (c *Client) WorksByTag(ctx context.Context, tag string, page int) (SearchResult, error) {
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if page < 1 {
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page = 1
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}
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params := url.Values{"page": {strconv.Itoa(page)}}
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encodedTag := url.PathEscape(strings.ReplaceAll(tag, " ", "%20"))
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doc, err := c.get(ctx, "/tags/"+encodedTag+"/works", params)
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if err != nil {
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return SearchResult{}, err
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}
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return parseWorkList(doc, page), nil
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}
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// Work Detail
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func (c *Client) GetWork(ctx context.Context, id int) (Work, error) {
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params := url.Values{"view_adult": {"true"}}
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doc, err := c.get(ctx, fmt.Sprintf("/works/%d", id), params)
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if err != nil {
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return Work{}, err
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}
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return parseWorkDetail(doc, id), nil
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}
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// Parsers
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func parseWorkList(doc *goquery.Document, page int) SearchResult {
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var result SearchResult
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result.Page = page
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/*
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// total count — format is "223,747 Found"
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*/
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doc.Find("h3.heading").Each(func(_ int, s *goquery.Selection) {
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text := strings.TrimSpace(s.Text())
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if strings.Contains(text, "Found") {
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raw := strings.Split(text, " ")[0]
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raw = strings.ReplaceAll(raw, ",", "")
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result.TotalWorks, _ = strconv.Atoi(raw)
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}
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})
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doc.Find("li.work.blurb.group").Each(func(_ int, s *goquery.Selection) {
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w := parseWorkBlurb(s)
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result.Works = append(result.Works, w)
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})
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return result
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}
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func parseWorkBlurb(s *goquery.Selection) Work {
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var w Work
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// ID from href
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if href, exists := s.Find("h4.heading a").First().Attr("href"); exists {
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fmt.Sscanf(href, "/works/%d", &w.ID)
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w.URL = baseURL + href
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}
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w.Title = strings.TrimSpace(s.Find("h4.heading a").First().Text())
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// Authors (may be "Anonymous")
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s.Find("h4.heading a[rel='author']").Each(func(_ int, a *goquery.Selection) {
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w.Author = strings.TrimSpace(a.Text())
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})
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if w.Author == "" {
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w.Author = "Anonymous"
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}
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// Fandoms
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s.Find("h5.fandoms a.tag").Each(func(_ int, a *goquery.Selection) {
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w.Fandoms = append(w.Fandoms, strings.TrimSpace(a.Text()))
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})
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// Tags
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s.Find("ul.tags li.freeforms a.tag").Each(func(_ int, a *goquery.Selection) {
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w.Tags = append(w.Tags, strings.TrimSpace(a.Text()))
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})
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// Rating — class is like "rating-mature rating"
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s.Find("ul.required-tags span[class*='rating-']").Each(func(_ int, span *goquery.Selection) {
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if t := span.AttrOr("title", ""); t != "" {
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w.Rating = t
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}
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})
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// Categories — class is like "category-slash category"
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s.Find("ul.required-tags span[class*='category-']").Each(func(_ int, span *goquery.Selection) {
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if t := span.AttrOr("title", ""); t != "" {
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w.Categories = append(w.Categories, t)
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}
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})
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// Stats
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w.WordCount = parseStatInt(s, "dd.words")
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w.Kudos = parseStatInt(s, "dd.kudos")
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w.Hits = parseStatInt(s, "dd.hits")
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// Chapters
