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msd-core/get-shit-done/bin/lib/surface.cjs

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'use strict';
/**
* Runtime surface module — ADR-0011 Phase 2 (Option B).
*
* Manages the runtime enable/disable surface state (the `.gsd-surface.json` marker in
* each runtime's skills dir) independently of the install-time profile marker
* (`.gsd-profile`). Runtime config locations are resolved by callers.
*
* Effective skill set = base profile ∪ explicitAdds − disabledClusters − explicitRemoves,
* then transitively closed via the manifest.
*
* Exports:
* readSurface(runtimeConfigDir)
* writeSurface(runtimeConfigDir, surfaceState)
* resolveSurface(runtimeConfigDir, manifest, clusterMap)
* applySurface(runtimeConfigDir, layout, manifest, clusterMap)
* listSurface(runtimeConfigDir, layout, manifest, clusterMap)
*/
const fs = require('fs');
const path = require('path');
const os = require('os');
const { platformWriteSync } = require('./shell-command-projection.cjs');
const {
readActiveProfile,
resolveProfile,
stageSkillsForProfile,
stageAgentsForProfile,
loadSkillsManifest,
PROFILES,
} = require('./install-profiles.cjs');
const { CLUSTERS, allClusteredSkills } = require('./clusters.cjs');
const { findInstallSourceRoot } = require('./runtime-artifact-layout.cjs');
const SURFACE_FILE_NAME = '.gsd-surface.json';
// ---------------------------------------------------------------------------
// State IO
// ---------------------------------------------------------------------------
/**
* @typedef {Object} SurfaceState
* @property {string} baseProfile
* @property {string[]} disabledClusters
* @property {string[]} explicitAdds
* @property {string[]} explicitRemoves
*/
/**
* Read the surface state from a runtime config directory.
*
* @param {string} runtimeConfigDir
* @returns {SurfaceState|null} null if file missing or corrupt
*/
function readSurface(runtimeConfigDir) {
const filePath = path.join(runtimeConfigDir, SURFACE_FILE_NAME);
try {
const raw = fs.readFileSync(filePath, 'utf8');
const parsed = JSON.parse(raw);
// Structural validation — must have these fields with expected types
if (typeof parsed !== 'object' || parsed === null) return null;
if (typeof parsed.baseProfile !== 'string') return null;
if (!Array.isArray(parsed.disabledClusters)) return null;
if (!Array.isArray(parsed.explicitAdds)) return null;
if (!Array.isArray(parsed.explicitRemoves)) return null;
return {
baseProfile: parsed.baseProfile,
disabledClusters: parsed.disabledClusters,
explicitAdds: parsed.explicitAdds,
explicitRemoves: parsed.explicitRemoves,
};
} catch {
return null;
}
}
/**
* Write the surface state atomically via the platform seam (mkdir + tmp+rename).
*
* @param {string} runtimeConfigDir
* @param {SurfaceState} surfaceState
*/
function writeSurface(runtimeConfigDir, surfaceState) {
platformWriteSync(path.join(runtimeConfigDir, SURFACE_FILE_NAME), JSON.stringify(surfaceState, null, 2) + '\n');
}
// ---------------------------------------------------------------------------
// Resolution
// ---------------------------------------------------------------------------
/**
* Expand cluster names to skill stems using the provided clusterMap.
*
* @param {string[]} clusterNames
* @param {Object} clusterMap CLUSTERS or override
* @returns {Set<string>}
*/
function clustersToSkills(clusterNames, clusterMap) {
const result = new Set();
for (const name of clusterNames) {
const members = clusterMap[name];
if (members) {
for (const s of members) result.add(s);
}
}
return result;
}
/**
* Resolve the effective surface to a typed profile-like object.
