Build and Run

//
//  GettingStarted.m
//  code-snippets
//
//  Copyright © 2025 couchbase. All rights reserved.
//

#import "GettingStarted.h"
#import <CouchbaseLite/CouchbaseLite.h>

@implementation GettingStarted

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    [self getStartedWithReplication: false];
}

- (void) getStartedWithReplication: (Boolean) replication {
    NSError *error;
    
    // Get the database (and create it if it doesn’t exist).
    CBLDatabase *database = [[CBLDatabase alloc] initWithName: @"mydb" error: &error];
    CBLCollection *collection = [database defaultCollection: &error];

    // Create a new document (i.e. a record) in the database.
    CBLMutableDocument *mutableDoc = [[CBLMutableDocument alloc] init];
    [mutableDoc setFloat:2.0 forKey:@"version"];
    [mutableDoc setString:@"SDK" forKey:@"type"];

    // Save it to the database.
    [collection saveDocument: mutableDoc error: &error];

    // Update a document.
    CBLMutableDocument *mutableDoc2 = [[collection documentWithID: mutableDoc.id error: &error] toMutable];
    [mutableDoc2 setString: @"Objective-C" forKey: @"language"];
    [collection saveDocument: mutableDoc2 error: &error];

    CBLDocument *document = [collection documentWithID: mutableDoc2.id error: &error];
    // Log the document ID (generated by the database)
    // and properties
    NSLog(@"Document ID :: %@", document.id);
    NSLog(@"Learning %@", [document stringForKey:@"language"]);

    // Create a query to fetch documents of type SDK.
    CBLQueryExpression *type = [[CBLQueryExpression property:@"type"] equalTo:[CBLQueryExpression string:@"SDK"]];
    CBLQuery *query = [CBLQueryBuilder select:@[[CBLQuerySelectResult all]]
                                          from:[CBLQueryDataSource collection: collection]
                                         where:type];

    // Run the query
    CBLQueryResultSet *result = [query execute:&error];
    NSLog(@"Number of rows :: %lu", (unsigned long)[[result allResults] count]);

    if (replication) {

        // Create replicators to push and pull changes to and from the cloud.
        NSURL *url = [[NSURL alloc] initWithString:@"ws://localhost:4984/getting-started-db"];
        CBLURLEndpoint *targetEndpoint = [[CBLURLEndpoint alloc] initWithURL:url];
        
        CBLCollectionConfiguration* collectionConfig = [[CBLCollectionConfiguration alloc] initWithCollection: collection];
        CBLReplicatorConfiguration* replConfig = [[CBLReplicatorConfiguration alloc] initWithCollections: @[collectionConfig] target:targetEndpoint];
        
        replConfig.replicatorType = kCBLReplicatorTypePushAndPull;
        // Add authentication.
        replConfig.authenticator = [[CBLBasicAuthenticator alloc] initWithUsername:@"john" password:@"pass"];
        
        // Create replicator
        CBLReplicator *_replicator = [[CBLReplicator alloc] initWithConfig: replConfig];

        // Listen to replicator change events.
        [_replicator addChangeListener:^(CBLReplicatorChange *change) {
            if (change.status.error) {
                NSLog(@"Error code: %ld", change.status.error.code);
            }
        }];

        // Start replication
        [_replicator start];

    } else {
        NSLog(@"Not running replication");
    }
}

@end