7566fb39f9
Tweaked database schema. Ensure we enable FOREIGN KEYS. Refactored how and when we are doing cover art and track fetching for an album.
73 lines
2.7 KiB
C
73 lines
2.7 KiB
C
/* db.c
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*
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* Copyright 2021 Joshua Strobl
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <glib-2.0/glib.h>
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#include <sqlite3.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "db.h"
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sqlite3 *koto_db = NULL;
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void close_db() {
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sqlite3_close(koto_db);
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}
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void create_db_tables() {
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char *tables_creation_queries = "CREATE TABLE IF NOT EXISTS artists(id string UNIQUE PRIMARY KEY, path string, type int, name string, art_path string);"
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"CREATE TABLE IF NOT EXISTS albums(id string UNIQUE PRIMARY KEY, path string, artist_id string, name string, art_path string, FOREIGN KEY(artist_id) REFERENCES artists(id) ON DELETE CASCADE);"
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"CREATE TABLE IF NOT EXISTS tracks(id string UNIQUE PRIMARY KEY, path string, type int, artist_id string, album_id string, file_name string, name string, disc int, position int, FOREIGN KEY(artist_id) REFERENCES artists(id) ON DELETE CASCADE);";
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gchar *create_tables_errmsg = NULL;
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int rc = sqlite3_exec(koto_db, tables_creation_queries, 0,0, &create_tables_errmsg);
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if (rc != SQLITE_OK) {
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g_critical("Failed to create required tables: %s", create_tables_errmsg);
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}
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}
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void enable_foreign_keys() {
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gchar *enable_foreign_keys_err = NULL;
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int rc = sqlite3_exec(koto_db, "PRAGMA foreign_keys = ON;", 0, 0, &enable_foreign_keys_err);
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if (rc != SQLITE_OK) {
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g_critical("Failed to enable foreign key support. Ensure your sqlite3 is compiled with neither SQLITE_OMIT_FOREIGN_KEY or SQLITE_OMIT_TRIGGER defined: %s", enable_foreign_keys_err);
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}
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g_free(enable_foreign_keys_err);
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}
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void open_db() {
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const gchar *data_home = g_get_user_data_dir();
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gchar *data_dir = g_build_path(G_DIR_SEPARATOR_S, data_home, "com.github.joshstrobl.koto", NULL);
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mkdir(data_home, 0755);
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mkdir(data_dir, 0755);
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chown(data_dir, getuid(), getgid());
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gchar *db_path = g_build_filename(data_dir, "db", NULL); // Build out our path using XDG_DATA_HOME (e.g. .local/share/) + our namespace + db as the file name
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int rc = sqlite3_open(db_path, &koto_db);
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if (rc) {
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g_critical("Failed to open or create database: %s", sqlite3_errmsg(koto_db));
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return;
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}
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enable_foreign_keys(); // Enable FOREIGN KEY support
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create_db_tables(); // Attempt to create our database tables
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}
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