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package main
import (
"database/sql"
"fmt"
"strings"
)
func ConfigureFollowedTags() {
db := GetDatabase()
fmt.Println("At the moment you follow the following tags:")
// Get the tags that the user is following
tags := GetFollowedTags(db)
// Show the tags
for _, tag := range tags {
fmt.Print(tag, " ")
}
fmt.Println()
fmt.Println("Enter the tags you want to follow, separated by spaces\nTo remove tags, prefix them with a minus sign: ")
newtags := Readline()
// Split the tags into an array and insert them into database DB
// using table "followed_tags"
tagArray := strings.Split(newtags, " ")
for _, tag := range tagArray {
tag = strings.Trim(tag, " \n")
if !strings.HasPrefix(tag, "-") {
_, err := db.Exec("INSERT INTO followed_tags(tag) VALUES(?)", tag)
if err != nil {
fmt.Println(err)
}
} else {
_, err := db.Exec("DELETE FROM followed_tags WHERE tag=?", tag[1:])
if err != nil {
fmt.Println(err)
}
}
}
}
func GetFollowedTags(db *sql.DB) []string {
// Get the tags from the database
rows, err := db.Query("SELECT tag FROM followed_tags")
if err != nil {
fmt.Println(err)
}
var tags []string
for rows.Next() {
var tag string
err = rows.Scan(&tag)
if err != nil {
fmt.Println(err)
}
tags = append(tags, tag)
}
return tags
}
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