CREATE TABLE kol_profiles (
    id              BIGSERIAL PRIMARY KEY,
    tenant_id       BIGINT NOT NULL REFERENCES tenants(id),
    user_id         BIGINT NOT NULL REFERENCES users(id),
    display_name    VARCHAR(100) NOT NULL,
    bio             TEXT,
    avatar_url      TEXT,
    market_enabled  BOOLEAN NOT NULL DEFAULT FALSE,
    status          VARCHAR(20) NOT NULL DEFAULT 'active',
    created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    deleted_at      TIMESTAMPTZ
);
CREATE UNIQUE INDEX uk_kol_profile_user_active
    ON kol_profiles(user_id) WHERE deleted_at IS NULL;
CREATE INDEX idx_kol_profile_tenant
    ON kol_profiles(tenant_id) WHERE deleted_at IS NULL;

CREATE TABLE kol_packages (
    id              BIGSERIAL PRIMARY KEY,
    tenant_id       BIGINT NOT NULL REFERENCES tenants(id),
    kol_profile_id  BIGINT NOT NULL REFERENCES kol_profiles(id),
    name            VARCHAR(200) NOT NULL,
    description     TEXT,
    cover_url       TEXT,
    industry        VARCHAR(100),
    tags            JSONB NOT NULL DEFAULT '[]',
    price_note      VARCHAR(200),
    status          VARCHAR(20) NOT NULL DEFAULT 'draft',
    created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    deleted_at      TIMESTAMPTZ
);
CREATE INDEX idx_kol_package_profile
    ON kol_packages(kol_profile_id, created_at DESC) WHERE deleted_at IS NULL;
CREATE INDEX idx_kol_package_status
    ON kol_packages(status, created_at DESC) WHERE deleted_at IS NULL;

CREATE TABLE kol_prompts (
    id                    BIGSERIAL PRIMARY KEY,
    tenant_id             BIGINT NOT NULL REFERENCES tenants(id),
    package_id            BIGINT NOT NULL REFERENCES kol_packages(id),
    name                  VARCHAR(200) NOT NULL,
    platform_hint         VARCHAR(100),
    status                VARCHAR(20) NOT NULL DEFAULT 'draft',
    sort_order            INT NOT NULL DEFAULT 0,
    published_revision_no INT,
    draft_revision_no     INT,
    created_by            BIGINT NOT NULL REFERENCES users(id),
    updated_by            BIGINT NOT NULL REFERENCES users(id),
    created_at            TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at            TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    deleted_at            TIMESTAMPTZ
);
CREATE INDEX idx_kol_prompt_package
    ON kol_prompts(package_id, sort_order, created_at) WHERE deleted_at IS NULL;
CREATE INDEX idx_kol_prompt_tenant_status
    ON kol_prompts(tenant_id, status, created_at DESC) WHERE deleted_at IS NULL;

CREATE TABLE kol_prompt_revisions (
    id                 BIGSERIAL PRIMARY KEY,
    tenant_id          BIGINT NOT NULL REFERENCES tenants(id),
    prompt_id          BIGINT NOT NULL REFERENCES kol_prompts(id),
    revision_no        INT NOT NULL,
    prompt_asset_key   TEXT NOT NULL,
    schema_json        JSONB NOT NULL DEFAULT '{}',
    card_config_json   JSONB NOT NULL DEFAULT '{}',
    created_by         BIGINT NOT NULL REFERENCES users(id),
    created_at         TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    UNIQUE (prompt_id, revision_no)
);
CREATE INDEX idx_kol_prompt_revision_prompt
    ON kol_prompt_revisions(prompt_id, revision_no DESC);

