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{ sqlite } from \"https://esm.town/v/stevekrouse/sqlite\";\nimport { tables } from \"../database/schema.ts\";\nimport type { Atom, Link, AtomSpaceQuery } from \"../../shared/types.ts\";\n\nexport class MiniAtomSpace {\n \n async createAtom(atom: Omit): Promise {\n const id = crypto.randomUUID();\n const now = new Date().toISOString();\n \n const fullAtom: Atom = {\n ...atom,\n id,\n created: new Date(now),\n lastAccessed: new Date(now)\n };\n\n await sqlite.execute(\n `INSERT INTO ${tables.ATOMS_TABLE} \n (id, type, name, sti, lti, confidence, strength, created, last_accessed, tags, user_id)\n VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,\n [\n fullAtom.id,\n fullAtom.type,\n fullAtom.name,\n fullAtom.sti,\n fullAtom.lti,\n fullAtom.confidence,\n fullAtom.strength,\n now,\n now,\n JSON.stringify(fullAtom.tags),\n null // user_id for user-specific atoms\n ]\n );\n\n return fullAtom;\n }\n\n async createLink(link: Omit): Promise {\n const id = crypto.randomUUID();\n const now = new Date().toISOString();\n \n const fullLink: Link = {\n ...link,\n id,\n created: new Date(now),\n lastAccessed: new Date(now)\n };\n\n await sqlite.execute(\n `INSERT INTO ${tables.LINKS_TABLE} \n (id, link_type, outgoing, sti, lti, confidence, strength, created, last_accessed, user_id)\n VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,\n [\n fullLink.id,\n fullLink.linkType,\n JSON.stringify(fullLink.outgoing),\n fullLink.sti,\n fullLink.lti,\n fullLink.confidence,\n fullLink.strength,\n now,\n now,\n null\n ]\n );\n\n return fullLink;\n }\n\n async getAtom(id: string): Promise {\n const result = await sqlite.execute(\n `SELECT * FROM ${tables.ATOMS_TABLE} WHERE id = ?`,\n [id]\n );\n\n if (!result || !Array.isArray(result) || result.length === 0) return null;\n\n const row = result[0];\n return this.rowToAtom(row);\n }\n\n async findAtoms(query: AtomSpaceQuery): Promise {\n let sql = `SELECT * FROM ${tables.ATOMS_TABLE} WHERE 1=1`;\n const params: any[] = [];\n\n if (query.type) {\n sql += ` AND type = ?`;\n params.push(query.type);\n }\n\n if (query.minSTI !== undefined) {\n sql += ` AND sti >= ?`;\n params.push(query.minSTI);\n }\n\n if (query.minLTI !== undefined) {\n sql += ` AND lti >= ?`;\n params.push(query.minLTI);\n }\n\n if (query.userId) {\n sql += ` AND user_id = ?`;\n params.push(query.userId);\n }\n\n sql += ` ORDER BY sti DESC, lti DESC`;\n\n if (query.limit) {\n sql += ` LIMIT ?`;\n params.push(query.limit);\n }\n\n const result = await sqlite.execute(sql, params);\n \n // Handle case where result might be empty or not an array\n if (!result || !Array.isArray(result)) {\n return [];\n }\n \n return result.map(row => this.rowToAtom(row));\n }\n\n async updateSTI(atomId: string, newSTI: number): Promise {\n const now = new Date().toISOString();\n await sqlite.execute(\n `UPDATE ${tables.ATOMS_TABLE} SET sti = ?, last_accessed = ? WHERE id = ?`,\n [newSTI, now, atomId]\n );\n }\n\n async updateLTI(atomId: string, newLTI: number): Promise {\n await sqlite.execute(\n `UPDATE ${tables.ATOMS_TABLE} SET lti = ? WHERE id = ?`,\n [newLTI, atomId]\n );\n }\n\n async getHighSTIAtoms(limit: number = 10): Promise {\n return this.findAtoms({ minSTI: 50, limit });\n }\n\n async getHighLTIAtoms(limit: number = 10): Promise {\n return this.findAtoms({ minLTI: 50, limit });\n }\n\n async searchByName(name: string): Promise {\n const result = await sqlite.execute(\n `SELECT * FROM ${tables.ATOMS_TABLE} WHERE name LIKE ? ORDER BY sti DESC`,\n [`%${name}%`]\n );\n \n if (!result || !Array.isArray(result)) {\n return [];\n }\n \n return result.map(row => this.rowToAtom(row));\n }\n\n async getRelatedAtoms(atomId: string): Promise {\n // Find links that include this atom\n const linkResult = await sqlite.execute(\n `SELECT * FROM ${tables.LINKS_TABLE} WHERE outgoing LIKE ?`,\n [`%\"${atomId}\"%`]\n );\n\n if (!linkResult || !Array.isArray(linkResult)) {\n return [];\n }\n\n const relatedIds = new Set();\n \n for (const link of linkResult) {\n try {\n const outgoing = JSON.parse(link.outgoing as string);\n outgoing.forEach((id: string) => {\n if (id !== atomId) relatedIds.add(id);\n });\n } catch (e) {\n // Skip malformed JSON\n continue;\n }\n }\n\n if (relatedIds.size === 0) return [];\n\n const placeholders = Array(relatedIds.size).fill('?').join(',');\n const result = await sqlite.execute(\n `SELECT * FROM ${tables.ATOMS_TABLE} WHERE id IN (${placeholders})`,\n Array.from(relatedIds)\n );\n\n if (!result || !Array.isArray(result)) {\n return [];\n }\n\n return result.map(row => this.rowToAtom(row));\n }\n\n private rowToAtom(row: any): Atom {\n return {\n id: row.id,\n type: row.type,\n name: row.name,\n sti: row.sti,\n lti: row.lti,\n confidence: row.confidence,\n strength: row.strength,\n created: new Date(row.created),\n lastAccessed: new Date(row.last_accessed),\n tags: JSON.parse(row.tags || '[]')\n };\n }\n\n // Decay STI over time (ECAN forgetting)\n async decaySTI(decayRate: number = 0.95): Promise {\n await sqlite.execute(\n `UPDATE ${tables.ATOMS_TABLE} SET sti = CAST(sti * ? AS INTEGER) WHERE sti > 0`,\n [decayRate]\n );\n }\n\n // Spread activation between related atoms\n async spreadActivation(sourceAtomId: string, activationAmount: number = 10): Promise {\n const relatedAtoms = await this.getRelatedAtoms(sourceAtomId);\n const activatedIds: string[] = [];\n\n for (const atom of relatedAtoms) {\n const newSTI = Math.min(100, atom.sti + activationAmount);\n await this.updateSTI(atom.id, newSTI);\n activatedIds.push(atom.id);\n }\n\n return activatedIds;\n }\n}","deleted","label",[168,169,149],"backend","cognitive","permalink","https://www.val.town/x/zone/NanoCog/code/backend/cognitive/atomspace.ts","extension","actionData","errors"]