Initial Nuxt data explorer setup

.gitignore

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+# Dependencies
+node_modules/
+
+# Build outputs
+.nuxt/
+.output/
+dist/
+
+# Logs and caches
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+.npm-cache/
+.cache/
+
+# Env files
+.env
+nuxt4-app/.env
+
+# IDE
+.vscode/
+.idea/

nuxt4-app/.gitignore

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+# Nuxt dev/build outputs
+.output
+.data
+.nuxt
+.nitro
+.cache
+dist
+
+# Node dependencies
+node_modules
+
+# Logs
+logs
+*.log
+
+# Misc
+.DS_Store
+.fleet
+.idea
+
+# Local env files
+.env
+.env.*
+!.env.example

nuxt4-app/README.md

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+# Nuxt Minimal Starter
+
+Look at the [Nuxt documentation](https://nuxt.com/docs/getting-started/introduction) to learn more.
+
+## Setup
+
+Make sure to install dependencies:
+
+```bash
+# npm
+npm install
+
+# pnpm
+pnpm install
+
+# yarn
+yarn install
+
+# bun
+bun install
+```
+
+## Development Server
+
+Start the development server on `http://localhost:3000`:
+
+```bash
+# npm
+npm run dev
+
+# pnpm
+pnpm dev
+
+# yarn
+yarn dev
+
+# bun
+bun run dev
+```
+
+## Production
+
+Build the application for production:
+
+```bash
+# npm
+npm run build
+
+# pnpm
+pnpm build
+
+# yarn
+yarn build
+
+# bun
+bun run build
+```
+
+Locally preview production build:
+
+```bash
+# npm
+npm run preview
+
+# pnpm
+pnpm preview
+
+# yarn
+yarn preview
+
+# bun
+bun run preview
+```
+
+Check out the [deployment documentation](https://nuxt.com/docs/getting-started/deployment) for more information.

nuxt4-app/app/app.vue

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+<template>
+  <div class="min-h-screen bg-slate-950 text-slate-100">
+    <NuxtRouteAnnouncer />
+    <NuxtPage />
+  </div>
+</template>

nuxt4-app/nuxt.config.ts

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+// https://nuxt.com/docs/api/configuration/nuxt-config
+export default defineNuxtConfig({
+  ssr: false,
+  compatibilityDate: '2025-07-15',
+  devtools: { enabled: true },
+  modules: ['@nuxt/image', '@nuxt/ui', '@nuxt/test-utils'],
+  runtimeConfig: {
+    supabase: {
+      url: process.env.SUPABASE_URL || process.env.NEXT_PUBLIC_SUPABASE_URL,
+      serviceRoleKey:
+        process.env.SUPABASE_SERVICE_ROLE_KEY || process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY
+    }
+  }
+})

nuxt4-app/package.json

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+{
+  "name": "nuxt-app",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "build": "nuxt build",
+    "dev": "nuxt dev",
+    "generate": "nuxt generate",
+    "preview": "nuxt preview",
+    "postinstall": "nuxt prepare"
+  },
+  "dependencies": {
+    "@nuxt/image": "^1.11.0",
+    "@nuxt/test-utils": "^3.19.2",
+    "@nuxt/ui": "^4.0.0",
+    "@supabase/supabase-js": "^2.48.0",
+    "nuxt": "^4.1.2",
+    "typescript": "^5.9.2",
+    "vue": "^3.5.22",
+    "vue-router": "^4.5.1"
+  }
+}

