import { Sequelize, DataTypes } from 'sequelize';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';

const __dirname = dirname(fileURLToPath(import.meta.url));

export const sequelize = new Sequelize({
  dialect: 'sqlite',
  storage: join(__dirname, '../data/jobs.sqlite'),
  logging: false,
});

export const Job = sequelize.define('Job', {
  id: {
    type: DataTypes.UUID,
    defaultValue: DataTypes.UUIDV4,
    primaryKey: true,
  },
  prompt: {
    type: DataTypes.TEXT,
    allowNull: false,
  },
  // Base64 data URL stored for replay; in production use object storage
  imageDataUrl: {
    type: DataTypes.TEXT,
    allowNull: false,
  },
  imageMimeType: {
    type: DataTypes.STRING(64),
    allowNull: false,
    defaultValue: 'image/jpeg',
  },
  status: {
    // queued | running | done | error
    type: DataTypes.STRING(16),
    allowNull: false,
    defaultValue: 'queued',
  },
  result: {
    type: DataTypes.TEXT,
    allowNull: true,
  },
  errorMessage: {
    type: DataTypes.TEXT,
    allowNull: true,
  },
  model: {
    type: DataTypes.STRING(128),
    allowNull: false,
    defaultValue: 'qwen3.5:397b-cloud',
  },
  inputTokens:  { type: DataTypes.INTEGER, allowNull: true },
  outputTokens: { type: DataTypes.INTEGER, allowNull: true },

  // ---- Bounding-box detection fields (Pass 1) ----
  detectedSubject: {
    type: DataTypes.STRING(256),
    allowNull: true,
    comment: 'Short description of what the LLM identified as the subject',
  },
  bboxX:      { type: DataTypes.FLOAT, allowNull: true },
  bboxY:      { type: DataTypes.FLOAT, allowNull: true },
  bboxWidth:  { type: DataTypes.FLOAT, allowNull: true },
  bboxHeight: { type: DataTypes.FLOAT, allowNull: true },

  // Cropped image data URL (stored for UI preview / debugging)
  croppedImageDataUrl: {
    type: DataTypes.TEXT,
    allowNull: true,
  },
}, {
  tableName: 'jobs',
  timestamps: true,
});

export async function initDb() {
  const { mkdirSync } = await import('fs');
  mkdirSync(join(__dirname, '../data'), { recursive: true });
  // alter: true adds new columns to an existing table without dropping data
  await sequelize.sync({ alter: true });
}