import { readFileSync, writeFileSync } from 'fs';
import { dirname, join } from 'path';
import { fileURLToPath } from 'url';

const __dirname = dirname(fileURLToPath(import.meta.url));
const root = join(__dirname, '..');
const snippetPath = join(root, 'scripts/_npc_name_arrays_snippet.sql');
const snippet = readFileSync(snippetPath, 'utf8');
const decl = snippet
  .split('\n')
  .filter((l) => l.includes('text[] :='))
  .join('\n');

const n8 = [
  [1, 'Maren Thistlewood'],
  [2, 'Finn Marlow'],
  [3, 'Asha Kentwell'],
  [4, 'Halric Morrow'],
  [5, 'Wynn Cartwright'],
  [6, 'Orin Aldgate'],
  [7, 'Osbert Waynwood'],
  [8, 'Liora Selwyn'],
];
const n926 = [
  [9, 'npc.brandric_thacker.v1', 'Brandric Thacker'],
  [10, 'npc.conrad_pitwright.v1', 'Conrad Pitwright'],
  [11, 'npc.nessa_bramble.v1', 'Nessa Bramble'],
  [12, 'npc.torin_marshwick.v1', 'Torin Marshwick'],
  [13, 'npc.renulf_broadmere.v1', 'Renulf Broadmere'],
  [14, 'npc.kael_ironwright.v1', 'Kael Ironwright'],
  [15, 'npc.edmund_cinderwell.v1', 'Edmund Cinderwell'],
  [16, 'npc.aelith_northgate.v1', 'Aelith Northgate'],
  [17, 'npc.dorian_hawke.v1', 'Dorian Hawke'],
  [18, 'npc.mariel_starling.v1', 'Mariel Starling'],
  [19, 'npc.milo_ropewalk.v1', 'Milo Ropewalk'],
  [20, 'npc.lissa_harcourt.v1', 'Lissa Harcourt'],
  [21, 'npc.jasper_kindling.v1', 'Jasper Kindling'],
  [22, 'npc.kess_wiley.v1', 'Kess Wiley'],
  [23, 'npc.aldwin_relicton.v1', 'Aldwin Relicton'],
  [24, 'npc.torvik_grimstad.v1', 'Torvik Grimstad'],
  [25, 'npc.morna_fenwick.v1', 'Morna Fenwick'],
  [26, 'npc.morah_ellis.v1', 'Morah Ellis'],
];
const n27108 = [
  [27, 'Sera Whitcomb'],
  [28, 'Bram Ashcombe'],
  [29, 'Nils Copperton'],
  [30, 'Mara Tinwell'],
  [31, 'Agnes Stillwater'],
  [32, 'Rodrick Cantrell'],
  [33, 'Wulfric Strand'],
  [34, 'Jada Boltwright'],
  [35, 'Alaric Motlow'],
  [36, 'Percival Pike'],
  [37, 'Eadric Ashenford'],
  [38, 'Yoric Scarn'],
  [39, 'Rillian Hereward'],
  [40, 'Tove Millerson'],
  [41, 'Gareth Grantham'],
  [42, 'Renulf Sackville'],
  [43, 'Bernard Lukin'],
  [44, 'Aldwin Grimston'],
  [45, 'Edmund Edgerton'],
  [46, 'Crispin Aylesford'],
  [47, 'Brunhild Flint'],
  [48, 'Oren Starward'],
  [49, 'Simon Spirewell'],
  [50, 'Hugh Comstock'],
  [51, 'Yves Portier'],
  [52, 'Cedric Brinewell'],
  [53, 'Osmund Salter'],
  [54, 'Rhys Reedman'],
  [55, 'Godfrey Middleton'],
  [56, 'Wystan Postlethwaite'],
  [57, 'Ivo Ironside'],
  [58, 'Roland Rivett'],
  [59, 'Lucan Forrest'],
  [60, 'Alaric Boghurst'],
  [61, 'Norbert Fenwick'],
  [62, 'Miles Myreham'],
  [63, 'Cuthbert Reed'],
  [64, 'Wendel Marsham'],
  [65, 'Sigurd Dunstan'],
  [66, 'Silas Siltwell'],
  [67, 'Peter Sanderson'],
  [68, 'Griselda Holt'],
  [69, 'Bartholomew Howe'],
  [70, 'Baldwin Bonewright'],
  [71, 'Cole Aldridge'],
  [72, 'Shadrach Morrow'],
  [73, 'Rowan Mistwell'],
  [74, 'Fergus Fogarty'],
  [75, 'Dewi Tarrant'],
  [76, 'Vespasian Vale'],
  [77, 'Hugo Holloway'],
  [78, 'Meredith Stowe'],
  [79, 'Roderick Rotherham'],
  [80, 'Beatrice Boghurst'],
  [81, 'Ashford Hale'],
  [82, 'Cyril Cinders'],
  [83, 'Emrys Emberly'],
  [84, 'Alicia Ashford'],
  [85, 'Thorne Hawthorn'],
  [86, 'Brian Briarton'],
  [87, 'Rowan Rootwell'],
  [88, 'Leofric Leaford'],
  [89, 'Galfrid Gales'],
  [90, 'Wynstan Windham'],
  [91, 'Gustav Merseburg'],
  [92, 'Blaise Brissot'],
  [93, 'Archibald Frostwick'],
  [94, 'Rhys Rimer'],
  [95, 'Horace Hoarwell'],
  [96, 'Isolde Ismay'],
  [97, 'Solomon Sunderland'],
  [98, 'Clifford Cliffeton'],
  [99, 'Craig Cragwell'],
  [100, 'Dustin Harwell'],
  [101, 'Marshall Fordham'],
  [102, 'Rivers Trent'],
  [103, 'Bridges Ballard'],
  [104, 'Sterling Brook'],
  [105, 'Sevrin Veilcourt'],
  [106, 'Sterling Starwell'],
  [107, 'Neville Nevett'],
  [108, 'Vera Veilhart'],
];

