/**
 * Brandbook per tenant — source of truth for ads, RRSS calendars,
 * LinkedIn B2B and corporate blog strategy.
 * Stored in documents as type=brandbook (one active doc per tenant).
 */

import { brandBrief } from '@/lib/calendar-generate-brand';

export const BRANDBOOK_DOC_TYPE = 'brandbook';
export const BRANDBOOK_DOC_TITLE = 'Brandbook';

export type BrandbookSectionId =
  | 'identidad'
  | 'voz'
  | 'visual'
  | 'audiencia'
  | 'oferta'
  | 'pilares'
  | 'canales'
  | 'ads'
  | 'b2b'
  | 'blog'
  | 'compliance'
  | 'fuentes';

export type Brandbook = {
  version: 1;
  updated_at?: string;
  /** Identity */
  brand_name: string;
  tagline: string;
  mission: string;
  vision: string;
  values: string[];
  vertical: string;
  /** Voice */
  tone: string;
  personality: string[];
  voice_do: string[];
  voice_dont: string[];
  vocabulary_prefer: string[];
  vocabulary_avoid: string[];
  /** Visual */
  colors_primary: string[];
  colors_secondary: string[];
  fonts: string[];
  visual_notes: string;
  logo_usage: string;
  /** Audience */
  icp: string;
  personas: Array<{ name: string; description: string; pains: string }>;
  geo: string;
  languages: string[];
  /** Offer */
  products_services: string[];
  differentiators: string[];
  proof_points: string[];
  pricing_notes: string;
  /** Content pillars */
  pillars_rrss: string[];
  series_recurrentes: string[];
  formats_priority: string[];
  /** Channels */
  channels: {
    instagram: string;
    facebook: string;
    linkedin: string;
    tiktok: string;
    blog: string;
    other: string;
  };
  /** Ads */
  ads_usps: string[];
  ads_objections: string[];
  ads_ctas: string[];
  ads_offers: string[];
  ads_angles: string[];
  /** B2B / LinkedIn */
  linkedin_themes: string[];
  linkedin_formats: string[];
  thought_leadership: string[];
  buyer_roles: string[];
  /** Blog corporativo */
  blog_themes: string[];
  blog_seo_keywords: string[];
  blog_cadence: string;
  /** Compliance */
  claims_forbidden: string[];
  legal_notes: string;
  sector_rules: string;
  /** Uploaded / pasted source material */
  source_excerpts: Array<{
    id: string;
    filename: string;
    excerpt: string;
    added_at: string;
  }>;
  freeform_notes: string;
};

export const BRANDBOOK_SECTIONS: {
  id: BrandbookSectionId;
  label: string;
  hint: string;
}[] = [
  {
    id: 'identidad',
    label: 'Identidad',
    hint: 'Nombre, misión, visión, valores, vertical',
  },
  {
    id: 'voz',
    label: 'Voz y tono',
    hint: 'Cómo habla la marca; do/don’t y léxico',
  },
  {
    id: 'visual',
    label: 'Visual',
    hint: 'Colores, tipografías, logo y notas de arte',
  },
  {
    id: 'audiencia',
    label: 'Audiencia',
    hint: 'ICP, personas, geo e idiomas',
  },
  {
    id: 'oferta',
    label: 'Oferta',
    hint: 'Productos/servicios, diferenciadores, prueba',
  },
  {
    id: 'pilares',
    label: 'Pilares de contenido',
    hint: 'Series RRSS y formatos prioritarios',
  },
  {
    id: 'canales',
    label: 'Canales',
    hint: 'Rol de cada red y blog',
  },
  {
    id: 'ads',
    label: 'Anuncios',
    hint: 'USPs, objeciones, CTAs, ofertas y ángulos',
  },
  {
    id: 'b2b',
    label: 'LinkedIn B2B',
    hint: 'Temas, formatos y thought leadership',
  },
  {
    id: 'blog',
    label: 'Blog corporativo',
    hint: 'Temas, SEO y cadencia',
  },
  {
    id: 'compliance',
    label: 'Compliance',
    hint: 'Claims prohibidos y notas legales',
  },
  {
    id: 'fuentes',
    label: 'Fuentes',
    hint: 'Textos subidos / pegados del brandbook',
  },
];

