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        <h1><a href="../../../index.html">All files</a> / <a href="index.html">src/lib/services</a> environment-service.ts</h1>
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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">import { IUnleashStores } from '../types/stores';
import { IUnleashConfig } from '../types/option';
import { Logger } from '../logger';
import { IEnvironment, ISortOrder } from '../types/model';
import { UNIQUE_CONSTRAINT_VIOLATION } from '../error/db-error';
import NameExistsError from '../error/name-exists-error';
import { sortOrderSchema } from './state-schema';
import NotFoundError from '../error/notfound-error';
import { IEnvironmentStore } from '../types/stores/environment-store';
import { IFeatureStrategiesStore } from '../types/stores/feature-strategies-store';
import { IFeatureEnvironmentStore } from '../types/stores/feature-environment-store';
import { IProjectStore } from 'lib/types/stores/project-store';
import MinimumOneEnvironmentError from '../error/minimum-one-environment-error';
&nbsp;
export default class EnvironmentService {
    private logger: Logger;
&nbsp;
    private environmentStore: IEnvironmentStore;
&nbsp;
    private featureStrategiesStore: IFeatureStrategiesStore;
&nbsp;
    private projectStore: IProjectStore;
&nbsp;
    private featureEnvironmentStore: IFeatureEnvironmentStore;
&nbsp;
    constructor(
        {
            environmentStore,
            featureStrategiesStore,
            featureEnvironmentStore,
            projectStore,
        }: Pick&lt;
            IUnleashStores,
            | 'environmentStore'
            | 'featureStrategiesStore'
            | 'featureEnvironmentStore'
            | 'projectStore'
        &gt;,
        { getLogger }: Pick&lt;IUnleashConfig, 'getLogger'&gt;,
    ) {
        this.logger = getLogger('services/environment-service.ts');
        this.environmentStore = environmentStore;
        this.featureStrategiesStore = featureStrategiesStore;
        this.featureEnvironmentStore = featureEnvironmentStore;
        this.projectStore = projectStore;
    }
&nbsp;
    async getAll(): Promise&lt;IEnvironment[]&gt; {
        return this.environmentStore.getAll();
    }
&nbsp;
    async get(name: string): Promise&lt;IEnvironment&gt; {
        return this.environmentStore.get(name);
    }
&nbsp;
    async updateSortOrder(sortOrder: ISortOrder): Promise&lt;void&gt; {
        await sortOrderSchema.validateAsync(sortOrder);
        await Promise.all(
            Object.keys(sortOrder).map((key) =&gt; {
                const value = sortOrder[key];
                return this.environmentStore.updateSortOrder(key, value);
            }),
        );
    }
&nbsp;
    async toggleEnvironment(name: string, value: boolean): Promise&lt;void&gt; {
        const exists = await this.environmentStore.exists(name);
        if (exists) {
            return this.environmentStore.updateProperty(name, 'enabled', value);
        }
        throw new NotFoundError(`Could not find environment ${name}`);
    }
&nbsp;
    async addEnvironmentToProject(
        environment: string,
        projectId: string,
    ): Promise&lt;void&gt; {
        try {
            await this.featureEnvironmentStore.connectProject(
                environment,
                projectId,
            );
            await this.featureEnvironmentStore.connectFeatures(
                environment,
                projectId,
            );
        } catch (e) {
            if (e.code === UNIQUE_CONSTRAINT_VIOLATION) {
                throw new NameExistsError(
                    `${projectId} already has the environment ${environment} enabled`,
                );
            }
<span class="cstat-no" title="statement not covered" >            throw e;</span>
        }
    }
&nbsp;
    async overrideEnabledProjects(
        environmentNamesToEnable: string[],
    ): Promise&lt;void&gt; {
        if (environmentNamesToEnable.length === 0) {
            return Promise.resolve();
        }
&nbsp;
        const allEnvironments = await this.environmentStore.getAll();
        const existingEnvironmentsToEnable = allEnvironments.filter((env) =&gt;
            environmentNamesToEnable.includes(env.name),
        );
&nbsp;
        <span class="missing-if-branch" title="if path not taken" >I</span>if (
            existingEnvironmentsToEnable.length !==
            environmentNamesToEnable.length
        ) {
<span class="cstat-no" title="statement not covered" >            this.logger.warn(</span>
                "Found environment enabled overrides but some of the specified environments don't exist, no overrides will be executed",
            );
<span class="cstat-no" title="statement not covered" >            return Promise.resolve();</span>
        }
&nbsp;
        const environmentsNotAlreadyEnabled =
            existingEnvironmentsToEnable.filter((env) =&gt; env.enabled == false);
        const environmentsToDisable = allEnvironments.filter((env) =&gt; {
            return (
                !environmentNamesToEnable.includes(env.name) &amp;&amp;
                env.enabled == true
            );
        });
&nbsp;
        await this.environmentStore.disable(environmentsToDisable);
        await this.environmentStore.enable(environmentsNotAlreadyEnabled);
&nbsp;
        await this.remapProjectsLinks(
            environmentsToDisable,
            environmentsNotAlreadyEnabled,
        );
    }
&nbsp;
    private async remapProjectsLinks(
        toDisable: IEnvironment[],
        toEnable: IEnvironment[],
    ) {
        const projectLinks =
            await this.projectStore.getProjectLinksForEnvironments(
                toDisable.map((env) =&gt; env.name),
            );
&nbsp;
        const unlinkTasks = projectLinks.map((link) =&gt; {
            return this.forceRemoveEnvironmentFromProject(
                link.environmentName,
                link.projectId,
            );
        });
        await Promise.all(unlinkTasks.flat());
&nbsp;
        const uniqueProjects = [
            ...new Set(projectLinks.map((link) =&gt; link.projectId)),
        ];
&nbsp;
        let linkTasks = uniqueProjects.map((project) =&gt; {
            return toEnable.map((enabledEnv) =&gt; {
                return this.addEnvironmentToProject(enabledEnv.name, project);
            });
        });
&nbsp;
        await Promise.all(linkTasks.flat());
    }
&nbsp;
    async forceRemoveEnvironmentFromProject(
        environment: string,
        projectId: string,
    ): Promise&lt;void&gt; {
        await this.featureEnvironmentStore.disconnectFeatures(
            environment,
            projectId,
        );
        await this.featureEnvironmentStore.disconnectProject(
            environment,
            projectId,
        );
    }
&nbsp;
    async removeEnvironmentFromProject(
        environment: string,
        projectId: string,
    ): Promise&lt;void&gt; {
        const projectEnvs = await this.projectStore.getEnvironmentsForProject(
            projectId,
        );
&nbsp;
        if (projectEnvs.length &gt; 1) {
            await this.forceRemoveEnvironmentFromProject(
                environment,
                projectId,
            );
            return;
        }
        throw new MinimumOneEnvironmentError(
            'You must always have one active environment',
        );
    }
}
&nbsp;</pre></td></tr></table></pre>

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