private detectDocDBConnections()

in src/tree/CosmosDBTreeItem.ts [239:280]
34 lines of code
9 McCabe index (conditional complexity)

    private detectDocDBConnections(appSettings: { [propertyName: string]: string }): IDetectedConnection[] {
        const connectionStringEndpointPrefix = 'AccountEndpoint=';
        const connectionStringKeyPrefix = 'AccountKey=';

        const result: IDetectedConnection[] = [];
        const regexp = new RegExp(`(.+)${this._endpointSuffix}`, 'i');
        for (const key of Object.keys(appSettings)) {
            // First, check for connection string split up into multiple app settings (endpoint, key, and optional database id)
            const match = key && key.match(regexp);
            if (match) {
                const prefix = match[1];
                const endpointKey = prefix + this._endpointSuffix;
                const keyKey = prefix + this._keySuffix;
                const documentEndpoint: string | undefined = appSettings[endpointKey];
                const masterKey: string | undefined = appSettings[keyKey];

                if (documentEndpoint && masterKey) {
                    const keys: string[] = [endpointKey, keyKey];
                    let connectionString = `${connectionStringEndpointPrefix}${documentEndpoint};${connectionStringKeyPrefix}${masterKey};`;

                    const databaseKey = prefix + this._databaseSuffix;
                    if (Object.keys(appSettings).find((k) => k === databaseKey)) {
                        keys.push(databaseKey);
                        connectionString += `Database=${appSettings[databaseKey]}`;
                    }

                    result.push({ keys, connectionString });
                }
            } else {
                // Second, check for connection string as one app setting
                const regExp1 = new RegExp(connectionStringEndpointPrefix, 'i');
                const regExp2 = new RegExp(connectionStringKeyPrefix, 'i');

                const value: string = appSettings[key];
                if (regExp1.test(value) && regExp2.test(value)) {
                    result.push({ keys: [key], connectionString: value });
                }
            }
        }

        return result;
    }