export function emptyBrandbook(label = ''): Brandbook {
  return {
    version: 1,
    brand_name: label,
    tagline: '',
    mission: '',
    vision: '',
    values: [],
    vertical: '',
    tone: '',
    personality: [],
    voice_do: [],
    voice_dont: [],
    vocabulary_prefer: [],
    vocabulary_avoid: [],
    colors_primary: [],
    colors_secondary: [],
    fonts: [],
    visual_notes: '',
    logo_usage: '',
    icp: '',
    personas: [],
    geo: 'España',
    languages: ['es'],
    products_services: [],
    differentiators: [],
    proof_points: [],
    pricing_notes: '',
    pillars_rrss: [],
    series_recurrentes: [],
    formats_priority: ['Reel', 'Carrusel', 'Stories', 'Post'],
    channels: {
      instagram: '',
      facebook: '',
      linkedin: '',
      tiktok: '',
      blog: '',
      other: '',
    },
    ads_usps: [],
    ads_objections: [],
    ads_ctas: [],
    ads_offers: [],
    ads_angles: [],
    linkedin_themes: [],
    linkedin_formats: ['Carrusel', 'Documento', 'Post texto', 'Video corto'],
    thought_leadership: [],
    buyer_roles: [],
    blog_themes: [],
    blog_seo_keywords: [],
    blog_cadence: '',
    claims_forbidden: [],
    legal_notes: '',
    sector_rules: '',
    source_excerpts: [],
    freeform_notes: '',
  };
}

/** Seed a usable brandbook from hard-coded brand DNA + sensible defaults. */
export function seedBrandbook(slug: string, label: string): Brandbook {
  const brief = brandBrief(slug, label);
  const base = emptyBrandbook(label);
  const seeds: Record<string, Partial<Brandbook>> = {
    bps: {
      vertical: 'Escuela de idiomas',
      tagline: 'Inglés real, cultura pop y certificaciones',
      mission:
        'Ayudar a alumnos a hablar inglés con confianza para trabajo, viajes y exámenes.',
      tone: brief.tone,
      personality: ['cercano', 'divertido', 'riguroso', 'pop'],
      voice_do: [
        'Explicar con ejemplos reales',
        'Usar series FALSE FRIEND / SLANG / MTW',
        'Micro-lecciones accionables',
      ],
      voice_dont: [
        'Listas genéricas de Black Friday',
        'Tono académico seco',
        'Copiar títulos mes a mes',
      ],
      pillars_rrss: brief.pillars,
      series_recurrentes: [
        'FALSE FRIEND',
        'SLANG',
        'Same word different level',
        'MTW',
        'Canción del día',
        'English Through TV',
        'Fix it',
      ],
      products_services: [
        'Cursos generales',
        'Intensivos',
        'Trinity / IELTS / Cambridge',
        'Inglés oposiciones',
        'Madrid / Málaga',
      ],
      ads_usps: [
        'Metodología práctica',
        'Profes nativos / preparados',
        'Certificaciones oficiales',
      ],
      ads_ctas: ['Test de nivel', 'Reservar plaza', 'WhatsApp'],
      ads_objections: [
        'No tengo tiempo',
        'Ya probé y no aprendí',
        'Es caro',
      ],
      linkedin_themes: [
        'Inglés profesional',
        'Employability',
        'Casos de alumnos',
      ],
      blog_themes: [
        'Guías de certificación',
        'Errores comunes',
        'Cómo elegir curso',
      ],
      channels: {
        instagram: 'Alcance + comunidad (Reels + Stories)',
        facebook: 'Comunidad local / padres',
        linkedin: 'B2B ligero / empleabilidad',
        tiktok: 'Opcional micro-lecciones',
        blog: 'SEO certificaciones y objeciones',
        other: '',
      },
    },
    'talento-y-deporte': {
      vertical: brief.vertical,
      tone: brief.tone,
      pillars_rrss: brief.pillars,
      series_recurrentes: [
        'Nuevo alumno',
        'Beca académica',
        'Beca deportiva',
        'Campus USA',
        'Objeciones',
        'English tips',
      ],
      products_services: [
        'Becas deportivas USA',
        'Acompañamiento académico',
        'Campus visits',
      ],
      ads_usps: ['Becas reales', 'Acompañamiento end-to-end', 'Historias de alumnos'],
      ads_ctas: ['Agenda llamada', 'Evalúa tu perfil'],
      linkedin_themes: ['Educación internacional', 'Deporte + estudios'],
      blog_themes: ['Guía becas USA', 'Requisitos TOEFL/SAT', 'Vida en campus'],
    },
    'halal-safety': {
      vertical: brief.vertical,
      tone: brief.tone,
      pillars_rrss: brief.pillars,
      products_services: [
        'Certificación Halal',
        'Consultoría exportación',
        'Formación',
      ],
      ads_usps: ['Autoridad técnica', 'Mercados export', 'Proceso claro'],
      ads_ctas: ['Solicitar info', 'Auditoría'],
      linkedin_themes: [
        'Exportación Halal',
        'Normativa',
        'Casos sector alimentación/cosmética',
      ],
      thought_leadership: [
        'Tendencias mercados musulmanes',
        'Compliance vs marketing Halal',
      ],
      blog_themes: ['Guías de certificación', 'Mercados clave', 'FAQ técnica'],
      buyer_roles: ['Quality', 'Export manager', 'CEO pyme alimentaria'],
    },
    'brava-dermoestetica': {
      vertical: brief.vertical,
      tone: brief.tone,
      pillars_rrss: brief.pillars,
      products_services: ['Peelings', 'Tratamientos facial', 'Rutinas'],
      ads_usps: ['Resultados naturales', 'Equipo médico', 'Protocolos personalizados'],
      ads_ctas: ['Pedir cita', 'Consulta valoración'],
      claims_forbidden: [
        'Promesas milagro sin matiz',
        'Antes/después sin consentimiento',
      ],
      sector_rules: 'Publicidad sanitaria: claims prudentes, sin garantías absolutas.',
    },
    noberplast: {
      vertical: brief.vertical,
      tone: brief.tone,
      pillars_rrss: brief.pillars,
      formats_priority: ['Carrusel', 'Post LinkedIn', 'Documento', 'Reel'],
      linkedin_themes: [
        'Plásticos técnicos',
        'Casos industriales',
        'Innovación materiales',
      ],
      thought_leadership: [
        'Sostenibilidad industrial',
        'Especificaciones técnicas',
      ],
      buyer_roles: ['Ingeniería', 'Compras', 'Producción'],
      blog_themes: ['Fichas técnicas', 'Aplicaciones sectoriales', 'FAQ producto'],
      channels: {
        instagram: 'Marca / producto visual',
        facebook: 'Bajo',
        linkedin: 'Canal principal B2B',
        tiktok: 'No prioritario',
        blog: 'SEO técnico + captación inbound',
        other: '',
      },
    },
    '4ventures-hub': {
      vertical: brief.vertical,
      tone: brief.tone,
      pillars_rrss: brief.pillars,
      linkedin_themes: ['Ops de agencia', 'Growth', 'Casos clientes'],
      thought_leadership: ['Centro de mando', 'Atribución', 'Contenido que vende'],
    },
  };

