# Copy this file to .env and fill in your key. .env is git-ignored.
#
# The AI tutor speaks the OpenAI-compatible "chat completions" API, so it works
# with many providers. Set three variables:
#
#   AI_API_KEY   your provider API key
#   AI_BASE_URL  the provider's base URL (usually ends in /v1)
#   AI_MODEL     the model name to use
#
# ---- Provider quick reference -----------------------------------------------
#
# OpenAI
#   AI_BASE_URL=https://api.openai.com/v1
#   AI_MODEL=gpt-4o-mini
#   Get a key: https://platform.openai.com/api-keys
#   Model list: https://platform.openai.com/docs/models
#
# DeepSeek
#   AI_BASE_URL=https://api.deepseek.com/v1
#   AI_MODEL=deepseek-chat
#   Get a key: https://platform.deepseek.com/api_keys
#   Docs/models: https://api-docs.deepseek.com
#
# SiliconFlow
#   AI_BASE_URL=https://api.siliconflow.cn/v1
#   AI_MODEL=deepseek-ai/DeepSeek-V3
#   Get a key: https://cloud.siliconflow.cn/account/ak
#   Model list: https://cloud.siliconflow.cn/models
#
# OpenRouter (single key, hundreds of models)
#   AI_BASE_URL=https://openrouter.ai/api/v1
#   AI_MODEL=deepseek/deepseek-chat
#   Get a key: https://openrouter.ai/keys
#   Model list: https://openrouter.ai/models
#
# Google Gemini (via its OpenAI-compatible endpoint)
#   AI_BASE_URL=https://generativelanguage.googleapis.com/v1beta/openai
#   AI_MODEL=gemini-2.5-flash
#   Get a key: https://aistudio.google.com/apikey
#
# ---- Troubleshooting --------------------------------------------------------
#   401 / 403 Unauthorized  -> AI_API_KEY is wrong or doesn't match AI_BASE_URL
#   404 Not Found           -> AI_BASE_URL is off (most providers need a trailing
#                              /v1), or AI_MODEL doesn't exist for this provider
#   "no such model"         -> check the provider's model list (links above) for
#                              the exact model string, they are case-sensitive
#   decode errors           -> AI_BASE_URL points somewhere that isn't an
#                              OpenAI-compatible chat endpoint
# The app prints the active "model via host" on startup so you can confirm it.
# -----------------------------------------------------------------------------

AI_API_KEY=your-api-key-here
AI_BASE_URL=https://api.openai.com/v1
AI_MODEL=gpt-4o-mini

# Shortcut: if you set only GOOGLE (a Gemini key) and leave the AI_* vars unset,
# the app defaults to Google's Gemini endpoint with gemini-2.5-flash.
# GOOGLE=your-gemini-api-key-here