CREATE TABLE kol_subscriptions (
    id           BIGSERIAL PRIMARY KEY,
    tenant_id    BIGINT NOT NULL REFERENCES tenants(id),
    package_id   BIGINT NOT NULL REFERENCES kol_packages(id),
    status       VARCHAR(20) NOT NULL DEFAULT 'pending',
    approved_by  BIGINT REFERENCES users(id),
    start_at     TIMESTAMPTZ,
    end_at       TIMESTAMPTZ,
    created_at   TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at   TIMESTAMPTZ NOT NULL DEFAULT NOW()
);
CREATE UNIQUE INDEX uk_kol_subscription_active
    ON kol_subscriptions(tenant_id, package_id)
    WHERE status IN ('pending', 'active');
CREATE INDEX idx_kol_subscription_package
    ON kol_subscriptions(package_id, status, created_at DESC);

CREATE TABLE kol_subscription_prompts (
    id               BIGSERIAL PRIMARY KEY,
    tenant_id        BIGINT NOT NULL REFERENCES tenants(id),
    subscription_id  BIGINT NOT NULL REFERENCES kol_subscriptions(id),
    package_id       BIGINT NOT NULL REFERENCES kol_packages(id),
    prompt_id        BIGINT NOT NULL REFERENCES kol_prompts(id),
    status           VARCHAR(20) NOT NULL DEFAULT 'active',
    granted_at       TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    revoked_at       TIMESTAMPTZ,
    created_at       TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at       TIMESTAMPTZ NOT NULL DEFAULT NOW()
);
CREATE UNIQUE INDEX uk_kol_subscription_prompt
    ON kol_subscription_prompts(subscription_id, prompt_id);
CREATE INDEX idx_kol_subscription_prompt_tenant
    ON kol_subscription_prompts(tenant_id, status, created_at DESC);

CREATE TABLE kol_usage_logs (
    id                     BIGSERIAL PRIMARY KEY,
    tenant_id              BIGINT NOT NULL REFERENCES tenants(id),
    subscription_id        BIGINT REFERENCES kol_subscriptions(id),
    subscription_prompt_id BIGINT REFERENCES kol_subscription_prompts(id),
    package_id             BIGINT NOT NULL REFERENCES kol_packages(id),
    prompt_id              BIGINT NOT NULL REFERENCES kol_prompts(id),
    prompt_revision_no     INT NOT NULL,
    article_id             BIGINT REFERENCES articles(id),
    generation_task_id     BIGINT REFERENCES generation_tasks(id),
    status                 VARCHAR(20) NOT NULL DEFAULT 'pending',
    variables_snapshot     JSONB,
    schema_snapshot        JSONB,
    rendered_prompt_hash   VARCHAR(64),
    error_message          TEXT,
    created_at             TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    finished_at            TIMESTAMPTZ
);
CREATE INDEX idx_kol_usage_package  ON kol_usage_logs(package_id, created_at DESC);
CREATE INDEX idx_kol_usage_tenant   ON kol_usage_logs(tenant_id, created_at DESC);
CREATE INDEX idx_kol_usage_prompt   ON kol_usage_logs(prompt_id, created_at DESC);

CREATE TABLE kol_assist_tasks (
    id              VARCHAR(64) PRIMARY KEY,
    tenant_id       BIGINT NOT NULL REFERENCES tenants(id),
    kol_profile_id  BIGINT NOT NULL REFERENCES kol_profiles(id),
    prompt_id       BIGINT REFERENCES kol_prompts(id),
    operator_id     BIGINT NOT NULL REFERENCES users(id),
    task_type       VARCHAR(50) NOT NULL,
    status          VARCHAR(20) NOT NULL DEFAULT 'queued',
    request_json    JSONB NOT NULL DEFAULT '{}'::jsonb,
    result_json     JSONB,
    error_message   TEXT,
    started_at      TIMESTAMPTZ,
    completed_at    TIMESTAMPTZ,
    created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW()
);
CREATE INDEX idx_kol_assist_tenant_profile
    ON kol_assist_tasks(tenant_id, kol_profile_id, created_at DESC);
CREATE INDEX idx_kol_assist_status
    ON kol_assist_tasks(status, created_at DESC);