nuxt4-app/pages/index.vue

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+<template>
+  <div class="mx-auto flex max-w-6xl flex-col gap-6 px-4 py-10">
+    <UCard>
+      <template #header>
+        <div class="flex flex-col gap-2">
+          <h1 class="text-2xl font-semibold">Visor de datos</h1>
+          <p class="text-sm text-slate-300">
+            Selecciona una tabla e introduce filtros para consultar los datos en modo solo lectura.
+          </p>
+        </div>
+      </template>
+
+      <div class="grid gap-4 lg:grid-cols-4">
+        <UFormGroup label="Tabla" name="table">
+          <USelectMenu
+            v-model="filters.table"
+            :options="tableOptions"
+            value-attribute="value"
+            option-attribute="label"
+            placeholder="Selecciona una tabla"
+          />
+        </UFormGroup>
+
+        <UFormGroup label="ID" name="id">
+          <UInput v-model="filters.id" placeholder="Filtrar por ID" />
+        </UFormGroup>
+
+        <UFormGroup label="Fecha desde" name="from">
+          <UInput v-model="filters.from" type="date" />
+        </UFormGroup>
+
+        <UFormGroup label="Fecha hasta" name="to">
+          <UInput v-model="filters.to" type="date" />
+        </UFormGroup>
+      </div>
+
+      <template #footer>
+        <div class="flex flex-wrap items-center justify-between gap-3">
+          <div class="text-xs text-slate-400">
+            Para filtros avanzados puedes codificar un objeto JSON en base64 e invocarlo mediante la ruta
+            <code class="rounded bg-slate-800 px-2 py-1">/api/data/{{ filters.table }}/[query]</code>.
+          </div>
+          <div class="flex gap-2">
+            <UButton color="gray" variant="soft" @click="resetFilters" :disabled="loading">
+              Limpiar filtros
+            </UButton>
+            <UButton @click="refresh" :loading="loading" :disabled="!filters.table">
+              Consultar datos
+            </UButton>
+          </div>
+        </div>
+      </template>
+    </UCard>
+
+    <div v-if="errorMessage" class="rounded-lg border border-red-500 bg-red-500/10 p-4 text-sm text-red-200">
+      {{ errorMessage }}
+    </div>
+
+    <div v-if="activeMetadata" class="grid gap-4 lg:grid-cols-2">
+      <UCard>
+        <template #header>
+          <div class="flex items-center justify-between">
+            <h2 class="text-lg font-semibold">Resumen de {{ activeMetadata.table }}</h2>
+            <UBadge color="primary">{{ activeMetadata.rowCount }} registros</UBadge>
+          </div>
+        </template>
+        <dl class="grid grid-cols-2 gap-2 text-sm">
+          <div>
+            <dt class="text-slate-400">Clave primaria</dt>
+            <dd class="font-medium">{{ activeMetadata.primaryKey }}</dd>
+          </div>
+          <div>
+            <dt class="text-slate-400">Última consulta</dt>
+            <dd class="font-medium">{{ formatDate(activeMetadata.lastRefreshed) }}</dd>
+          </div>
+          <div>
+            <dt class="text-slate-400">Tamaño aprox.</dt>
+            <dd class="font-medium">{{ formatSize(activeMetadata.approxSizeBytes) }}</dd>
+          </div>
+          <div>
+            <dt class="text-slate-400">Rango de creación</dt>
+            <dd class="font-medium">
+              {{ formatDate(activeMetadata.createdAtRange?.from) }}
+              —
+              {{ formatDate(activeMetadata.createdAtRange?.to) }}
+            </dd>
+          </div>
+        </dl>
+
+        <template #footer>
+          <div class="text-xs text-slate-400">
+            Columnas detectadas: {{ activeMetadata.columns.join(', ') }}
+          </div>
+        </template>
+      </UCard>
+
+      <UCard v-if="activeMetadata.sampleRow">
+        <template #header>
+          <h2 class="text-lg font-semibold">Registro de ejemplo</h2>
+        </template>
+        <pre class="overflow-auto rounded bg-slate-900 p-4 text-sm">{{ formatSample(activeMetadata.sampleRow) }}</pre>
+      </UCard>
+    </div>
+
+    <UCard>
+      <template #header>
+        <div class="flex items-center justify-between gap-2">
+          <h2 class="text-lg font-semibold">Datos</h2>
+          <UBadge v-if="tableData" color="gray">
+            {{ tableData.length }} registros visibles
+          </UBadge>
+        </div>
+      </template>
+
+      <div v-if="loading" class="flex items-center justify-center py-10">
+        <ULoadingIndicator size="lg" />
+      </div>
+      <div v-else-if="tableData.length === 0" class="py-10 text-center text-sm text-slate-400">
+        No hay datos que coincidan con los filtros actuales.
