"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getCachedSyncGeneratorChanges = getCachedSyncGeneratorChanges;
exports.flushSyncGeneratorChangesToDisk = flushSyncGeneratorChangesToDisk;
exports.collectAndScheduleSyncGenerators = collectAndScheduleSyncGenerators;
exports.getCachedRegisteredSyncGenerators = getCachedRegisteredSyncGenerators;
exports._getConflictingGeneratorGroups = _getConflictingGeneratorGroups;
const nx_json_1 = require("../../config/nx-json");
const tree_1 = require("../../generators/tree");
const file_hasher_1 = require("../../hasher/file-hasher");
const project_graph_1 = require("../../project-graph/project-graph");
const sync_generators_1 = require("../../utils/sync-generators");
const workspace_root_1 = require("../../utils/workspace-root");
const logger_1 = require("./logger");
const project_graph_incremental_recomputation_1 = require("./project-graph-incremental-recomputation");
const syncGeneratorsCacheResultPromises = new Map();
let registeredTaskSyncGenerators = new Set();
let registeredGlobalSyncGenerators = new Set();
const scheduledGenerators = new Set();
let waitPeriod = 100;
let registeredSyncGenerators;
let scheduledTimeoutId;
let storedProjectGraphHash;
let storedNxJsonHash;
let storedDisabledTaskSyncGeneratorsHash;
const log = (...messageParts) => {
    logger_1.serverLogger.log('[SYNC]:', ...messageParts);
};
async function getCachedSyncGeneratorChanges(generators) {
    try {
        log('get sync generators changes on demand', generators);
        // this is invoked imperatively, so we clear any scheduled run
        if (scheduledTimeoutId) {
            log('clearing scheduled run');
            clearTimeout(scheduledTimeoutId);
            scheduledTimeoutId = undefined;
        }
        // reset the wait time
        waitPeriod = 100;
        const results = await getFromCacheOrRunGenerators(generators);
        const conflicts = _getConflictingGeneratorGroups(results);
        if (!conflicts.length) {
            // there are no conflicts
            return results;
        }
        // there are conflicts, so we need to re-run the conflicting generators
        // using the same tree
        return await processConflictingGenerators(conflicts, results);
    }
    catch (e) {
        console.error(e);
        syncGeneratorsCacheResultPromises.clear();
        return [];
    }
}
async function flushSyncGeneratorChangesToDisk(generators) {
    log('flush sync generators changes', generators);
    const results = await getCachedSyncGeneratorChanges(generators);
    for (const generator of generators) {
        syncGeneratorsCacheResultPromises.delete(generator);
    }
    await (0, sync_generators_1.flushSyncGeneratorChanges)(results);
}
function collectAndScheduleSyncGenerators(projectGraph) {
    if (!projectGraph) {
        // If the project graph is not available, we can't collect and schedule
        // sync generators. The project graph error will be reported separately.
        return;
    }
    log('collect registered sync generators');
    collectAllRegisteredSyncGenerators(projectGraph);
    // a change imply we need to re-run all the generators
    // make sure to schedule all the collected generators
    scheduledGenerators.clear();
    if (!registeredSyncGenerators.size) {
        // there are no generators to run
        return;
    }
    for (const generator of registeredSyncGenerators) {
        scheduledGenerators.add(generator);
    }
    log('scheduling:', [...scheduledGenerators]);
    if (scheduledTimeoutId) {
        // we have a scheduled run already, so we don't need to do anything
        return;
    }
    scheduledTimeoutId = setTimeout(async () => {
        scheduledTimeoutId = undefined;
        if (waitPeriod < 4000) {
            waitPeriod = waitPeriod * 2;
        }
        if (scheduledGenerators.size === 0) {
            // no generators to run
            return;
        }
        const { projects } = (0, project_graph_1.readProjectsConfigurationFromProjectGraph)(projectGraph);
        for (const generator of scheduledGenerators) {
            syncGeneratorsCacheResultPromises.set(generator, runGenerator(generator, projects));
        }
        await Promise.all(syncGeneratorsCacheResultPromises.values());
    }, waitPeriod);
}
async function getCachedRegisteredSyncGenerators() {
    log('get registered sync generators');
    if (!registeredSyncGenerators) {
        log('no registered sync generators, collecting them');
        const { projectGraph } = await (0, project_graph_incremental_recomputation_1.getCachedSerializedProjectGraphPromise)();
        collectAllRegisteredSyncGenerators(projectGraph);
    }
    else {
        log('registered sync generators already collected, returning them');
    }
    return [...registeredSyncGenerators];
}
async function getFromCacheOrRunGenerators(generators) {
    let projects;
    let errored = false;
    const getProjectsConfigurations = async () => {
        if (projects || errored) {
            return projects;
        }