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chapText := strings.TrimSpace(s.Find("dd.chapters").Text())
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if chapText != "" {
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parts := strings.Split(chapText, "/")
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if len(parts) == 2 {
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fmt.Sscanf(parts[0], "%d", &w.ChaptersDone)
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if parts[1] == "?" {
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w.ChaptersTotal = -1
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} else {
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fmt.Sscanf(parts[1], "%d", &w.ChaptersTotal)
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}
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}
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}
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// Summary
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w.Summary = strings.TrimSpace(s.Find("blockquote.userstuff.summary").Text())
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// Updated date
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w.Updated = strings.TrimSpace(s.Find("p.datetime").Text())
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return w
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}
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func parseWorkDetail(doc *goquery.Document, id int) Work {
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var w Work
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w.ID = id
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w.URL = fmt.Sprintf("%s/works/%d", baseURL, id)
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w.Title = strings.TrimSpace(doc.Find("h2.title.heading").First().Text())
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doc.Find("h3.byline a[rel='author']").Each(func(_ int, a *goquery.Selection) {
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w.Author = strings.TrimSpace(a.Text())
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})
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if w.Author == "" {
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w.Author = "Anonymous"
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}
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doc.Find("dd.fandom a.tag").Each(func(_ int, a *goquery.Selection) {
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w.Fandoms = append(w.Fandoms, strings.TrimSpace(a.Text()))
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})
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doc.Find("dd.freeform a.tag").Each(func(_ int, a *goquery.Selection) {
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w.Tags = append(w.Tags, strings.TrimSpace(a.Text()))
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})
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w.Rating = strings.TrimSpace(doc.Find("dd.rating a.tag").Text())
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doc.Find("dd.warning a.tag").Each(func(_ int, a *goquery.Selection) {
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w.Warnings = append(w.Warnings, strings.TrimSpace(a.Text()))
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})
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doc.Find("dd.category a.tag").Each(func(_ int, a *goquery.Selection) {
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w.Categories = append(w.Categories, strings.TrimSpace(a.Text()))
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})
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w.WordCount = parseStatInt(doc.Selection, "dd.words")
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w.Kudos = parseStatInt(doc.Selection, "dd.kudos")
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w.Hits = parseStatInt(doc.Selection, "dd.hits")
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chapText := strings.TrimSpace(doc.Find("dd.chapters").Text())
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if chapText != "" {
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parts := strings.Split(chapText, "/")
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if len(parts) == 2 {
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fmt.Sscanf(parts[0], "%d", &w.ChaptersDone)
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if parts[1] == "?" {
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w.ChaptersTotal = -1
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} else {
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fmt.Sscanf(parts[1], "%d", &w.ChaptersTotal)
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}
|
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}
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}
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|
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w.Summary = strings.TrimSpace(doc.Find("div.summary blockquote.userstuff").Text())
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w.Updated = strings.TrimSpace(doc.Find("dd.status").Text())
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return w
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}
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|
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func parseStatInt(s *goquery.Selection, selector string) int {
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text := strings.ReplaceAll(strings.TrimSpace(s.Find(selector).Text()), ",", "")
|
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n, _ := strconv.Atoi(text)
|
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return n
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}
|
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|
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func ratingID(rating string) string {
|
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switch strings.ToLower(rating) {
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case "general audiences", "general", "g":
|
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return "10"
|
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case "teen and up audiences", "teen", "t":
|
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return "11"
|
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case "mature", "m":
|
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return "12"
|
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case "explicit", "e":
|
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return "13"
|
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default:
|
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return "9" // Not Rated