+      </div>
+      <div v-else class="overflow-auto">
+        <table class="min-w-full divide-y divide-slate-800 text-sm">
+          <thead class="bg-slate-900/60">
+            <tr>
+              <th v-for="column in visibleColumns" :key="column" class="px-4 py-2 text-left font-semibold">
+                {{ column }}
+              </th>
+            </tr>
+          </thead>
+          <tbody class="divide-y divide-slate-800">
+            <tr v-for="(row, index) in tableData" :key="index" class="hover:bg-slate-900/40">
+              <td v-for="column in visibleColumns" :key="column" class="px-4 py-2">
+                {{ formatCell(row[column]) }}
+              </td>
+            </tr>
+          </tbody>
+        </table>
+      </div>
+    </UCard>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed, onMounted, reactive, ref, watch } from 'vue'
+
+const loading = ref(false)
+const errorMessage = ref<string | null>(null)
+const tableData = ref<Record<string, unknown>[]>([])
+const activeMetadata = ref<any | null>(null)
+const availableMetadata = ref<any[]>([])
+
+const filters = reactive({
+  table: '',
+  id: '',
+  from: '',
+  to: ''
+})
+
+const tableOptions = computed(() =>
+  availableMetadata.value.map((meta) => ({
+    label: `${meta.table} (${meta.rowCount})`,
+    value: meta.table
+  }))
+)
+
+const visibleColumns = computed(() => (tableData.value[0] ? Object.keys(tableData.value[0]) : []))
+
+onMounted(async () => {
+  await loadAvailableMetadata()
+})
+
+watch(
+  () => filters.table,
+  async (value) => {
+    if (!value) {
+      tableData.value = []
+      activeMetadata.value = null
+      return
+    }
+
+    await refresh()
+  }
+)
+
+async function loadAvailableMetadata() {
+  try {
+    const metadata = await $fetch('/api/metadata')
+    availableMetadata.value = Array.isArray(metadata) ? metadata : []
+  } catch (error) {
+    errorMessage.value = extractErrorMessage(error)
+  }
+}
+
+async function refresh() {
+  if (!filters.table) {
+    return
+  }
+
+  loading.value = true
+  errorMessage.value = null
+
+  try {
+    const [metadata, data] = await Promise.all([
+      $fetch(`/api/metadata/${filters.table}`),
+      $fetch(`/api/data/${filters.table}`, {
+        query: buildQueryParams()
+      })
+    ])
+
+    activeMetadata.value = metadata
+    const metadataIndex = availableMetadata.value.findIndex((item) => item.table === metadata.table)
+    if (metadataIndex >= 0) {
+      availableMetadata.value[metadataIndex] = metadata
+    }
+    tableData.value = data?.records ?? []
+  } catch (error) {
+    errorMessage.value = extractErrorMessage(error)
+    tableData.value = []
+  } finally {
+    loading.value = false
+  }
+}
+
+function buildQueryParams() {
+  const params: Record<string, string> = { limit: '100' }
+
+  if (filters.id) {
+    params.id = filters.id.trim()
+  }
+
+  if (filters.from) {
+    params.created_from = filters.from
+  }
+
+  if (filters.to) {
+    params.created_to = filters.to
+  }
+
+  return params
+}
+
+function resetFilters() {
+  filters.id = ''
+  filters.from = ''
+  filters.to = ''
+
+  if (filters.table) {
+    refresh()
+  }
+}
+
+function extractErrorMessage(error: unknown) {
+  if (error && typeof error === 'object' && 'statusMessage' in error) {
+    return String((error as any).statusMessage)
+  }
+
+  if (error instanceof Error) {
+    return error.message
+  }
+
+  return 'Ocurrió un error inesperado al consultar los datos.'
+}
+
+function formatSize(bytes: number | null) {
+  if (!bytes) {
+    return 'No disponible'
+  }
+
+  if (bytes < 1024) {
+    return `${bytes} B`
+  }
+
+  const units = ['KB', 'MB', 'GB']
+  let size = bytes / 1024
+  let unitIndex = 0
+
+  while (size >= 1024 && unitIndex < units.length - 1) {
+    size /= 1024
+    unitIndex += 1
+  }
+
+  return `${size.toFixed(1)} ${units[unitIndex]}`
+}
+
+function formatDate(value: string | null | undefined) {
+  if (!value) {
+    return '—'
+  }
+
+  const date = new Date(value)
+
+  if (Number.isNaN(date.getTime())) {
+    return value
+  }
+
+  return date.toLocaleString()
+}
+
+function formatCell(value: unknown) {
+  if (value === null || value === undefined) {
+    return '—'
+  }
+
+  if (value instanceof Date) {
+    return value.toISOString()
+  }
+
+  if (typeof value === 'object') {
+    try {
+      return JSON.stringify(value)
+    } catch (error) {
+      return '[objeto]'
+    }
+  }
+
+  return String(value)
+}
+
+function formatSample(value: unknown) {
+  try {
+    return JSON.stringify(value, null, 2)
+  } catch (error) {
+    return String(value)
+  }
+}
+</script>