        const { projectGraph, error } = await (0, project_graph_incremental_recomputation_1.getCachedSerializedProjectGraphPromise)();
        projects = projectGraph
            ? (0, project_graph_1.readProjectsConfigurationFromProjectGraph)(projectGraph).projects
            : null;
        errored = error !== undefined;
        return projects;
    };
    return (await Promise.all(generators.map(async (generator) => {
        if (scheduledGenerators.has(generator) ||
            !syncGeneratorsCacheResultPromises.has(generator)) {
            // it's scheduled to run (there are pending changes to process) or
            // it's not scheduled and there's no cached result, so run it
            const projects = await getProjectsConfigurations();
            if (projects) {
                log(generator, 'already scheduled or not cached, running it now');
                syncGeneratorsCacheResultPromises.set(generator, runGenerator(generator, projects));
            }
            else {
                log(generator, 'already scheduled or not cached, project graph errored');
                /**
                 * This should never happen. This is invoked imperatively, and by
                 * the time it is invoked, the project graph would have already
                 * been requested. If it errored, it would have been reported and
                 * this wouldn't have been invoked. We handle it just in case.
                 *
                 * Since the project graph would be reported by the relevant
                 * handlers separately, we just ignore the error, don't cache
                 * any result and return an empty result, the next time this is
                 * invoked the process will repeat until it eventually recovers
                 * when the project graph is fixed.
                 */
                return Promise.resolve({ changes: [], generatorName: generator });
            }
        }
        else {
            log(generator, 'not scheduled and has cached result, returning cached result');
        }
        return syncGeneratorsCacheResultPromises.get(generator);
    }))).flat();
}
async function runConflictingGenerators(tree, generators) {
    const { projectGraph } = await (0, project_graph_incremental_recomputation_1.getCachedSerializedProjectGraphPromise)();
    const projects = projectGraph
        ? (0, project_graph_1.readProjectsConfigurationFromProjectGraph)(projectGraph).projects
        : null;
    if (!projects) {
        /**
         * This should never happen. This is invoked imperatively, and by
         * the time it is invoked, the project graph would have already
         * been requested. If it errored, it would have been reported and
         * this wouldn't have been invoked. We handle it just in case.
         *
         * Since the project graph would be reported by the relevant
         * handlers separately, we just ignore the error.
         */
        return generators.map((generator) => ({
            changes: [],
            generatorName: generator,
        }));
    }
    // we need to run conflicting generators sequentially because they use the same tree
    const results = [];
    for (const generator of generators) {
        log(generator, 'running it now');
        results.push(await runGenerator(generator, projects, tree));
    }
    return results;
}
async function processConflictingGenerators(conflicts, initialResults) {
    const conflictRunResults = (await Promise.all(conflicts.map((generators) => {
        const [firstGenerator, ...generatorsToRun] = generators;
        // it must exists because the conflicts were identified from the initial results
        const firstGeneratorResult = initialResults.find((r) => r.generatorName === firstGenerator);
        const tree = new tree_1.FsTree(workspace_root_1.workspaceRoot, false, `running sync generators ${generators.join(',')}`);
        // pre-apply the changes from the first generator to avoid running it
        for (const change of firstGeneratorResult.changes) {
            if (change.type === 'CREATE' || change.type === 'UPDATE') {
                tree.write(change.path, change.content, change.options);
            }
            else if (change.type === 'DELETE') {
                tree.delete(change.path);
            }
        }
        /**
         * We don't cache the results of conflicting generators because they
         * use the same tree, so some files might contain results from multiple
         * generators and we don't have guarantees that the same combination of
         * generators will run together.
         */
        return runConflictingGenerators(tree, generatorsToRun);
    }))).flat();
    /**
     * The order of the results from the re-run generators is important because
     * the last result from a group of conflicting generators will contain the
     * changes from the previous conflicting generators. So, instead of replacing
     * in-place the initial results, we first add the results from the re-run
     * generators, and then add the initial results that were not from a
     * conflicting generator.