  const resolvedSlug = slug === 'blue-parrot-school' ? 'bps' : slug;

  const extra = seeds[resolvedSlug] || {
    vertical: brief.vertical,
    tone: brief.tone,
    pillars_rrss: brief.pillars,
    products_services: [],
    freeform_notes: brief.notes,
  };

  return {
    ...base,
    ...extra,
    brand_name: label,
    vertical: extra.vertical || brief.vertical,
    tone: extra.tone || brief.tone,
    pillars_rrss: extra.pillars_rrss?.length ? extra.pillars_rrss : brief.pillars,
    freeform_notes: extra.freeform_notes || brief.notes,
    updated_at: new Date().toISOString(),
  };
}

export function parseBrandbook(raw: unknown): Brandbook | null {
  if (!raw || typeof raw !== 'object') return null;
  const o = raw as Partial<Brandbook>;
  if (o.version !== 1 && !o.brand_name && !o.vertical) {
    // Allow loose objects that look like brandbooks
    if (!('tone' in o) && !('pillars_rrss' in o) && !('mission' in o)) {
      return null;
    }
  }
  const empty = emptyBrandbook(String(o.brand_name || ''));
  return {
    ...empty,
    ...o,
    version: 1,
    values: arr(o.values),
    personality: arr(o.personality),
    voice_do: arr(o.voice_do),
    voice_dont: arr(o.voice_dont),
    vocabulary_prefer: arr(o.vocabulary_prefer),
    vocabulary_avoid: arr(o.vocabulary_avoid),
    colors_primary: arr(o.colors_primary),
    colors_secondary: arr(o.colors_secondary),
    fonts: arr(o.fonts),
    personas: Array.isArray(o.personas) ? o.personas : [],
    languages: arr(o.languages).length ? arr(o.languages) : ['es'],
    products_services: arr(o.products_services),
    differentiators: arr(o.differentiators),
    proof_points: arr(o.proof_points),
    pillars_rrss: arr(o.pillars_rrss),
    series_recurrentes: arr(o.series_recurrentes),
    formats_priority: arr(o.formats_priority),
    channels: { ...empty.channels, ...(o.channels || {}) },
    ads_usps: arr(o.ads_usps),
    ads_objections: arr(o.ads_objections),
    ads_ctas: arr(o.ads_ctas),
    ads_offers: arr(o.ads_offers),
    ads_angles: arr(o.ads_angles),
    linkedin_themes: arr(o.linkedin_themes),
    linkedin_formats: arr(o.linkedin_formats),
    thought_leadership: arr(o.thought_leadership),
    buyer_roles: arr(o.buyer_roles),
    blog_themes: arr(o.blog_themes),
    blog_seo_keywords: arr(o.blog_seo_keywords),
    claims_forbidden: arr(o.claims_forbidden),
    source_excerpts: Array.isArray(o.source_excerpts) ? o.source_excerpts : [],
  };
}

function arr(v: unknown): string[] {
  if (!Array.isArray(v)) return [];
  return v.map((x) => String(x || '').trim()).filter(Boolean);
}