nuxt4-app/public/robots.txt

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+User-Agent: *
+Disallow:

nuxt4-app/server/api/data/[table]/[...segment].get.ts

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+import { parseQuerySegment } from '../../../services/query-parser'
+import { fetchTableData, fetchTableRecord } from '../../../services/table-service'
+
+export default defineEventHandler(async (event) => {
+  const table = event.context.params?.table
+  const segmentParam = event.context.params?.segment
+
+  if (!table || !segmentParam) {
+    throw createError({ statusCode: 400, statusMessage: 'Tabla o parámetro no especificados' })
+  }
+
+  const values = Array.isArray(segmentParam) ? segmentParam : [segmentParam]
+  const target = values[0]
+
+  const parsedQuery = parseQuerySegment(target)
+
+  if (parsedQuery) {
+    return await fetchTableData(table, { parsedQuery })
+  }
+
+  return await fetchTableRecord(table, target)
+})

nuxt4-app/server/api/data/[table]/index.get.ts

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+import { parseQuerySegment } from '../../../services/query-parser'
+import { fetchTableData } from '../../../services/table-service'
+
+export default defineEventHandler(async (event) => {
+  const table = event.context.params?.table
+
+  if (!table) {
+    throw createError({ statusCode: 400, statusMessage: 'Tabla no especificada' })
+  }
+
+  const query = getQuery(event)
+  const limitValue = Number.parseInt((query.limit as string) ?? '', 10)
+  const limit = Number.isFinite(limitValue) ? Math.min(Math.max(limitValue, 1), 500) : undefined
+
+  const parsedQuery = parseQuerySegment(query.query as string | undefined)
+
+  return await fetchTableData(table, {
+    parsedQuery,
+    limit,
+    filters: {
+      id: (query.id as string) || undefined,
+      createdFrom: (query.created_from as string) || undefined,
+      createdTo: (query.created_to as string) || undefined
+    }
+  })
+})

nuxt4-app/server/api/data/index.get.ts

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+import { fetchAllData } from '../../services/table-service'
+
+export default defineEventHandler(async (event) => {
+  const query = getQuery(event)
+  const requestedLimit = Number.parseInt((query.limit as string) ?? '', 10)
+  const limit = Number.isFinite(requestedLimit) ? Math.min(Math.max(requestedLimit, 1), 100) : 25
+
+  return await fetchAllData(limit)
+})

nuxt4-app/server/api/metadata/[table]/[id].get.ts

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+import { fetchTableRecordMetadata } from '../../../services/table-service'
+
+export default defineEventHandler(async (event) => {
+  const table = event.context.params?.table
+  const id = event.context.params?.id
+
+  if (!table || !id) {
+    throw createError({ statusCode: 400, statusMessage: 'Tabla o id no especificados' })
+  }
+
+  return await fetchTableRecordMetadata(table, id)
+})

nuxt4-app/server/api/metadata/[table]/index.get.ts

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+import { parseQuerySegment } from '../../../services/query-parser'
+import { fetchTableMetadata } from '../../../services/table-service'
+
+export default defineEventHandler(async (event) => {
+  const table = event.context.params?.table
+
+  if (!table) {
+    throw createError({ statusCode: 400, statusMessage: 'Tabla no especificada' })
+  }
+
+  const query = getQuery(event)
+  const parsedQuery = parseQuerySegment(query.query as string | undefined)
+
+  return await fetchTableMetadata(table, { parsedQuery })
+})

nuxt4-app/server/api/metadata/index.get.ts

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+import { fetchAllTablesMetadata } from '../../services/table-service'
+
+export default defineEventHandler(async () => {
+  return await fetchAllTablesMetadata()
+})

nuxt4-app/server/data-sources/anticipos/config.ts

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+import type { TableConfig } from '../types'
+
+export const anticiposConfig: TableConfig = {
+  table: 'anticipos',
+  primaryKey: 'id'
+}

nuxt4-app/server/data-sources/asistencias/config.ts

@@ -0,0 +1,6 @@
+import type { TableConfig } from '../types'
+
+export const asistenciasConfig: TableConfig = {
+  table: 'asistencias',
+  primaryKey: 'id'
+}

nuxt4-app/server/data-sources/carretas/config.ts

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+import type { TableConfig } from '../types'
+
+export const carretasConfig: TableConfig = {
+  table: 'carretas',
+  primaryKey: 'id'
+}

nuxt4-app/server/data-sources/clientes/config.ts

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+import type { TableConfig } from '../types'
+
+export const clientesConfig: TableConfig = {
+  table: 'clientes',
+  primaryKey: 'id'
+}