|
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}
|
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}
|
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13
go.mod
Normal file
13
go.mod
Normal file
|
|
@ -0,0 +1,13 @@
|
|||
module ao3scraper
|
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|
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go 1.21
|
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|
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require (
|
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github.com/PuerkitoBio/goquery v1.9.2
|
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golang.org/x/time v0.5.0
|
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)
|
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|
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require (
|
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github.com/andybalholm/cascadia v1.3.2 // indirect
|
||||
golang.org/x/net v0.24.0 // indirect
|
||||
)
|
||||
42
go.sum
Normal file
42
go.sum
Normal file
|
|
@ -0,0 +1,42 @@
|
|||
github.com/PuerkitoBio/goquery v1.9.2 h1:4/wZksC3KgkQw7SQgkKotmKljk0M6V8TUvA8Wb4yPeE=
|
||||
github.com/PuerkitoBio/goquery v1.9.2/go.mod h1:GHPCaP0ODyyxqcNoFGYlAprUFH81NuRPd0GX3Zu2Mvk=
|
||||
github.com/andybalholm/cascadia v1.3.2 h1:3Xi6Dw5lHF15JtdcmAHD3i1+T8plmv7BQ/nsViSLyss=
|
||||
github.com/andybalholm/cascadia v1.3.2/go.mod h1:7gtRlve5FxPPgIgX36uWBX58OdBsSS6lUvCFb+h7KvU=
|
||||
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
|
||||
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
||||
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
|
||||
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
|
||||
golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
|
||||
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
|
||||
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
|
||||
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
|
||||
golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
|
||||
golang.org/x/net v0.9.0/go.mod h1:d48xBJpPfHeWQsugry2m+kC02ZBRGRgulfHnEXEuWns=
|
||||
golang.org/x/net v0.24.0 h1:1PcaxkF854Fu3+lvBIx5SYn9wRlBzzcnHZSiaFFAb0w=
|
||||
golang.org/x/net v0.24.0/go.mod h1:2Q7sJY5mzlzWjKtYUEXSlBWCdyaioyXzRB2RtU8KVE8=
|
||||
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
||||
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
||||
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
||||
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
||||
golang.org/x/sys v0.7.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
||||
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
|
||||
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
|
||||
golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
|
||||
golang.org/x/term v0.7.0/go.mod h1:P32HKFT3hSsZrRxla30E9HqToFYAQPCMs/zFMBUFqPY=
|
||||
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
||||
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
|
||||
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
|
||||
golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
|
||||
golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
|
||||
golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
|
||||
golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
|
||||
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
|
||||
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
|
||||
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
|
||||
golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
|
||||
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
107
main.go
Normal file
107
main.go
Normal file
|
|
@ -0,0 +1,107 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"log"
|
||||
"net/http"
|
||||
"os"
|
||||
"strconv"
|
||||
|
||||
"ao3scraper/ao3"
|
||||
)
|
||||
|
||||
var client *ao3.Client
|
||||
|
||||
func main() {
|
||||
client = ao3.NewClient()
|
||||
|
||||
port := os.Getenv("PORT")
|
||||
if port == "" {
|
||||
port = "8080"
|
||||
}
|
||||
|
||||
mux := http.NewServeMux()
|
||||
mux.HandleFunc("GET /autocomplete", handleAutocomplete)
|
||||
mux.HandleFunc("GET /search", handleSearch)
|
||||
mux.HandleFunc("GET /tags/{tag}/works", handleTagWorks)
|
||||
mux.HandleFunc("GET /works/{id}", handleWork)
|
||||
|
||||
log.Printf("listening on :%s", port)
|
||||
log.Fatal(http.ListenAndServe(":"+port, mux))
|
||||
}
|
||||
|
||||
func handleAutocomplete(w http.ResponseWriter, r *http.Request) {
|
||||
term := r.URL.Query().Get("term")
|
||||
tagType := r.URL.Query().Get("type")
|
||||
if term == "" {
|
||||
jsonError(w, "term required", http.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
|
||||
tags, err := client.AutocompleteTags(r.Context(), term, tagType)
|
||||
if err != nil {
|
||||
jsonError(w, err.Error(), http.StatusInternalServerError)
|
||||
return
|
||||
}
|
||||
jsonOK(w, tags)
|
||||
}
|
||||
|
||||
func handleSearch(w http.ResponseWriter, r *http.Request) {
|
||||
q := r.URL.Query()
|
||||
page, _ := strconv.Atoi(q.Get("page"))
|
||||
minWords, _ := strconv.Atoi(q.Get("min_words"))
|
||||
maxWords, _ := strconv.Atoi(q.Get("max_words"))
|
||||
|
||||
result, err := client.SearchWorks(r.Context(), ao3.SearchParams{
|
||||
Query: q.Get("query"),
|
||||
Fandom: q.Get("fandom"),
|
||||
Tag: q.Get("tag"),
|
||||
Rating: q.Get("rating"),
|
||||
MinWords: minWords,
|
||||
MaxWords: maxWords,
|
||||
Page: page,
|
||||
})
|
||||
if err != nil {
|
||||
jsonError(w, err.Error(), http.StatusInternalServerError)
|
||||
return
|
||||
}
|
||||
jsonOK(w, result)
|
||||
}
|
||||
|
||||
func handleTagWorks(w http.ResponseWriter, r *http.Request) {
|
||||
tag := r.PathValue("tag")
|
||||
page, _ := strconv.Atoi(r.URL.Query().Get("page"))
|
||||
|
||||
result, err := client.WorksByTag(r.Context(), tag, page)
|
||||
if err != nil {
|
||||
jsonError(w, err.Error(), http.StatusInternalServerError)
|
||||
return
|
||||
}
|
||||
jsonOK(w, result)
|
||||
}
|
||||
|
||||
func handleWork(w http.ResponseWriter, r *http.Request) {
|
||||
id, err := strconv.Atoi(r.PathValue("id"))
|
||||
if err != nil {
|
||||
jsonError(w, "invalid id", http.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
|
||||
work, err := client.GetWork(r.Context(), id)
|
||||
if err != nil {
|
||||
jsonError(w, err.Error(), http.StatusInternalServerError)
|
||||
return
|
||||
}
|
||||
jsonOK(w, work)
|
||||
}
|
||||
|
||||
func jsonOK(w http.ResponseWriter, v any) {
|
||||
w.Header().Set("Content-Type", "application/json")
|
||||
json.NewEncoder(w).Encode(v)
|
||||
}
|
||||
|
||||
func jsonError(w http.ResponseWriter, msg string, code int) {
|
||||
w.Header().Set("Content-Type", "application/json")
|
||||
w.WriteHeader(code)
|
||||
json.NewEncoder(w).Encode(map[string]string{"error": msg})
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue