-- Упрощённый UPSERT для сохранения claim с известным claim_id
-- Используется в n8n workflow: form_get (нода claimsave)
-- Дата: 2025-11-21
-- Описание: Простой INSERT/UPDATE для claim, т.к. claim_id уже известен

-- Входные параметры:
-- $1: payload_partial_json (jsonb) - данные формы с wizard_answers, wizard_plan, documents_meta
-- $2: claim_id (text) - UUID заявки

WITH partial AS (
  SELECT 
    $1::jsonb AS p, 
    $2::text AS claim_id_str
),

-- Парсим wizard_answers
wizard_answers_parsed AS (
  SELECT 
    CASE 
      WHEN partial.p->>'wizard_answers' IS NOT NULL 
        THEN (partial.p->>'wizard_answers')::jsonb
      WHEN partial.p->'wizard_answers' IS NOT NULL 
        AND jsonb_typeof(partial.p->'wizard_answers') = 'object'
        THEN partial.p->'wizard_answers'
      ELSE '{}'::jsonb
    END AS answers
  FROM partial
),

-- Парсим wizard_plan
wizard_plan_parsed AS (
  SELECT 
    CASE 
      WHEN partial.p->>'wizard_plan' IS NOT NULL 
        THEN (partial.p->>'wizard_plan')::jsonb
      WHEN partial.p->'wizard_plan' IS NOT NULL 
        AND jsonb_typeof(partial.p->'wizard_plan') = 'object'
        THEN partial.p->'wizard_plan'
      ELSE NULL
    END AS wizard_plan
  FROM partial
),

-- UPSERT claim
claim_upsert AS (
  INSERT INTO clpr_claims (
    id,
    session_token,
    unified_id,
    contact_id,
    phone,
    channel,
    type_code,
    status_code,
    payload,
    created_at,
    updated_at,
    expires_at
  )
  SELECT 
    partial.claim_id_str::uuid,
    COALESCE(partial.p->>'session_id', 'sess-unknown'),
    partial.p->>'unified_id',
    partial.p->>'contact_id',
    partial.p->>'phone',
    'web_form',
    COALESCE(partial.p->>'type_code', 'consumer'),
    CASE
      WHEN (SELECT answers->>'docs_exist' FROM wizard_answers_parsed) = 'true'
        THEN 'in_work'
      ELSE 'draft'
    END,
    jsonb_build_object(
      'claim_id', partial.claim_id_str,
      'answers', (SELECT answers FROM wizard_answers_parsed),
      'documents_meta', COALESCE(partial.p->'documents_meta', '[]'::jsonb),
      'wizard_plan', (SELECT wizard_plan FROM wizard_plan_parsed)
    ),
    COALESCE(
      (SELECT created_at FROM clpr_claims WHERE id = partial.claim_id_str::uuid),
      now()
    ),
    now(),
    now() + interval '14 days'
  FROM partial
  ON CONFLICT (id) DO UPDATE SET
    session_token = EXCLUDED.session_token,
    unified_id = COALESCE(EXCLUDED.unified_id, clpr_claims.unified_id),
    contact_id = COALESCE(EXCLUDED.contact_id, clpr_claims.contact_id),
    phone = COALESCE(EXCLUDED.phone, clpr_claims.phone),
    status_code = EXCLUDED.status_code,
    payload = (
      -- Сохраняем старые поля, которых нет в новом payload
      clpr_claims.payload 
      - 'answers' 
      - 'documents_meta' 
      - 'wizard_plan' 
      - 'claim_id'
    ) || EXCLUDED.payload,
    updated_at = now(),
    expires_at = now() + interval '14 days'
  RETURNING id, status_code, payload, unified_id, contact_id, phone, session_token
),

-- UPSERT documents (если есть)
docs_upsert AS (
  INSERT INTO clpr_claim_documents (
    claim_id, 
    field_name, 
    file_id, 
    uploaded_at, 
    file_name, 
    original_file_name
  )
  SELECT
    partial.claim_id_str AS claim_id,
    doc.field_name,
    doc.file_id,
    COALESCE((doc.uploaded_at)::timestamptz, now()),
    doc.file_name,
    doc.original_file_name
  FROM partial
  CROSS JOIN LATERAL jsonb_to_recordset(
    COALESCE(partial.p->'documents_meta', '[]'::jsonb)
  ) AS doc(
    field_name text, 
    file_id text, 
    file_name text, 
    original_file_name text, 
    uploaded_at text
  )
  WHERE partial.p->'documents_meta' IS NOT NULL
    AND jsonb_array_length(partial.p->'documents_meta') > 0
  ON CONFLICT (claim_id, field_name) DO UPDATE SET
    file_id = EXCLUDED.file_id,
    uploaded_at = EXCLUDED.uploaded_at,
    file_name = EXCLUDED.file_name,
    original_file_name = EXCLUDED.original_file_name
  RETURNING id, claim_id, field_name, file_id, file_name, original_file_name
)

-- Возвращаем результат
SELECT
  (SELECT jsonb_build_object(
    'claim_id', cu.id::text,
    'claim_id_str', (cu.payload->>'claim_id'),
    'status_code', cu.status_code,
    'unified_id', cu.unified_id,
    'contact_id', cu.contact_id,
    'phone', cu.phone,
    'session_token', cu.session_token,
    'payload', cu.payload
  ) FROM claim_upsert cu) AS claim,
  
  (SELECT jsonb_agg(jsonb_build_object(
    'id', id, 
    'field_name', field_name, 
    'file_id', file_id,
    'file_name', file_name,
    'original_file_name', original_file_name
  )) FROM docs_upsert) AS documents;

/*
ПРИМЕРЫ ИСПОЛЬЗОВАНИЯ:

1. Вызов с wizard_answers и wizard_plan:

SELECT * FROM ... WHERE ... = (
  '{
    "session_id": "sess_xxx",
    "unified_id": "usr_xxx",
    "contact_id": "12345",
    "phone": "79262306381",
    "wizard_answers": "{\\"q1\\": \\"answer1\\"}",
    "wizard_plan": "{\\"questions\\": [...]}",
    "documents_meta": [
      {
        "field_name": "uploads[0][0]",
        "file_id": "clientright/0/file.pdf",
        "file_name": "file.pdf",
        "original_file_name": "original.pdf",
        "uploaded_at": "2025-11-21T12:00:00Z"
      }
    ]
  }'::jsonb,
  'uuid-here'::text
);

2. Вызов БЕЗ файлов (только answers):

SELECT * FROM ... WHERE ... = (
  '{
    "session_id": "sess_xxx",
    "unified_id": "usr_xxx",
    "contact_id": "12345",
    "phone": "79262306381",
    "wizard_answers": "{\\"q1\\": \\"answer1\\"}",
    "wizard_plan": null,
    "documents_meta": []
  }'::jsonb,
  'uuid-here'::text
);

РЕЗУЛЬТАТ:
{
  "claim": {
    "claim_id": "uuid",
    "claim_id_str": "uuid",
    "status_code": "draft" or "in_work",
    "unified_id": "usr_xxx",
    "contact_id": "12345",
    "phone": "79262306381",
    "session_token": "sess_xxx",
    "payload": {...}
  },
  "documents": [
    {
      "id": "uuid",
      "field_name": "uploads[0][0]",
      "file_id": "clientright/0/file.pdf",
      "file_name": "file.pdf",
      "original_file_name": "original.pdf"
    }
  ]
}
*/