Add method chaining for getting posts from subreddits

Signed-off-by: Vartan Benohanian <vartanbeno@gmail.com>
This commit is contained in:
Vartan Benohanian 2020-05-16 22:34:01 -04:00
parent eda947f6b5
commit 01fad4ece5
2 changed files with 102 additions and 86 deletions

View File

@ -36,9 +36,7 @@ func (s *SearchServiceOp) Posts(query string) *PostSearchBuilder {
b.client = s.client
b.opts.Query = query
b.opts.Type = "link"
b.opts.Sort = SortRelevance.String()
b.opts.Timespan = TimespanAll.String()
return b
return b.Sort(SortRelevance).Timespan(TimespanAll)
}
// Subreddits searches for subreddits.
@ -95,14 +93,18 @@ func (b *PostSearchBuilder) Limit(limit int) *PostSearchBuilder {
return b
}
// InSubreddits restricts the search to happen in the specified subreddits only.
// If none are set, the search is run against r/all.
func (b *PostSearchBuilder) InSubreddits(subreddits ...string) *PostSearchBuilder {
// FromSubreddits restricts the search to happen in the specified subreddits only.
func (b *PostSearchBuilder) FromSubreddits(subreddits ...string) *PostSearchBuilder {
b.subreddits = subreddits
b.opts.RestrictSubreddits = len(subreddits) > 0
return b
}
// FromAll runs the search against r/all.
func (b *PostSearchBuilder) FromAll() *PostSearchBuilder {
return b.FromSubreddits()
}
// Sort sets the sort option.
func (b *PostSearchBuilder) Sort(sort Sort) *PostSearchBuilder {
b.opts.Sort = sort.String()