nuxt4-app/server/data-sources/comercios/config.ts

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+import type { TableConfig } from '../types'
+
+export const comerciosConfig: TableConfig = {
+  table: 'comercios',
+  primaryKey: 'id'
+}

nuxt4-app/server/data-sources/cupones/config.ts

@@ -0,0 +1,6 @@
+import type { TableConfig } from '../types'
+
+export const cuponesConfig: TableConfig = {
+  table: 'cupones',
+  primaryKey: 'id'
+}

nuxt4-app/server/data-sources/depositos/config.ts

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+import type { TableConfig } from '../types'
+
+export const depositosConfig: TableConfig = {
+  table: 'depositos',
+  primaryKey: 'id'
+}

nuxt4-app/server/data-sources/index.ts

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+import { anticiposConfig } from './anticipos/config'
+import { asistenciasConfig } from './asistencias/config'
+import { carretasConfig } from './carretas/config'
+import { clientesConfig } from './clientes/config'
+import { comerciosConfig } from './comercios/config'
+import { cuponesConfig } from './cupones/config'
+import { depositosConfig } from './depositos/config'
+import { ingresosConfig } from './ingresos/config'
+import { pagosAnticipoConfig } from './pagos_anticipo/config'
+import { rechazosConfig } from './rechazos/config'
+import { tareasRealizadasConfig } from './tareas_realizadas/config'
+import type { TableConfig, TableName } from './types'
+
+export const tableConfigs: Record<TableName, TableConfig> = {
+  anticipos: anticiposConfig,
+  asistencias: asistenciasConfig,
+  carretas: carretasConfig,
+  clientes: clientesConfig,
+  comercios: comerciosConfig,
+  cupones: cuponesConfig,
+  depositos: depositosConfig,
+  ingresos: ingresosConfig,
+  pagos_anticipo: pagosAnticipoConfig,
+  rechazos: rechazosConfig,
+  tareas_realizadas: tareasRealizadasConfig
+}
+
+export const tableNames = Object.keys(tableConfigs) as TableName[]
+
+export function getTableConfig(name: string): TableConfig | undefined {
+  return tableConfigs[name as TableName]
+}

nuxt4-app/server/data-sources/ingresos/config.ts

@@ -0,0 +1,6 @@
+import type { TableConfig } from '../types'
+
+export const ingresosConfig: TableConfig = {
+  table: 'ingresos',
+  primaryKey: 'id'
+}

nuxt4-app/server/data-sources/pagos_anticipo/config.ts

@@ -0,0 +1,6 @@
+import type { TableConfig } from '../types'
+
+export const pagosAnticipoConfig: TableConfig = {
+  table: 'pagos_anticipo',
+  primaryKey: 'id'
+}

nuxt4-app/server/data-sources/rechazos/config.ts

@@ -0,0 +1,6 @@
+import type { TableConfig } from '../types'
+
+export const rechazosConfig: TableConfig = {
+  table: 'rechazos',
+  primaryKey: 'id'
+}

nuxt4-app/server/data-sources/tareas_realizadas/config.ts

@@ -0,0 +1,6 @@
+import type { TableConfig } from '../types'
+
+export const tareasRealizadasConfig: TableConfig = {
+  table: 'tareas_realizadas',
+  primaryKey: 'id'
+}

nuxt4-app/server/data-sources/types.ts

@@ -0,0 +1,36 @@
+export type TableName =
+  | 'anticipos'
+  | 'asistencias'
+  | 'carretas'
+  | 'clientes'
+  | 'comercios'
+  | 'cupones'
+  | 'depositos'
+  | 'ingresos'
+  | 'pagos_anticipo'
+  | 'rechazos'
+  | 'tareas_realizadas'
+
+export type TableTransform = {
+  readonly serializeRow?: (row: Record<string, unknown>) => Record<string, unknown>
+}
+
+export interface TableConfig {
+  readonly table: TableName
+  readonly primaryKey?: string
+  readonly defaultSelect?: string
+  readonly transforms?: TableTransform
+}
+
+export interface QueryFilter {
+  field: string
+  operator?: 'eq' | 'neq' | 'gt' | 'gte' | 'lt' | 'lte' | 'like' | 'ilike'
+  value: string | number | boolean
+}
+
+export interface ParsedQuery {
+  filters: QueryFilter[]
+  limit?: number
+  offset?: number
+  orderBy?: { field: string; ascending?: boolean }
+}

