-- Migration: Add LinkedIn post insights tables (daily snapshots)
-- Description: Stores scraped post stats separately from linkedin_posts

CREATE TABLE IF NOT EXISTS linkedin_post_insights_posts (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    user_id UUID NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
    linkedin_account_id UUID REFERENCES linkedin_accounts(id) ON DELETE SET NULL,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),

    -- Identity
    post_urn TEXT NOT NULL,
    post_url TEXT,

    -- Content
    post_text TEXT,
    post_date TIMESTAMP WITH TIME ZONE,
    author_username TEXT,

    -- Latest known totals (optional convenience)
    total_reactions INTEGER DEFAULT 0,
    likes INTEGER DEFAULT 0,
    comments INTEGER DEFAULT 0,
    shares INTEGER DEFAULT 0,
    reactions_breakdown JSONB DEFAULT '{}'::JSONB,

    -- Raw data snapshot
    raw_data JSONB,

    first_seen_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),

    UNIQUE(user_id, post_urn)
);

CREATE TABLE IF NOT EXISTS linkedin_post_insights_daily (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    user_id UUID NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
    post_id UUID NOT NULL REFERENCES linkedin_post_insights_posts(id) ON DELETE CASCADE,
    snapshot_date DATE NOT NULL,

    total_reactions INTEGER DEFAULT 0,
    likes INTEGER DEFAULT 0,
    comments INTEGER DEFAULT 0,
    shares INTEGER DEFAULT 0,
    reactions_breakdown JSONB DEFAULT '{}'::JSONB,

    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),

    UNIQUE(post_id, snapshot_date)
);

CREATE INDEX IF NOT EXISTS idx_post_insights_posts_user_id ON linkedin_post_insights_posts(user_id);
CREATE INDEX IF NOT EXISTS idx_post_insights_posts_post_date ON linkedin_post_insights_posts(post_date);
CREATE INDEX IF NOT EXISTS idx_post_insights_daily_user_id ON linkedin_post_insights_daily(user_id);
CREATE INDEX IF NOT EXISTS idx_post_insights_daily_snapshot_date ON linkedin_post_insights_daily(snapshot_date);

-- Triggers for updated_at
CREATE OR REPLACE FUNCTION update_linkedin_post_insights_posts_updated_at()
RETURNS TRIGGER AS $$
BEGIN
    NEW.updated_at = NOW();
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

DROP TRIGGER IF EXISTS update_linkedin_post_insights_posts_updated_at ON linkedin_post_insights_posts;
CREATE TRIGGER update_linkedin_post_insights_posts_updated_at
    BEFORE UPDATE ON linkedin_post_insights_posts
    FOR EACH ROW
    EXECUTE FUNCTION update_linkedin_post_insights_posts_updated_at();

CREATE OR REPLACE FUNCTION update_linkedin_post_insights_daily_updated_at()
RETURNS TRIGGER AS $$
BEGIN
    NEW.updated_at = NOW();
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

DROP TRIGGER IF EXISTS update_linkedin_post_insights_daily_updated_at ON linkedin_post_insights_daily;
CREATE TRIGGER update_linkedin_post_insights_daily_updated_at
    BEFORE UPDATE ON linkedin_post_insights_daily
    FOR EACH ROW
    EXECUTE FUNCTION update_linkedin_post_insights_daily_updated_at();

-- Enable RLS
ALTER TABLE linkedin_post_insights_posts ENABLE ROW LEVEL SECURITY;
ALTER TABLE linkedin_post_insights_daily ENABLE ROW LEVEL SECURITY;

CREATE POLICY "Users can view own post insights posts"
    ON linkedin_post_insights_posts FOR SELECT
    USING (auth.uid() = user_id);

CREATE POLICY "Users can insert own post insights posts"
    ON linkedin_post_insights_posts FOR INSERT
    WITH CHECK (auth.uid() = user_id);

CREATE POLICY "Users can update own post insights posts"
    ON linkedin_post_insights_posts FOR UPDATE
    USING (auth.uid() = user_id);

CREATE POLICY "Users can delete own post insights posts"
    ON linkedin_post_insights_posts FOR DELETE
    USING (auth.uid() = user_id);

CREATE POLICY "Users can view own post insights daily"
    ON linkedin_post_insights_daily FOR SELECT
    USING (auth.uid() = user_id);

CREATE POLICY "Users can insert own post insights daily"
    ON linkedin_post_insights_daily FOR INSERT
    WITH CHECK (auth.uid() = user_id);

CREATE POLICY "Users can update own post insights daily"
    ON linkedin_post_insights_daily FOR UPDATE
    USING (auth.uid() = user_id);

CREATE POLICY "Users can delete own post insights daily"
    ON linkedin_post_insights_daily FOR DELETE
    USING (auth.uid() = user_id);