-- Phase 6: score history, TikTok OAuth tokens, search history, FTS GIN index

-- product_score_history: append-only score archive (one row per recalculation)
CREATE TABLE "product_score_history" (
    "id"               TEXT NOT NULL,
    "productId"        TEXT NOT NULL,
    "calculatedAt"     TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "modelVersion"     TEXT NOT NULL,
    "opportunityScore" INTEGER NOT NULL,
    "trendScore"       INTEGER NOT NULL,
    "saturationScore"  INTEGER NOT NULL,
    "demandScore"      INTEGER NOT NULL,
    "competitionScore" INTEGER NOT NULL,
    "engagementScore"  INTEGER NOT NULL,
    "valueScore"       INTEGER NOT NULL,
    "confidenceScore"  INTEGER NOT NULL,

    CONSTRAINT "product_score_history_pkey" PRIMARY KEY ("id")
);

CREATE INDEX "product_score_history_productId_calculatedAt_idx"
    ON "product_score_history"("productId", "calculatedAt");

ALTER TABLE "product_score_history"
    ADD CONSTRAINT "product_score_history_productId_fkey"
    FOREIGN KEY ("productId") REFERENCES "products"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- tiktok_connections: one row per user, stores AES-256-GCM-encrypted OAuth tokens
CREATE TABLE "tiktok_connections" (
    "id"                      TEXT NOT NULL,
    "userId"                  TEXT NOT NULL,
    "encryptedAccessToken"    TEXT NOT NULL,
    "encryptedRefreshToken"   TEXT,
    "tokenExpiresAt"          TIMESTAMP(3),
    "shopCipher"              TEXT,
    "scope"                   TEXT,
    "connectedAt"             TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updatedAt"               TIMESTAMP(3) NOT NULL,

    CONSTRAINT "tiktok_connections_pkey" PRIMARY KEY ("id")
);

CREATE UNIQUE INDEX "tiktok_connections_userId_key" ON "tiktok_connections"("userId");

ALTER TABLE "tiktok_connections"
    ADD CONSTRAINT "tiktok_connections_userId_fkey"
    FOREIGN KEY ("userId") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- search_history: per-user query log for recent/popular searches
CREATE TABLE "search_history" (
    "id"          TEXT NOT NULL,
    "userId"      TEXT NOT NULL,
    "query"       TEXT NOT NULL,
    "resultCount" INTEGER NOT NULL DEFAULT 0,
    "createdAt"   TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

    CONSTRAINT "search_history_pkey" PRIMARY KEY ("id")
);

CREATE INDEX "search_history_userId_createdAt_idx" ON "search_history"("userId", "createdAt");

ALTER TABLE "search_history"
    ADD CONSTRAINT "search_history_userId_fkey"
    FOREIGN KEY ("userId") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- Full-text search GIN index on products."canonicalName"
CREATE INDEX "products_name_fts"
    ON "products" USING gin(to_tsvector('english', "canonicalName"));