nuxt4-app/server/services/query-parser.ts

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+import type { ParsedQuery, QueryFilter } from '../data-sources/types'
+
+function isValidFilter(filter: Partial<QueryFilter>): filter is QueryFilter {
+  return typeof filter.field === 'string' && filter.field.length > 0 && filter.value !== undefined
+}
+
+function decodeBase64Url(value: string) {
+  const normalized = value.replace(/-/g, '+').replace(/_/g, '/')
+  const paddingNeeded = (4 - (normalized.length % 4)) % 4
+  const padded = normalized + '='.repeat(paddingNeeded)
+  return Buffer.from(padded, 'base64').toString('utf-8')
+}
+
+export function parseQuerySegment(segment?: string | string[]): ParsedQuery | null {
+  if (!segment) {
+    return null
+  }
+
+  const value = Array.isArray(segment) ? segment[0] : segment
+
+  try {
+    const decoded = decodeBase64Url(value)
+    const parsed = JSON.parse(decoded)
+
+    const result: ParsedQuery = {
+      filters: []
+    }
+
+    if (Array.isArray(parsed.filters)) {
+      result.filters = parsed.filters.filter(isValidFilter)
+    }
+
+    if (parsed.limit && Number.isInteger(parsed.limit) && parsed.limit > 0) {
+      result.limit = Math.min(parsed.limit, 500)
+    }
+
+    if (parsed.offset && Number.isInteger(parsed.offset) && parsed.offset >= 0) {
+      result.offset = parsed.offset
+    }
+
+    if (parsed.orderBy && typeof parsed.orderBy.field === 'string') {
+      result.orderBy = {
+        field: parsed.orderBy.field,
+        ascending: parsed.orderBy.ascending !== false
+      }
+    }
+
+    return result
+  } catch (error) {
+    console.warn('Failed to parse query segment', error)
+    return null
+  }
+}

nuxt4-app/server/services/query-runner.ts

@@ -0,0 +1,34 @@
+import type { ParsedQuery } from '../data-sources/types'
+
+type PostgrestOperator = 'eq' | 'neq' | 'gt' | 'gte' | 'lt' | 'lte' | 'like' | 'ilike'
+
+export function applyParsedQuery(builder: any, parsed: ParsedQuery | null) {
+  if (!parsed) {
+    return builder
+  }
+
+  for (const filter of parsed.filters) {
+    const operator: PostgrestOperator = (filter.operator ?? 'eq') as PostgrestOperator
+
+    if (typeof builder[operator] === 'function') {
+      const value = operator === 'like' || operator === 'ilike' ? String(filter.value) : filter.value
+      builder = builder[operator](filter.field, value)
+    }
+  }
+
+  if (parsed.orderBy && typeof builder.order === 'function') {
+    builder = builder.order(parsed.orderBy.field, {
+      ascending: parsed.orderBy.ascending !== false
+    })
+  }
+
+  if (parsed.limit && parsed.offset !== undefined && typeof builder.range === 'function') {
+    const from = parsed.offset
+    const to = parsed.offset + parsed.limit - 1
+    builder = builder.range(from, to)
+  } else if (parsed.limit && typeof builder.limit === 'function') {
+    builder = builder.limit(parsed.limit)
+  }
+
+  return builder
+}