* Shape: { name, skills: Set<string>|'*', agents: Set<string> }
*
* Resolution order:
* 1. Start with base profile resolved via resolveProfile()
* 2. Remove skills in disabled clusters
* 3. Add explicitAdds (and their transitive closure)
* 4. Remove explicitRemoves (only the stem itself, no cascade)
*
* @param {string} runtimeConfigDir
* @param {Map<string, string[]>} manifest
* @param {Object} [clusterMap] defaults to CLUSTERS
* @returns {{ name: string, skills: Set<string>, agents: Set<string> }}
*/
function resolveSurface(runtimeConfigDir, manifest, clusterMap) {
const cm = clusterMap || CLUSTERS;
const surface = readSurface(runtimeConfigDir);
// Determine base profile name: from surface state or from .gsd-profile marker
const baseProfileName = (surface && surface.baseProfile)
? surface.baseProfile
: (readActiveProfile(runtimeConfigDir) || 'full');
// Resolve base profile
const baseResolved = resolveProfile({
modes: baseProfileName.split(',').map(s => s.trim()),
manifest,
});
// If full, we need to enumerate all skills from the manifest
let skills;
if (baseResolved.skills === '*') {
// Materialize all skill stems from manifest
skills = new Set();
for (const [key] of manifest) {
if (!key.startsWith('_calls_agents_')) skills.add(key);
}
} else {
skills = new Set(baseResolved.skills);
}
if (surface) {
// Step 2: remove disabled cluster members
const disabledSkills = clustersToSkills(surface.disabledClusters, cm);
for (const s of disabledSkills) skills.delete(s);
// Step 3: add explicitAdds with transitive closure
if (surface.explicitAdds.length > 0) {
const addSet = new Set(surface.explicitAdds);
// Compute closure of adds
const queue = [...addSet];
const visited = new Set(addSet);
while (queue.length > 0) {
const stem = queue.pop();
const deps = manifest.get(stem) || [];
for (const dep of deps) {
if (!visited.has(dep)) {
visited.add(dep);
queue.push(dep);
}
}
}
for (const s of visited) skills.add(s);
}
// Step 4: remove explicitRemoves (stem only, no cascade)
for (const s of surface.explicitRemoves) {
skills.delete(s);
}
}
// Derive agents from skills
const agents = new Set();
for (const skillStem of skills) {
const agentRefs = manifest.get(`_calls_agents_${skillStem}`) || [];
for (const agentStem of agentRefs) agents.add(agentStem);
}
const name = surface ? `surface:${surface.baseProfile}` : `profile:${baseProfileName}`;
return { name, skills, agents };
}
// ---------------------------------------------------------------------------
// Apply
// ---------------------------------------------------------------------------
/**
* Re-stage the active surface using the resolved layout.
* Iterates layout.kinds and syncs each artifact kind to its destination.
*
* @param {string} runtimeConfigDir
* @param {import('./runtime-artifact-layout.cjs').Layout} layout
* @param {Map<string, string[]>} manifest
* @param {Object} [clusterMap]
*/
function applySurface(runtimeConfigDir, layout, manifest, clusterMap) {
if (path.resolve(runtimeConfigDir) !== path.resolve(layout.configDir)) {
throw new TypeError('applySurface runtimeConfigDir must match layout.configDir');
}
const resolved = resolveSurface(layout.configDir, manifest, clusterMap);
for (const kind of layout.kinds) {
const staged = kind.stage(resolved);
const dest = path.join(layout.configDir, kind.destSubpath);
_syncGsdDir(staged, dest, kind, manifest);
}
return resolved;
}
/**
* Sync destination directory from staged source.
*
* For 'commands' kind: iterate *.md files in destDir, remove if not in staged set.
* For 'agents' kind: same, but only remove files starting with 'gsd-' prefix.
* For 'skills' kind: iterate directories in destDir matching kind.prefix; add missing
* by copying recursively; remove dirs not in staged set. Preserves dirs not matching
* the prefix (user-owned skills).
*
* For Hermes (empty prefix): uses manifest membership to discriminate GSD-owned vs
* user-owned dirs. GSD-owned = stem in manifest; removal targets = in manifest AND
* not in staged set. User-owned (not in manifest) are always preserved.
*
* @param {string} stagedDir source (staged temp dir or original)
* @param {string} destDir runtime destination
* @param {import('./runtime-artifact-layout.cjs').ArtifactKind|'commands'|'agents'} kind
* @param {Map<string, string[]>} [manifest] optional; required for Hermes empty-prefix removal
*/
function _syncGsdDir(stagedDir, destDir, kind, manifest) {
if (!fs.existsSync(stagedDir)) return;
fs.mkdirSync(destDir, { recursive: true });
// Normalize: allow legacy string context for backward-compat with internal callers
const kindName = (typeof kind === 'string') ? kind : kind.kind;
const kindPrefix = (typeof kind === 'object' && kind !== null) ? kind.prefix : 'gsd-';
if (kindName === 'skills') {
// Skills kind: work with directories, not files.
