Simple blogging system written in Go https://goblog.app
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

143 lines
4.5 KiB

package main
import (
"database/sql"
"encoding/json"
"log"
"net/http"
)
func (a *goBlog) initBlogStats() {
f := func(p *post) {
a.db.resetBlogStats(p.Blog)
}
a.pPostHooks = append(a.pPostHooks, f)
a.pUpdateHooks = append(a.pUpdateHooks, f)
a.pDeleteHooks = append(a.pDeleteHooks, f)
}
func (a *goBlog) serveBlogStats(w http.ResponseWriter, r *http.Request) {
blog := r.Context().Value(blogContextKey).(string)
bc := a.cfg.Blogs[blog]
canonical := bc.getRelativePath(bc.BlogStats.Path)
a.render(w, r, templateBlogStats, &renderData{
BlogString: blog,
Canonical: a.getFullAddress(canonical),
Data: map[string]interface{}{
"TableUrl": canonical + ".table.html",
},
})
}
func (a *goBlog) serveBlogStatsTable(w http.ResponseWriter, r *http.Request) {
blog := r.Context().Value(blogContextKey).(string)
data, err, _ := a.blogStatsCacheGroup.Do(blog, func() (interface{}, error) {
return a.db.getBlogStats(blog)
})
if err != nil {
a.serveError(w, r, err.Error(), http.StatusInternalServerError)
return
}
// Render
a.render(w, r, templateBlogStatsTable, &renderData{
BlogString: blog,
Data: data,
})
}
func (db *database) getBlogStats(blog string) (data map[string]interface{}, err error) {
if stats := db.loadBlogStatsCache(blog); stats != nil {
return stats, nil
}
// Build query
prq := &postsRequestConfig{
blog: blog,
status: statusPublished,
}
query, params := buildPostsQuery(prq)
query = "select path, mdtext(content) as content, published, substr(published, 1, 4) as year, substr(published, 6, 2) as month from (" + query + ")"
postCount := "coalesce(count(distinct path), 0) as postcount"
charCount := "coalesce(sum(coalesce(charcount(distinct content), 0)), 0)"
wordCount := "coalesce(sum(wordcount(distinct content)), 0) as wordcount"
wordsPerPost := "coalesce(round(wordcount/postcount,0), 0)"
type statsTableType struct {
Name, Posts, Chars, Words, WordsPerPost string
}
// Count total posts
row, err := db.queryRow("select *, "+wordsPerPost+" from (select "+postCount+", "+charCount+", "+wordCount+" from ("+query+"))", params...)
if err != nil {
return nil, err
}
total := statsTableType{}
if err = row.Scan(&total.Posts, &total.Chars, &total.Words, &total.WordsPerPost); err != nil {
return nil, err
}
// Count posts per year
rows, err := db.query("select *, "+wordsPerPost+" from (select year, "+postCount+", "+charCount+", "+wordCount+" from ("+query+") where published != '' group by year order by year desc)", params...)
if err != nil {
return nil, err
}
var years []statsTableType
year := statsTableType{}
for rows.Next() {
if err = rows.Scan(&year.Name, &year.Posts, &year.Chars, &year.Words, &year.WordsPerPost); err == nil {
years = append(years, year)
} else {
return nil, err
}
}
// Count posts without date
row, err = db.queryRow("select *, "+wordsPerPost+" from (select "+postCount+", "+charCount+", "+wordCount+" from ("+query+") where published = '')", params...)
if err != nil {
return nil, err
}
noDate := statsTableType{}
if err = row.Scan(&noDate.Posts, &noDate.Chars, &noDate.Words, &noDate.WordsPerPost); err != nil {
return nil, err
}
// Count posts per month per year
months := map[string][]statsTableType{}
month := statsTableType{}
for _, year := range years {
rows, err = db.query("select *, "+wordsPerPost+" from (select month, "+postCount+", "+charCount+", "+wordCount+" from ("+query+") where published != '' and year = @year group by month order by month desc)", append(params, sql.Named("year", year.Name))...)
if err != nil {
return nil, err
}
for rows.Next() {
if err = rows.Scan(&month.Name, &month.Posts, &month.Chars, &month.Words, &month.WordsPerPost); err == nil {
months[year.Name] = append(months[year.Name], month)
} else {
return nil, err
}
}
}
data = map[string]interface{}{
"total": total,
"years": years,
"withoutdate": noDate,
"months": months,
}
db.cacheBlogStats(blog, data)
return data, nil
}
func (db *database) cacheBlogStats(blog string, stats map[string]interface{}) {
jb, _ := json.Marshal(stats)
_ = db.cachePersistently("blogstats_"+blog, jb)
}
func (db *database) loadBlogStatsCache(blog string) (stats map[string]interface{}) {
data, err := db.retrievePersistentCache("blogstats_" + blog)
if err != nil || data == nil {
return nil
}
err = json.Unmarshal(data, &stats)
if err != nil {
log.Println(err)
}
return stats
}
func (db *database) resetBlogStats(blog string) {
_ = db.clearPersistentCache("blogstats_" + blog)
}