-- Twitter-Telegram Matching Schema
-- Run this against your telegram_contacts database

-- Table: twitter_telegram_matches
-- Stores confirmed matches between Telegram and Twitter profiles
CREATE TABLE IF NOT EXISTS twitter_telegram_matches (
    id SERIAL PRIMARY KEY,

    -- Telegram side
    telegram_user_id BIGINT NOT NULL REFERENCES contacts(user_id),
    telegram_username VARCHAR(255),
    telegram_name VARCHAR(255),
    telegram_bio TEXT,

    -- Twitter side
    twitter_id VARCHAR(50) NOT NULL,
    twitter_username VARCHAR(100) NOT NULL,
    twitter_name VARCHAR(200),
    twitter_bio TEXT,
    twitter_location VARCHAR(200),
    twitter_verified BOOLEAN,
    twitter_blue_verified BOOLEAN,
    twitter_followers_count INTEGER,

    -- Matching metadata
    match_method VARCHAR(50) NOT NULL,  -- 'exact_bio_handle', 'exact_username', 'username_variation', 'fuzzy_name'
    baseline_confidence FLOAT NOT NULL, -- Confidence before LLM (0-1)
    llm_verdict VARCHAR(20) NOT NULL,   -- 'YES', 'NO', 'UNSURE'
    final_confidence FLOAT NOT NULL CHECK (final_confidence BETWEEN 0 AND 1),

    -- Match details (JSON for flexibility)
    match_details JSONB,  -- {extracted_handles: [...], username_variation: 'xxx', fuzzy_score: 0.85}

    -- LLM metadata
    llm_tokens_used INTEGER,
    llm_cost FLOAT,

    -- Audit trail
    matched_at TIMESTAMP DEFAULT NOW(),
    needs_manual_review BOOLEAN DEFAULT FALSE,
    verified_manually BOOLEAN DEFAULT FALSE,
    manual_review_notes TEXT,

    UNIQUE(telegram_user_id, twitter_id)
);

-- Indexes for performance
CREATE INDEX IF NOT EXISTS idx_ttm_telegram_user ON twitter_telegram_matches(telegram_user_id);
CREATE INDEX IF NOT EXISTS idx_ttm_twitter_id ON twitter_telegram_matches(twitter_id);
CREATE INDEX IF NOT EXISTS idx_ttm_twitter_username ON twitter_telegram_matches(LOWER(twitter_username));
CREATE INDEX IF NOT EXISTS idx_ttm_confidence ON twitter_telegram_matches(final_confidence DESC);
CREATE INDEX IF NOT EXISTS idx_ttm_verdict ON twitter_telegram_matches(llm_verdict);
CREATE INDEX IF NOT EXISTS idx_ttm_method ON twitter_telegram_matches(match_method);
CREATE INDEX IF NOT EXISTS idx_ttm_needs_review ON twitter_telegram_matches(needs_manual_review) WHERE needs_manual_review = TRUE;

-- Table: twitter_match_candidates (temporary staging)
-- Stores potential matches before LLM verification
CREATE TABLE IF NOT EXISTS twitter_match_candidates (
    id SERIAL PRIMARY KEY,

    telegram_user_id BIGINT NOT NULL REFERENCES contacts(user_id),

    -- Twitter candidate info
    twitter_id VARCHAR(50) NOT NULL,
    twitter_username VARCHAR(100) NOT NULL,
    twitter_name VARCHAR(200),
    twitter_bio TEXT,
    twitter_location VARCHAR(200),
    twitter_verified BOOLEAN,
    twitter_blue_verified BOOLEAN,
    twitter_followers_count INTEGER,

    -- Candidate scoring
    candidate_rank INTEGER,              -- 1 = best match, 2 = second best, etc.
    match_method VARCHAR(50),
    baseline_confidence FLOAT,
    match_signals JSONB,                 -- {'handle_match': true, 'fuzzy_score': 0.85, ...}

    -- LLM processing status
    needs_llm_review BOOLEAN DEFAULT TRUE,
    llm_processed BOOLEAN DEFAULT FALSE,
    llm_verdict VARCHAR(20),
    final_confidence FLOAT,

    created_at TIMESTAMP DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_tmc_telegram_user ON twitter_match_candidates(telegram_user_id);
CREATE INDEX IF NOT EXISTS idx_tmc_twitter_id ON twitter_match_candidates(twitter_id);
CREATE INDEX IF NOT EXISTS idx_tmc_needs_review ON twitter_match_candidates(llm_processed, needs_llm_review)
    WHERE needs_llm_review = TRUE AND llm_processed = FALSE;
CREATE INDEX IF NOT EXISTS idx_tmc_rank ON twitter_match_candidates(telegram_user_id, candidate_rank);

-- Grant permissions (adjust as needed for your setup)
-- GRANT ALL PRIVILEGES ON twitter_telegram_matches TO your_user;
-- GRANT ALL PRIVILEGES ON twitter_match_candidates TO your_user;
-- GRANT USAGE, SELECT ON SEQUENCE twitter_telegram_matches_id_seq TO your_user;
-- GRANT USAGE, SELECT ON SEQUENCE twitter_match_candidates_id_seq TO your_user;

COMMENT ON TABLE twitter_telegram_matches IS 'Confirmed matches between Telegram and Twitter profiles';
COMMENT ON TABLE twitter_match_candidates IS 'Temporary staging for potential matches awaiting LLM verification';