     */
    const results = [...conflictRunResults];
    for (const result of initialResults) {
        if (conflictRunResults.every((r) => r.generatorName !== result.generatorName)) {
            // this result is not from a conflicting generator, so we add it to the
            // results
            results.push(result);
        }
    }
    return results;
}
/**
 * @internal
 */
function _getConflictingGeneratorGroups(results) {
    const changedFileToGeneratorMap = new Map();
    for (const result of results) {
        for (const change of result.changes) {
            if (!changedFileToGeneratorMap.has(change.path)) {
                changedFileToGeneratorMap.set(change.path, new Set());
            }
            changedFileToGeneratorMap.get(change.path).add(result.generatorName);
        }
    }
    const conflicts = [];
    for (const generatorSet of changedFileToGeneratorMap.values()) {
        if (generatorSet.size === 1) {
            // no conflicts
            continue;
        }
        if (conflicts.length === 0) {
            // there are no conflicts yet, so we just add the first group
            conflicts.push(new Set(generatorSet));
            continue;
        }
        // identify if any of the current generator sets intersect with any of the
        // existing conflict groups
        const generatorsArray = Array.from(generatorSet);
        const existingConflictGroup = conflicts.find((group) => generatorsArray.some((generator) => group.has(generator)));
        if (existingConflictGroup) {
            // there's an intersecting group, so we merge the two
            for (const generator of generatorsArray) {
                existingConflictGroup.add(generator);
            }
        }
        else {
            // there's no intersecting group, so we create a new one
            conflicts.push(new Set(generatorsArray));
        }
    }
    return conflicts.map((group) => Array.from(group));
}
function collectAllRegisteredSyncGenerators(projectGraph) {
    const nxJson = (0, nx_json_1.readNxJson)();
    const projectGraphHash = hashProjectGraph(projectGraph);
    const disabledTaskSyncGeneratorsHash = (0, file_hasher_1.hashArray)(nxJson.sync?.disabledTaskSyncGenerators?.sort() ?? []);
    if (projectGraphHash !== storedProjectGraphHash ||
        disabledTaskSyncGeneratorsHash !== storedDisabledTaskSyncGeneratorsHash) {
        storedProjectGraphHash = projectGraphHash;
        storedDisabledTaskSyncGeneratorsHash = disabledTaskSyncGeneratorsHash;
        registeredTaskSyncGenerators =
            (0, sync_generators_1.collectEnabledTaskSyncGeneratorsFromProjectGraph)(projectGraph, nxJson);
    }
    else {
        log('project graph hash is the same, not collecting task sync generators');
    }
    const nxJsonHash = (0, file_hasher_1.hashArray)(nxJson.sync?.globalGenerators?.sort() ?? []);
    if (storedNxJsonHash !== nxJsonHash) {
        storedNxJsonHash = nxJsonHash;
        registeredGlobalSyncGenerators =
            (0, sync_generators_1.collectRegisteredGlobalSyncGenerators)(nxJson);
    }
    else {
        log('nx.json hash is the same, not collecting global sync generators');
    }
    const generators = new Set([
        ...registeredTaskSyncGenerators,
        ...registeredGlobalSyncGenerators,
    ]);
    if (!registeredSyncGenerators) {
        registeredSyncGenerators = generators;
        return;
    }
    for (const generator of registeredSyncGenerators) {
        if (!generators.has(generator)) {
            registeredSyncGenerators.delete(generator);
            syncGeneratorsCacheResultPromises.delete(generator);
        }
    }
    for (const generator of generators) {
        if (!registeredSyncGenerators.has(generator)) {
            registeredSyncGenerators.add(generator);
        }
    }
}
function runGenerator(generator, projects, tree) {
    log('running scheduled generator', generator);
    // remove it from the scheduled set
    scheduledGenerators.delete(generator);
    tree ??= new tree_1.FsTree(workspace_root_1.workspaceRoot, false, `running sync generator ${generator}`);
    return (0, sync_generators_1.runSyncGenerator)(tree, generator, projects).then((result) => {
        log(generator, 'changes:', result.changes.map((c) => c.path).join(', '));
        return result;
    });
}
function hashProjectGraph(projectGraph) {
    const stringifiedProjects = Object.entries(projectGraph.nodes)
        .sort(([projectNameA], [projectNameB]) => projectNameA.localeCompare(projectNameB))
        .map(([projectName, projectConfig]) => `${projectName}:${JSON.stringify(projectConfig)}`);
    return (0, file_hasher_1.hashArray)(stringifiedProjects);
}