View File

@ -12,6 +12,8 @@ import (
// SubredditService handles communication with the subreddit
// related methods of the Reddit API
type SubredditService interface {
GetPosts() *PostFinder
GetByName(ctx context.Context, subreddit string) (*Subreddit, *Response, error)
GetPopular(ctx context.Context, opts *ListOptions) (*Subreddits, *Response, error)
@ -24,13 +26,6 @@ type SubredditService interface {
GetMineWhereModerator(ctx context.Context, opts *ListOptions) (*Subreddits, *Response, error)
GetMineWhereStreams(ctx context.Context, opts *ListOptions) (*Subreddits, *Response, error)
GetHotLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error)
GetBestLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error)
GetNewLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error)
GetRisingLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error)
GetControversialLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error)
GetTopLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error)
GetSticky1(ctx context.Context, subreddit string) (*LinkAndComments, *Response, error)
GetSticky2(ctx context.Context, subreddit string) (*LinkAndComments, *Response, error)
@ -65,6 +60,16 @@ type SubredditShort struct {
ActiveUsers int `json:"active_user_count"`
}
// GetPosts returns posts.
// By default, it'll look for the hottest posts from r/all.
// Note: when looking for hot posts in a subreddit, it will include the
// sticked posts (if any) PLUS posts from the limit parameter (25 by default).
func (s *SubredditServiceOp) GetPosts() *PostFinder {
f := new(PostFinder)
f.client = s.client
return f.Sort(SortHot).FromAll()
}
// GetByName gets a subreddit by name
func (s *SubredditServiceOp) GetByName(ctx context.Context, subreddit string) (*Subreddit, *Response, error) {
if subreddit == "" {
@ -126,46 +131,6 @@ func (s *SubredditServiceOp) GetMineWhereStreams(ctx context.Context, opts *List
return s.getSubreddits(ctx, "subreddits/mine/contributor", opts)
}
// GetHotLinks returns the hot links
// If no subreddit are provided, then it runs the search against all those the client is subscribed to
// IMPORTANT: for subreddits, this will include the stickied posts (if any)
// PLUS the number of posts from the limit parameter (which is 25 by default)
func (s *SubredditServiceOp) GetHotLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error) {
return s.getLinks(ctx, SortHot, opts, subreddits...)
}
// GetBestLinks returns the best links
// If no subreddit are provided, then it runs the search against all those the client is subscribed to
// IMPORTANT: for subreddits, this will include the stickied posts (if any)
// PLUS the number of posts from the limit parameter (which is 25 by default)
func (s *SubredditServiceOp) GetBestLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error) {
return s.getLinks(ctx, SortBest, opts, subreddits...)
}
// GetNewLinks returns the new links
// If no subreddit are provided, then it runs the search against all those the client is subscribed to
func (s *SubredditServiceOp) GetNewLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error) {
return s.getLinks(ctx, SortNew, opts, subreddits...)
}
// GetRisingLinks returns the rising links
// If no subreddit are provided, then it runs the search against all those the client is subscribed to
func (s *SubredditServiceOp) GetRisingLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error) {
return s.getLinks(ctx, SortRising, opts, subreddits...)
}
// GetControversialLinks returns the controversial links
// If no subreddit are provided, then it runs the search against all those the client is subscribed to
func (s *SubredditServiceOp) GetControversialLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error) {
return s.getLinks(ctx, SortControversial, opts, subreddits...)
}
// GetTopLinks returns the top links
// If no subreddit are provided, then it runs the search against all those the client is subscribed to
func (s *SubredditServiceOp) GetTopLinks(ctx context.Context, opts *ListOptions, subreddits ...string) (*Links, *Response, error) {
return s.getLinks(ctx, SortTop, opts, subreddits...)
}
// GetSticky1 returns the first stickied post on a subreddit (if it exists)
func (s *SubredditServiceOp) GetSticky1(ctx context.Context, name string) (*LinkAndComments, *Response, error) {
return s.getSticky(ctx, name, sticky1)
@ -292,39 +257,6 @@ func (s *SubredditServiceOp) getSubreddits(ctx context.Context, path string, opt
return l, resp, nil
}
func (s *SubredditServiceOp) getLinks(ctx context.Context, sort Sort, opts *ListOptions, subreddits ...string) (*Links, *Response, error) {
path := sorts[sort]
if len(subreddits) > 0 {
path = fmt.Sprintf("r/%s/%s", strings.Join(subreddits, "+"), sort)
}
path, err := addOptions(path, opts)
if err != nil {
return nil, nil, err
}
req, err := s.client.NewRequest(http.MethodGet, path, nil)
if err != nil {
return nil, nil, err
}
root := new(rootListing)
resp, err := s.client.Do(ctx, req, root)
if err != nil {
return nil, resp, err
}
l := new(Links)
if root.Data != nil {
l.Links = root.Data.Things.Links
l.After = root.Data.After
l.Before = root.Data.Before
}
return l, resp, nil
}
// getSticky returns one of the 2 stickied posts of the subreddit (if they exist)
// Num should be equal to 1 or 2, depending on which one you want
// If it's <= 1, it's 1
@ -353,3 +285,85 @@ func (s *SubredditServiceOp) getSticky(ctx context.Context, subreddit string, nu
return root, resp, nil
}
// PostFinder finds posts from the specified subreddits.
// If no subreddits are specified, it finds posts from the ones the client is subscribed to.
type PostFinder struct {
client *Client
subreddits []string
sort string
opts struct {
After string `url:"after,omitempty"`
Before string `url:"before,omitempty"`
Limit int `url:"limit,omitempty"`
Timespan string `url:"t,omitempty"`
}
}
// After sets the after option.
func (f *PostFinder) After(after string) *PostFinder {
f.opts.After = after
return f
}
// Before sets the before option.
func (f *PostFinder) Before(before string) *PostFinder {
f.opts.Before = before
return f
}
// Limit sets the limit option.
func (f *PostFinder) Limit(limit int) *PostFinder {
f.opts.Limit = limit
return f
}
// FromSubreddits restricts the search to the subreddits.
func (f *PostFinder) FromSubreddits(subreddits ...string) *PostFinder {
f.subreddits = subreddits
return f
}
// FromAll allows the finder to find posts from r/all.
func (f *PostFinder) FromAll() *PostFinder {
f.subreddits = []string{"all"}
return f
}
// Sort sets the sort option.
func (f *PostFinder) Sort(sort Sort) *PostFinder {
f.sort = sort.String()
return f
}
// Timespan sets the timespan option.
func (f *PostFinder) Timespan(timespan Timespan) *PostFinder {
f.opts.Timespan = timespan.String()
return f
}
// Do conducts the search.
func (f *PostFinder) Do(ctx context.Context) (*Links, *Response, error) {
path := f.sort
if len(f.subreddits) > 0 {
path = fmt.Sprintf("r/%s/%s", strings.Join(f.subreddits, "+"), f.sort)
}
path, err := addOptions(path, f.opts)
if err != nil {
return nil, nil, err
}
req, err := f.client.NewRequest(http.MethodGet, path, nil)
if err != nil {
return nil, nil, err
}
root := new(rootListing)
resp, err := f.client.Do(ctx, req, root)
if err != nil {
return nil, resp, err
}
return root.getLinks(), resp, nil
}