nuxt4-app/server/services/table-service.ts

@@ -0,0 +1,256 @@
+import { getTableConfig, tableNames } from '../data-sources'
+import type { ParsedQuery, TableConfig } from '../data-sources/types'
+import { getSupabaseClient } from '../utils/supabase'
+import { applyParsedQuery } from './query-runner'
+
+type GenericObject = Record<string, unknown>
+
+function isRecord(value: unknown): value is GenericObject {
+  return typeof value === 'object' && value !== null && !Array.isArray(value)
+}
+
+interface MetadataOptions {
+  parsedQuery?: ParsedQuery | null
+}
+
+interface DataFilters {
+  id?: string
+  createdFrom?: string
+  createdTo?: string
+}
+
+interface DataOptions {
+  parsedQuery?: ParsedQuery | null
+  filters?: DataFilters
+  limit?: number
+}
+
+function serializeRow(row: unknown, config: TableConfig): GenericObject | null {
+  if (!isRecord(row) || ('error' in row && (row as any).error === true)) {
+    return null
+  }
+
+  const transform = config.transforms?.serializeRow
+  return transform ? transform(row) : row
+}
+
+export async function fetchAllTablesMetadata() {
+  const results = await Promise.allSettled(
+    tableNames.map((name) => fetchTableMetadata(name))
+  )
+
+  return results
+    .filter((result): result is PromiseFulfilledResult<Awaited<ReturnType<typeof fetchTableMetadata>>> =>
+      result.status === 'fulfilled'
+    )
+    .map((result) => result.value)
+}
+
+export async function fetchTableMetadata(tableName: string, options?: MetadataOptions) {
+  const config = getTableConfig(tableName)
+
+  if (!config) {
+    throw createError({ statusCode: 404, statusMessage: `Tabla ${tableName} no encontrada` })
+  }
+
+  const supabase = getSupabaseClient()
+
+  const baseSelect = config.defaultSelect ?? '*'
+
+  const countPromise = supabase
+    .from(config.table)
+    .select(baseSelect, { head: true, count: 'exact' })
+  const samplePromise = applyParsedQuery(
+    supabase.from(config.table).select(baseSelect),
+    options?.parsedQuery ?? null
+  )
+    .limit(1)
+
+  const earliestPromise = supabase
+    .from(config.table)
+    .select('created_at')
+    .order('created_at', { ascending: true })
+    .limit(1)
+
+  const latestPromise = supabase
+    .from(config.table)
+    .select('created_at')
+    .order('created_at', { ascending: false })
+    .limit(1)
+
+  const [{ count, error: countError }, { data: sampleData, error: sampleError }, earliest, latest] =
+    await Promise.all([countPromise, samplePromise, earliestPromise, latestPromise])
+
+  if (countError) {
+    throw createError({ statusCode: 500, statusMessage: countError.message })
+  }
+
+  if (sampleError) {
+    throw createError({ statusCode: 500, statusMessage: sampleError.message })
+  }
+
+  const sampleSet = Array.isArray(sampleData) ? sampleData : []
+  const sampleRow = serializeRow(sampleSet[0] ?? null, config)
+  const columnNames = sampleRow ? Object.keys(sampleRow) : []
+  const approxRowSize = sampleRow ? JSON.stringify(sampleRow).length : 0
+  const approxSizeBytes = count && approxRowSize ? approxRowSize * count : null
+
+  return {
+    table: config.table,
+    primaryKey: config.primaryKey ?? 'id',
+    rowCount: count ?? 0,
+    approxSizeBytes,
+    columns: columnNames,
+    createdAtRange: {
+      from: earliest.data?.[0]?.created_at ?? null,
+      to: latest.data?.[0]?.created_at ?? null
+    },
+    sampleRow,
+    lastRefreshed: new Date().toISOString()
+  }
+}
+
+export async function fetchTableRecordMetadata(tableName: string, id: string) {
+  const config = getTableConfig(tableName)
+
+  if (!config) {
+    throw createError({ statusCode: 404, statusMessage: `Tabla ${tableName} no encontrada` })
+  }
+
+  const supabase = getSupabaseClient()
+  const primaryKey = config.primaryKey ?? 'id'
+
+  const { data, error } = await supabase
+    .from(config.table)
+    .select(config.defaultSelect ?? '*')
+    .eq(primaryKey, id)
+    .maybeSingle()
+
+  if (error) {
+    throw createError({ statusCode: 500, statusMessage: error.message })
+  }
+
+  if (!data || (typeof data === 'object' && data !== null && 'error' in data)) {
+    if (data && typeof data === 'object' && 'message' in data) {
+      throw createError({ statusCode: 500, statusMessage: String((data as any).message) })
+    }
+    throw createError({ statusCode: 404, statusMessage: `Registro ${id} no encontrado` })
+  }
+
+  return {
+    table: config.table,
+    id,
+    metadata: serializeRow(data, config)
+  }
+}
+
+export async function fetchTableRecord(tableName: string, id: string) {
+  const config = getTableConfig(tableName)
+
+  if (!config) {
+    throw createError({ statusCode: 404, statusMessage: `Tabla ${tableName} no encontrada` })
+  }
+
+  const supabase = getSupabaseClient()
+  const primaryKey = config.primaryKey ?? 'id'
+
+  const { data, error } = await supabase
+    .from(config.table)
+    .select(config.defaultSelect ?? '*')
+    .eq(primaryKey, id)
+    .maybeSingle()
+
+  if (error) {
+    throw createError({ statusCode: 500, statusMessage: error.message })
+  }
+
+  if (!data || (typeof data === 'object' && data !== null && 'error' in data)) {
+    if (data && typeof data === 'object' && 'message' in data) {
+      throw createError({ statusCode: 500, statusMessage: String((data as any).message) })
+    }
+    throw createError({ statusCode: 404, statusMessage: `Registro ${id} no encontrado` })
+  }
+
+  return serializeRow(data, config)
+}
+
+export async function fetchAllData(limitPerTable = 100) {
+  const supabase = getSupabaseClient()
+
+  const tablePromises = tableNames.map(async (name) => {
+    const config = getTableConfig(name)!
+    const { data, error, count } = await supabase
+      .from(config.table)
+      .select(config.defaultSelect ?? '*', { count: 'exact' })
+      .limit(limitPerTable)
+
+    if (error) {
+      throw createError({ statusCode: 500, statusMessage: error.message })
+    }
+
+    const rows = Array.isArray(data) ? data : []
+
+    return {
+      table: config.table,
+      count: count ?? 0,
+      limit: limitPerTable,
+      records: rows
+        .map((row) => serializeRow(row, config))
+        .filter((row): row is GenericObject => row !== null)
+    }
+  })
+
+  return Promise.all(tablePromises)
+}
+
+export async function fetchTableData(tableName: string, options?: DataOptions) {
+  const config = getTableConfig(tableName)
+
+  if (!config) {
+    throw createError({ statusCode: 404, statusMessage: `Tabla ${tableName} no encontrada` })
+  }
+
+  const supabase = getSupabaseClient()
+  const primaryKey = config.primaryKey ?? 'id'
+  const limit = options?.limit ?? 100
+
+  let query = supabase
+    .from(config.table)
+    .select(config.defaultSelect ?? '*', { count: 'exact' })
+
+  query = applyParsedQuery(query as never, options?.parsedQuery ?? null) as never
+
+  if (options?.filters?.id) {
+    query = query.eq(primaryKey, options.filters.id)
+  }
+
+  if (options?.filters?.createdFrom) {
+    query = query.gte('created_at', options.filters.createdFrom)
+  }
+
+  if (options?.filters?.createdTo) {
+    query = query.lte('created_at', options.filters.createdTo)
+  }
+
+  if (!options?.parsedQuery?.limit) {
+    query = query.limit(limit)
+  }
+
+  const { data, error, count } = await query
+
+  if (error) {
+    throw createError({ statusCode: 500, statusMessage: error.message })
+  }
+
+  const rows = Array.isArray(data) ? data : []
+  const records = rows
+    .map((row) => serializeRow(row, config))
+    .filter((row): row is GenericObject => row !== null)
+
+  return {
+    table: config.table,
+    count: count ?? records.length,
+    limit,
+    records
+  }
+}

