Gemini Interior Generation API

Function: generate-interior-gemini Base URL: https://bgbavxtjlbvgplozizxu.supabase.co/functions/v1/generate-interior-gemini Auth: Authenticated users (JWT required)

Gemini-backed interior design image generation with four modes.

Modes

Mode	Description	Credits
`text-to-image`	Narrative prompt → new room render	6 (flash) / 15 (pro)
`image-edit`	Existing image + instruction → edited image	6 (flash) / 15 (pro)
`floor-plan-render`	Floor plan image + style → photorealistic perspective render	6 (flash) / 15 (pro)
`floor-plan-text`	Text description → 2D floor plan diagram	6 (flash) / 15 (pro)

Models

Model	Credits	Quality
`gemini-3.1-flash-image-preview`	6	Fast, good quality
`gemini-3-pro-image-preview`	15	4K output, highest quality

Text to Image

POST /functions/v1/generate-interior-gemini
Authorization: Bearer <jwt>
Content-Type: application/json

{
  "mode": "text-to-image",
  "prompt": "Scandinavian living room with natural oak floors, white walls, afternoon light",
  "model": "gemini-3.1-flash-image-preview",
  "aspect_ratio": "16:9",
  "workspace_id": "uuid"
}

Image Edit

POST /functions/v1/generate-interior-gemini
{
  "mode": "image-edit",
  "image_url": "https://...",
  "instruction": "Replace the sofa with a dark green velvet sectional",
  "model": "gemini-3.1-flash-image-preview",
  "workspace_id": "uuid"
}

Supports style-transfer pipeline: provide inspiration_url to extract a design spec and apply it to the room without spatial bleed.

Floor Plan Render

POST /functions/v1/generate-interior-gemini
{
  "mode": "floor-plan-render",
  "floor_plan_url": "https://...",
  "style": "modern minimalist",
  "room_type": "living room",
  "model": "gemini-3-pro-image-preview",
  "workspace_id": "uuid"
}

Produces a photorealistic perspective interior render from a 2D floor plan.

Floor Plan from Text

POST /functions/v1/generate-interior-gemini
{
  "mode": "floor-plan-text",
  "description": "Open plan kitchen and living room, 50sqm, with island counter and dining area for 6",
  "workspace_id": "uuid"
}

Response

{
  "success": true,
  "image_url": "https://bgbavxtjlbvgplozizxu.supabase.co/storage/v1/object/public/generation-images/gemini/uuid.png",
  "model": "gemini-3.1-flash-image-preview",
  "credits_used": 6
}

Errors

Status	Meaning
`400`	Missing mode or required fields
`402`	Insufficient credits
`500`	Gemini API error