function esc(s) {
  return s.replace(/'/g, "''");
}

function caseWhen(pairs, col) {
  return pairs.map(([id, v]) => `      WHEN ${id} THEN '${esc(v)}'`).join('\n');
}

function caseWhen926() {
  const k = n926.map(([id, key]) => `      WHEN ${id} THEN '${esc(key)}'`).join('\n');
  const n = n926.map(([id, , name]) => `      WHEN ${id} THEN '${esc(name)}'`).join('\n');
  return { k, n };
}

const c926 = caseWhen926();

const sql = `-- Medieval-style personal names for NPCs; generic elders/medics/stalls use per-id keys and pools (frontend/npcGeneratedNames.ts).

DO $$
DECLARE
${decl}
BEGIN
  UPDATE public.npcs SET
    name_key = 'npc.elder.byid.' || id::text || '.v1',
    name = elder_names[1 + ((id * 3) % 20)]
  WHERE name_key = 'npc.town_speaker_generic.v1';

  UPDATE public.npcs SET
    name_key = 'npc.medic.byid.' || id::text || '.v1',
    name = medic_names[1 + ((id * 7) % 40)]
  WHERE name_key = 'npc.roadside_medic_generic.v1';

  UPDATE public.npcs SET
    name_key = 'npc.stall.byid.' || id::text || '.v1',
    name = stall_names[1 + ((id * 13) % 112)]
  WHERE name_key = 'npc.stall_vendor_generic.v1';
END $$;

UPDATE public.npcs SET name = v.n
FROM (VALUES
  ('npc.capital.merchant_clerk.v1', 'Hugh Pennington'),
  ('npc.capital.armorer.v1', 'Raoul d''Aubigny'),
  ('npc.capital.smith.v1', 'Gilles Ferron'),
  ('npc.capital.jeweler.v1', 'Ysabel Tremaine'),
  ('npc.capital.bounty_agent_a.v1', 'Roderick Vaughn'),
  ('npc.capital.bounty_agent_b.v1', 'Matteo Fabbri'),
  ('npc.capital.elder.v1', 'Anselm Corwyn'),
  ('npc.capital.healer.v1', 'Clothilde Mercier'),
  ('npc.capital.second_armorer.v1', 'Bertrand Hale'),
  ('npc.capital.second_jeweler.v1', 'Eleonore Rivard')
) AS v(k, n)
WHERE public.npcs.name_key = v.k;

UPDATE public.npcs SET name = CASE id
${caseWhen(n8, 'name')}
    END
WHERE id BETWEEN 1 AND 8;

UPDATE public.npcs SET
  name_key = CASE id
${c926.k}
    END,
  name = CASE id
${c926.n}
    END
WHERE id BETWEEN 9 AND 27;

`;

// Fix: WHERE id BETWEEN 9 AND 26 not 27
const sqlFixed = sql.replace('WHERE id BETWEEN 9 AND 27', 'WHERE id BETWEEN 9 AND 26');

const part27 = `UPDATE public.npcs SET name = CASE id
${caseWhen(n27108, 'name')}
    END
WHERE id BETWEEN 27 AND 108;
`;

const out = sqlFixed + '\n' + part27;
writeFileSync(join(root, 'backend/migrations/000034_npc_medieval_names.sql'), out);
console.log('Wrote 000034_npc_medieval_names.sql');