nuxt4-app/server/utils/supabase.ts

@@ -0,0 +1,28 @@
+import { createClient, type SupabaseClient } from '@supabase/supabase-js'
+
+let cachedClient: SupabaseClient | null = null
+
+export function getSupabaseClient(): SupabaseClient {
+  if (cachedClient) {
+    return cachedClient
+  }
+
+  const {
+    supabase: { url, serviceRoleKey }
+  } = useRuntimeConfig()
+
+  if (!url || !serviceRoleKey) {
+    throw createError({
+      statusCode: 500,
+      statusMessage:
+        'Supabase credentials are missing. Please set SUPABASE_URL and SUPABASE_SERVICE_ROLE_KEY.'
+    })
+  }
+
+  cachedClient = createClient(url, serviceRoleKey, {
+    auth: { persistSession: false },
+    db: { schema: 'public' }
+  })
+
+  return cachedClient
+}

nuxt4-app/tsconfig.json

@@ -0,0 +1,18 @@
+{
+  // https://nuxt.com/docs/guide/concepts/typescript
+  "files": [],
+  "references": [
+    {
+      "path": "./.nuxt/tsconfig.app.json"
+    },
+    {
+      "path": "./.nuxt/tsconfig.server.json"
+    },
+    {
+      "path": "./.nuxt/tsconfig.shared.json"
+    },
+    {
+      "path": "./.nuxt/tsconfig.node.json"
+    }
+  ]
+}

package.json

@@ -0,0 +1,9 @@
+{
+  "name": "analitica-nucleo",
+  "private": true,
+  "version": "0.1.0",
+  "workspaces": ["nuxt4-app"],
+  "scripts": {
+    "dev": "npm run dev --prefix nuxt4-app"
+  }
+}