/** Lines / commas → string[] for form fields. */
export function linesToList(text: string): string[] {
  return text
    .split(/\n|,/)
    .map((s) => s.trim())
    .filter(Boolean);
}

export function listToLines(list: string[]): string {
  return (list || []).join('\n');
}

/** Heuristic: fold uploaded plain text into freeform + optional lists. */
export function ingestSourceText(
  book: Brandbook,
  filename: string,
  text: string
): Brandbook {
  const excerpt = text.slice(0, 12000).trim();
  if (!excerpt) return book;
  const id = `src_${Date.now().toString(36)}`;
  const next: Brandbook = {
    ...book,
    source_excerpts: [
      {
        id,
        filename: filename || 'pegado.txt',
        excerpt,
        added_at: new Date().toISOString(),
      },
      ...(book.source_excerpts || []),
    ].slice(0, 20),
    freeform_notes: [book.freeform_notes, `--- ${filename} ---\n${excerpt.slice(0, 4000)}`]
      .filter(Boolean)
      .join('\n\n')
      .slice(0, 50000),
    updated_at: new Date().toISOString(),
  };

  // Light keyword pulls into empty fields
  const lower = excerpt.toLowerCase();
  if (!next.mission && /misi[oó]n/.test(lower)) {
    const m = excerpt.match(/misi[oó]n[:\s]+(.{20,200})/i);
    if (m) next.mission = m[1].trim();
  }
  if (!next.tone && /tono[:\s]+(.{10,120})/i.test(excerpt)) {
    const m = excerpt.match(/tono[:\s]+(.{10,120})/i);
    if (m) next.tone = m[1].trim();
  }
  return next;
}

/** Compact prompt block for strategists / Anthropic. */
export function brandbookToPrompt(book: Brandbook): string {
  const lines = [
    `Marca: ${book.brand_name}`,
    book.tagline && `Tagline: ${book.tagline}`,
    book.vertical && `Vertical: ${book.vertical}`,
    book.mission && `Misión: ${book.mission}`,
    book.tone && `Tono: ${book.tone}`,
    book.personality.length && `Personalidad: ${book.personality.join(', ')}`,
    book.voice_do.length && `Hacer: ${book.voice_do.join('; ')}`,
    book.voice_dont.length && `Evitar: ${book.voice_dont.join('; ')}`,
    book.series_recurrentes.length &&
      `Series RRSS: ${book.series_recurrentes.join(', ')}`,
    book.pillars_rrss.length && `Pilares: ${book.pillars_rrss.join(', ')}`,
    book.products_services.length &&
      `Oferta: ${book.products_services.join(', ')}`,
    book.differentiators.length &&
      `Diferenciadores: ${book.differentiators.join(', ')}`,
    book.icp && `ICP: ${book.icp}`,
    book.ads_usps.length && `USPs ads: ${book.ads_usps.join('; ')}`,
    book.ads_ctas.length && `CTAs: ${book.ads_ctas.join('; ')}`,
    book.ads_objections.length &&
      `Objeciones: ${book.ads_objections.join('; ')}`,
    book.linkedin_themes.length &&
      `LinkedIn: ${book.linkedin_themes.join(', ')}`,
    book.thought_leadership.length &&
      `Thought leadership: ${book.thought_leadership.join(', ')}`,
    book.blog_themes.length && `Blog: ${book.blog_themes.join(', ')}`,
    book.blog_seo_keywords.length &&
      `SEO: ${book.blog_seo_keywords.join(', ')}`,
    book.claims_forbidden.length &&
      `Prohibido: ${book.claims_forbidden.join('; ')}`,
    book.legal_notes && `Legal: ${book.legal_notes}`,
    book.freeform_notes && `Notas: ${book.freeform_notes.slice(0, 1500)}`,
  ].filter(Boolean);
  return lines.join('\n');
}

export function brandbookCompleteness(book: Brandbook): {
  score: number;
  missing: string[];
} {
  const checks: [string, boolean][] = [
    ['Identidad (misión/vertical)', !!(book.mission || book.vertical)],
    ['Voz/tono', !!book.tone],
    ['Audiencia/ICP', !!(book.icp || book.personas.length)],
    ['Oferta', book.products_services.length > 0],
    ['Pilares/series RRSS', !!(book.pillars_rrss.length || book.series_recurrentes.length)],
    ['Ads (USP o CTA)', !!(book.ads_usps.length || book.ads_ctas.length)],
    ['LinkedIn B2B o blog', !!(book.linkedin_themes.length || book.blog_themes.length)],
  ];
  const missing = checks.filter(([, ok]) => !ok).map(([l]) => l);
  const score = Math.round(
    ((checks.length - missing.length) / checks.length) * 100
  );
  return { score, missing };
}