-- Migration 069: Groups and group members (social groups)
-- Required for v0.302 Lot S2 - groups may be used by GORM before this migration in some setups

CREATE TABLE IF NOT EXISTS groups (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    name VARCHAR(255) NOT NULL,
    description TEXT,
    creator_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    avatar_url VARCHAR(500),
    is_public BOOLEAN NOT NULL DEFAULT true,
    member_count INT NOT NULL DEFAULT 1,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    deleted_at TIMESTAMPTZ
);

CREATE INDEX IF NOT EXISTS idx_groups_creator_id ON groups(creator_id);
CREATE INDEX IF NOT EXISTS idx_groups_is_public ON groups(is_public);
CREATE INDEX IF NOT EXISTS idx_groups_deleted_at ON groups(deleted_at);

CREATE TABLE IF NOT EXISTS group_members (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    group_id UUID NOT NULL REFERENCES groups(id) ON DELETE CASCADE,
    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    role VARCHAR(50) NOT NULL DEFAULT 'member',
    joined_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    UNIQUE(group_id, user_id)
);

CREATE INDEX IF NOT EXISTS idx_group_members_group_id ON group_members(group_id);
CREATE INDEX IF NOT EXISTS idx_group_members_user_id ON group_members(user_id);