import mongoose from 'mongoose';

const eventSchema = new mongoose.Schema({
  // Multi-tenant support
  tenantId: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'Tenant',
    required: true,
    index: true
  },
    id: {
        type: String,
        required: true,
        unique: true,
        index: true
    },
    type: {
        type: String,
        required: true,
        index: true
    },
    accountId: {
        type: String,
        required: true,
        index: true
    },
    userId: {
        type: String,
        index: true
    },
    sessionId: {
        type: String,
        index: true
    },
    action: {
        type: String,
        required: true,
        index: true
    },
    target: String,
    value: Number,
    metadata: {
        type: Map,
        of: mongoose.Schema.Types.Mixed
    },
    properties: {
        type: Map,
        of: mongoose.Schema.Types.Mixed
    },
    timestamp: {
        type: Date,
        required: true,
        index: true
    }
}, {
    timestamps: true,
    timeseries: {
        timeField: 'timestamp',
        metaField: 'metadata',
        granularity: 'seconds'
    }
});

// Compound indexes for common queries
eventSchema.index({ accountId: 1, timestamp: -1 });
eventSchema.index({ accountId: 1, type: 1, timestamp: -1 });
eventSchema.index({ accountId: 1, userId: 1, timestamp: -1 });
eventSchema.index({ type: 1, action: 1, timestamp: -1 });

// TTL index to auto-delete old events after 1 year
eventSchema.index({ timestamp: 1 }, { expireAfterSeconds: 31536000 });

// Multi-tenant indexes
eventSchema.index({ tenantId: 1,  accountId: 1, timestamp: -1  });
eventSchema.index({ tenantId: 1,  accountId: 1, type: 1, timestamp: -1  });
eventSchema.index({ tenantId: 1,  accountId: 1, userId: 1, timestamp: -1  });
eventSchema.index({ tenantId: 1,  type: 1, action: 1, timestamp: -1  });
eventSchema.index({ tenantId: 1,  timestamp: 1  }, { expireAfterSeconds: 31536000 });

export const Event = mongoose.model('Event', eventSchema);