-- CreateTable
CREATE TABLE "User" (
    "id" TEXT NOT NULL PRIMARY KEY,
    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updatedAt" DATETIME NOT NULL,
    "handle" TEXT
);

-- CreateTable
CREATE TABLE "Chat" (
    "id" TEXT NOT NULL PRIMARY KEY,
    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updatedAt" DATETIME NOT NULL,
    "title" TEXT,
    "userId" TEXT,
    CONSTRAINT "Chat_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE SET NULL ON UPDATE CASCADE
);

-- CreateTable
CREATE TABLE "Message" (
    "id" TEXT NOT NULL PRIMARY KEY,
    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "chatId" TEXT NOT NULL,
    "role" TEXT NOT NULL,
    "content" TEXT NOT NULL,
    "name" TEXT,
    "metadata" JSONB,
    CONSTRAINT "Message_chatId_fkey" FOREIGN KEY ("chatId") REFERENCES "Chat" ("id") ON DELETE CASCADE ON UPDATE CASCADE
);

-- CreateTable
CREATE TABLE "LlmCall" (
    "id" TEXT NOT NULL PRIMARY KEY,
    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "chatId" TEXT NOT NULL,
    "provider" TEXT NOT NULL,
    "model" TEXT NOT NULL,
    "request" JSONB NOT NULL,
    "response" JSONB,
    "inputTokens" INTEGER,
    "outputTokens" INTEGER,
    "totalTokens" INTEGER,
    "latencyMs" INTEGER,
    "error" TEXT,
    CONSTRAINT "LlmCall_chatId_fkey" FOREIGN KEY ("chatId") REFERENCES "Chat" ("id") ON DELETE CASCADE ON UPDATE CASCADE
);

-- CreateIndex
CREATE UNIQUE INDEX "User_handle_key" ON "User"("handle");

-- CreateIndex
CREATE INDEX "Chat_userId_idx" ON "Chat"("userId");

-- CreateIndex
CREATE INDEX "Message_chatId_createdAt_idx" ON "Message"("chatId", "createdAt");

-- CreateIndex
CREATE INDEX "LlmCall_chatId_createdAt_idx" ON "LlmCall"("chatId", "createdAt");

-- CreateIndex
CREATE INDEX "LlmCall_provider_model_createdAt_idx" ON "LlmCall"("provider", "model", "createdAt");