| 1 | package artist |
| 2 | |
| 3 | import ( |
| 4 | "database/sql" |
| 5 | "encoding/json" |
| 6 | "git.jacobcasper.com/brackets/env" |
| 7 | "git.jacobcasper.com/brackets/routes" |
| 8 | "git.jacobcasper.com/brackets/types" |
| 9 | "github.com/zmb3/spotify" |
| 10 | "log" |
| 11 | "net/http" |
| 12 | ) |
| 13 | |
| 14 | func Index(env *env.Env) routes.Handler { |
| 15 | return func(w http.ResponseWriter, r *http.Request) { |
| 16 | if r.Method != "GET" { |
| 17 | http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed) |
| 18 | return |
| 19 | } |
| 20 | |
| 21 | w.Header().Set("Content-Type", "application/json") |
| 22 | |
| 23 | artistId := r.FormValue("id") |
| 24 | if artistId != "" { |
| 25 | artist := types.Artist{} |
| 26 | row := env.Db.Db.QueryRow(` |
| 27 | SELECT ID, NAME, POPULARITY |
| 28 | FROM ARTIST |
| 29 | WHERE ID = ?`, |
| 30 | artistId, |
| 31 | ) |
| 32 | if err := row.Scan(&artist.ID, &artist.Name, &artist.Popularity); err != nil { |
| 33 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 34 | return |
| 35 | } |
| 36 | b, err := json.Marshal(artist) |
| 37 | if err != nil { |
| 38 | log.Print(err) |
| 39 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 40 | return |
| 41 | } |
| 42 | w.Write(b) |
| 43 | return |
| 44 | } |
| 45 | |
| 46 | rows, err := env.Db.Db.Query(` |
| 47 | SELECT ID, NAME, POPULARITY |
| 48 | FROM ARTIST |
| 49 | LIMIT 20`, |
| 50 | ) |
| 51 | if err != nil { |
| 52 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 53 | return |
| 54 | } |
| 55 | defer rows.Close() |
| 56 | |
| 57 | artists := make([]types.Artist, 0) |
| 58 | for rows.Next() { |
| 59 | artist := types.Artist{} |
| 60 | if err := rows.Scan(&artist.ID, &artist.Name, &artist.Popularity); err != nil { |
| 61 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 62 | return |
| 63 | } |
| 64 | artists = append(artists, artist) |
| 65 | } |
| 66 | if err = rows.Err(); err != nil { |
| 67 | log.Print(err) |
| 68 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 69 | return |
| 70 | } |
| 71 | b, err := json.Marshal(artists) |
| 72 | if err != nil { |
| 73 | log.Print(err) |
| 74 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 75 | return |
| 76 | } |
| 77 | w.Write(b) |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | func Add(env *env.Env) routes.Handler { |
| 82 | return func(w http.ResponseWriter, r *http.Request) { |
| 83 | if r.Method != "POST" { |
| 84 | http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed) |
| 85 | return |
| 86 | } |
| 87 | |
| 88 | r.ParseForm() |
| 89 | artistId := r.PostForm.Get("id") |
| 90 | |
| 91 | if artistId == "" { |
| 92 | http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest) |
| 93 | return |
| 94 | } |
| 95 | |
| 96 | artist, err := env.C.GetArtist(spotify.ID(artistId)) |
| 97 | if err != nil { |
| 98 | log.Printf("Failed to retrieve artist %s: %s", artistId, err.Error()) |
| 99 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 100 | return |
| 101 | } |
| 102 | |
| 103 | env.Db.Mu.Lock() |
| 104 | defer env.Db.Mu.Unlock() |
| 105 | env.Db.Db.Exec(` |
| 106 | INSERT INTO ARTIST |
| 107 | (ID, NAME, POPULARITY) |
| 108 | VALUES (?, ?, ?)`, |
| 109 | artist.ID, |
| 110 | artist.Name, |
| 111 | artist.Popularity, |
| 112 | ) |
| 113 | |
| 114 | for _, genre := range artist.Genres { |
| 115 | var genreId int64 |
| 116 | row := env.Db.Db.QueryRow(` |
| 117 | SELECT ID |
| 118 | FROM GENRE |
| 119 | WHERE NAME = lower(?) |
| 120 | `, |
| 121 | genre, |
| 122 | ) |
| 123 | |
| 124 | err := row.Scan(&genreId) |
| 125 | if err == sql.ErrNoRows { |
| 126 | result, err := env.Db.Db.Exec(` |
| 127 | INSERT INTO GENRE |
| 128 | (NAME) |
| 129 | VALUES (?)`, |
| 130 | genre, |
| 131 | ) |
| 132 | if err != nil { |
| 133 | log.Printf("Failed to insert genre %s: %s", genre, err.Error()) |
| 134 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 135 | return |
| 136 | } |
| 137 | |
| 138 | genreId, err = result.LastInsertId() |
| 139 | if err != nil { |
| 140 | log.Print("Failed to retrieve last insert id: ", err.Error()) |
| 141 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 142 | return |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | env.Db.Db.Exec(` |
| 147 | INSERT INTO ARTIST_GENRE_XREF |
| 148 | (ARTIST_ID, GENRE_ID) |
| 149 | VALUES (?, ?)`, |
| 150 | artist.ID, |
| 151 | genreId, |
| 152 | ) |
| 153 | } |
| 154 | w.WriteHeader(http.StatusCreated) |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | func ByGenre(env *env.Env) routes.Handler { |
| 159 | return func(w http.ResponseWriter, r *http.Request) { |
| 160 | if r.Method != "GET" { |
| 161 | http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed) |
| 162 | return |
| 163 | } |
| 164 | |
| 165 | w.Header().Set("Content-Type", "application/json") |
| 166 | genreName := r.FormValue("genre_name") |
| 167 | if genreName != "" { |
| 168 | rows, err := env.Db.Db.Query(` |
| 169 | SELECT a.ID, a.NAME |
| 170 | FROM ARTIST a |
| 171 | JOIN ARTIST_GENRE_XREF x ON a.ID = x.ARTIST_ID |
| 172 | JOIN GENRE g ON g.ID = x.GENRE_ID |
| 173 | WHERE g.NAME = lower(?) |
| 174 | `, |
| 175 | genreName, |
| 176 | ) |
| 177 | if err != nil { |
| 178 | log.Print(err) |
| 179 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 180 | return |
| 181 | } |
| 182 | defer rows.Close() |
| 183 | |
| 184 | artists := make([]types.Artist, 0) |
| 185 | for rows.Next() { |
| 186 | artist := types.Artist{} |
| 187 | if err := rows.Scan(&artist.ID, &artist.Name, &artist.Popularity); err != nil { |
| 188 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 189 | return |
| 190 | } |
| 191 | artists = append(artists, artist) |
| 192 | } |
| 193 | if err = rows.Err(); err != nil { |
| 194 | log.Print(err) |
| 195 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 196 | return |
| 197 | } |
| 198 | b, err := json.Marshal(artists) |
| 199 | if err != nil { |
| 200 | log.Print(err) |
| 201 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) |
| 202 | return |
| 203 | } |
| 204 | w.Write(b) |
| 205 | } |
| 206 | } |
| 207 | } |