-- CRM tables in PostgreSQL (mirrors MySQL crm_* schema for CrmRepo compatibility)

CREATE TABLE IF NOT EXISTS crm_tenant (
    id BIGSERIAL PRIMARY KEY,
    tenant_id VARCHAR(32) NOT NULL UNIQUE,
    tenant_name VARCHAR(100) NOT NULL,
    tenant_code VARCHAR(64) NOT NULL DEFAULT '' UNIQUE,
    status SMALLINT NOT NULL DEFAULT 1,
    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMP NOT NULL DEFAULT NOW()
);

CREATE TABLE IF NOT EXISTS crm_tenant_user (
    id BIGSERIAL PRIMARY KEY,
    tenant_user_id VARCHAR(32) NOT NULL UNIQUE,
    tenant_id VARCHAR(32) NOT NULL,
    user_id VARCHAR(32) NOT NULL,
    is_primary SMALLINT NOT NULL DEFAULT 1,
    status SMALLINT NOT NULL DEFAULT 1,
    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
    UNIQUE (tenant_id, user_id)
);

CREATE INDEX IF NOT EXISTS idx_crm_tenant_user_uid ON crm_tenant_user(user_id);

CREATE TABLE IF NOT EXISTS crm_tenant_relationship (
    id BIGSERIAL PRIMARY KEY,
    relationship_id VARCHAR(40) NOT NULL UNIQUE,
    owner_tenant_id VARCHAR(32) NOT NULL,
    from_tenant_id VARCHAR(32) NOT NULL,
    to_tenant_id VARCHAR(32) NOT NULL,
    relation_type VARCHAR(32) NOT NULL,
    status SMALLINT NOT NULL DEFAULT 1,
    valid_from TIMESTAMP NOT NULL DEFAULT NOW(),
    valid_to TIMESTAMP NULL,
    source VARCHAR(32) NOT NULL DEFAULT 'manual',
    created_by VARCHAR(32) NOT NULL DEFAULT '',
    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
    CHECK (from_tenant_id <> to_tenant_id)
);

CREATE UNIQUE INDEX IF NOT EXISTS uk_crm_rel_unique
ON crm_tenant_relationship(owner_tenant_id, from_tenant_id, to_tenant_id, relation_type, valid_from);

CREATE INDEX IF NOT EXISTS idx_crm_rel_from ON crm_tenant_relationship(owner_tenant_id, from_tenant_id, status);
CREATE INDEX IF NOT EXISTS idx_crm_rel_to ON crm_tenant_relationship(owner_tenant_id, to_tenant_id, status);

CREATE TABLE IF NOT EXISTS crm_tenant_relationship_history (
    id BIGSERIAL PRIMARY KEY,
    history_id VARCHAR(40) NOT NULL UNIQUE,
    relationship_id VARCHAR(40) NOT NULL,
    change_type VARCHAR(32) NOT NULL,
    before_json JSONB NULL,
    after_json JSONB NULL,
    changed_by VARCHAR(32) NOT NULL DEFAULT '',
    changed_at TIMESTAMP NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_crm_rel_hist ON crm_tenant_relationship_history(relationship_id, changed_at DESC);

-- Seed
INSERT INTO crm_tenant (tenant_id, tenant_name, tenant_code, status)
VALUES ('t_default_001', '默认租户', 'DEFAULT', 1)
ON CONFLICT (tenant_id) DO NOTHING;

INSERT INTO crm_tenant_user (tenant_user_id, tenant_id, user_id, is_primary, status)
VALUES ('tu_admin_001', 't_default_001', 'u_admin_001', 1, 1)
ON CONFLICT (tenant_id, user_id) DO NOTHING;