// Each staged entry is a directory named ${prefix}${stem}.
const stagedDirs = new Set(
fs.readdirSync(stagedDir).filter(entry => {
return fs.statSync(path.join(stagedDir, entry)).isDirectory();
})
);
// Copy missing dirs from staged to dest
for (const dirName of stagedDirs) {
const destSubDir = path.join(destDir, dirName);
if (!fs.existsSync(destSubDir)) {
fs.cpSync(path.join(stagedDir, dirName), destSubDir, { recursive: true });
} else {
// Overwrite to ensure content is current
fs.cpSync(path.join(stagedDir, dirName), destSubDir, { recursive: true });
}
}
// Removal: discriminator depends on prefix shape.
// Non-empty prefix: GSD namespace IS the prefix; remove prefix-matching dirs not in staged set.
// Empty prefix (Hermes): GSD-owned = stem in manifest (i.e. canonically-shipped GSD skill).
// User-owned skills not in manifest are preserved.
// No manifest available: be conservative, don't remove anything.
const canonicalStems = manifest
? new Set([...manifest.keys()].filter(k => !k.startsWith('_calls_agents_')))
: null;
const destEntries = fs.readdirSync(destDir);
for (const entry of destEntries) {
const entryPath = path.join(destDir, entry);
if (!fs.statSync(entryPath).isDirectory()) continue;
let isGsdOwned;
if (kindPrefix !== '') {
isGsdOwned = entry.startsWith(kindPrefix);
} else if (canonicalStems) {
// Hermes: empty prefix, destSubpath is the namespace.
// GSD-owned iff the directory name (stem) appears in the canonical manifest.
isGsdOwned = canonicalStems.has(entry);
} else {
// No manifest available: be conservative, don't remove anything.
continue;
}
if (!isGsdOwned) continue; // preserve user-owned
if (stagedDirs.has(entry)) continue; // current GSD-owned, keep
try { fs.rmSync(entryPath, { recursive: true, force: true }); } catch {}
}
} else {
// commands / agents kind: work with .md files
const stagedFiles = new Set(
fs.readdirSync(stagedDir).filter(f => f.endsWith('.md'))
);
// Copy files from staged to dest (overwrite to keep content current)
for (const file of stagedFiles) {
fs.copyFileSync(path.join(stagedDir, file), path.join(destDir, file));
}
// Remove gsd-only files from dest that aren't in staged set
// For commands dir: all .md files are gsd skills
// For agents dir: only gsd-* files
const destEntries = fs.readdirSync(destDir).filter(f => f.endsWith('.md'));
for (const file of destEntries) {
if (kindName === 'agents' && !file.startsWith('gsd-')) continue;
if (!stagedFiles.has(file)) {
try { fs.unlinkSync(path.join(destDir, file)); } catch {}
}
}
}
}
// ---------------------------------------------------------------------------
// List
// ---------------------------------------------------------------------------
/**
* List the currently enabled and disabled skills with token cost.
*
* Token cost = sum of description lengths ÷ 4 (mirrors audit script).
* Descriptions are read from the install source (findInstallSourceRoot).
*
* @param {string} runtimeConfigDir
* @param {Map<string, string[]>} manifest
* @param {Object} [clusterMap]
* @returns {{ enabled: string[], disabled: string[], tokenCost: number }}
*/
function listSurface(runtimeConfigDir, manifest, clusterMap) {
const resolved = resolveSurface(runtimeConfigDir, manifest, clusterMap);
// All known stems from manifest (exclude _calls_agents_ meta keys)
const allStems = [];
for (const [key] of manifest) {
if (!key.startsWith('_calls_agents_')) allStems.push(key);
}
const enabledSet = resolved.skills instanceof Set ? resolved.skills : new Set(allStems);
const enabled = allStems.filter(s => enabledSet.has(s)).sort();
const disabled = allStems.filter(s => !enabledSet.has(s)).sort();
// Compute token cost by reading descriptions from the install source
const srcCommandsDir = findInstallSourceRoot(runtimeConfigDir);
let tokenCost = 0;
for (const stem of enabled) {
const filePath = path.join(srcCommandsDir, `${stem}.md`);
try {
const content = fs.readFileSync(filePath, 'utf8');
const descMatch = content.match(/^description:\s*(.+)$/m);
if (descMatch) {
tokenCost += Math.ceil(descMatch[1].trim().length / 4);
}
} catch {}
}
return { enabled, disabled, tokenCost };
}
// ---------------------------------------------------------------------------
// Exports
// ---------------------------------------------------------------------------
module.exports = {
readSurface,
writeSurface,
resolveSurface,
applySurface,
listSurface,
// Exported for testing
_syncGsdDir,
};