-- Primeiro, dropar todas as tabelas na ordem correta (inversa das dependências)
DROP TABLE IF EXISTS student_phonics_achievements;
DROP TABLE IF EXISTS phonics_achievements;
DROP TABLE IF EXISTS achievement_types;
DROP TABLE IF EXISTS student_phonics_attempt_answers;
DROP TABLE IF EXISTS student_phonics_attempts;
DROP TABLE IF EXISTS student_phonics_progress;
DROP TABLE IF EXISTS phonics_exercise_media;
DROP TABLE IF EXISTS media_types;
DROP TABLE IF EXISTS phonics_exercise_words;
DROP TABLE IF EXISTS phonics_words;
DROP TABLE IF EXISTS phonics_exercises;
DROP TABLE IF EXISTS phonics_exercise_types;
DROP TABLE IF EXISTS phonics_exercise_categories;

-- Dropar os índices (não é necessário pois eles são dropados junto com as tabelas)
-- DROP INDEX IF EXISTS idx_exercises_category;
-- DROP INDEX IF EXISTS idx_exercises_type;
-- DROP INDEX IF EXISTS idx_exercise_words;
-- DROP INDEX IF EXISTS idx_student_progress;
-- DROP INDEX IF EXISTS idx_student_attempts;
-- DROP INDEX IF EXISTS idx_attempt_answers;
-- DROP INDEX IF EXISTS idx_student_achievements;

-- Recriar as tabelas na ordem correta

-- Tabela de categorias de exercícios
CREATE TABLE phonics_exercise_categories (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    name VARCHAR(255) NOT NULL,
    description TEXT,
    level INTEGER NOT NULL,
    order_index INTEGER NOT NULL,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Tabela de tipos de exercícios
CREATE TABLE phonics_exercise_types (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    name VARCHAR(50) NOT NULL, -- (rima, aliteração, segmentação, etc)
    description TEXT,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Tabela de exercícios
CREATE TABLE phonics_exercises (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    category_id UUID REFERENCES phonics_exercise_categories(id),
    type_id UUID REFERENCES phonics_exercise_types(id),
    title VARCHAR(255) NOT NULL,
    description TEXT,
    difficulty_level INTEGER NOT NULL, -- (1-5)
    estimated_time_seconds INTEGER,
    instructions TEXT NOT NULL,
    points INTEGER DEFAULT 10,
    is_active BOOLEAN DEFAULT true,
    required_score FLOAT DEFAULT 0.7, -- Pontuação mínima para passar (70%)
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Tabela de palavras
CREATE TABLE phonics_words (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    word VARCHAR(255) NOT NULL,
    phonetic_transcription VARCHAR(255),
    syllables_count INTEGER NOT NULL,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Tabela de relação exercício-palavras
CREATE TABLE phonics_exercise_words (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    exercise_id UUID REFERENCES phonics_exercises(id),
    word_id UUID REFERENCES phonics_words(id),
    is_correct_answer BOOLEAN DEFAULT false,
    order_index INTEGER,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    UNIQUE(exercise_id, word_id)
);

-- Tabela de tipos de mídia
CREATE TABLE media_types (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    name VARCHAR(50) NOT NULL, -- (image, sound, animation)
    description TEXT,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Tabela de recursos de mídia
CREATE TABLE phonics_exercise_media (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    exercise_id UUID REFERENCES phonics_exercises(id),
    media_type_id UUID REFERENCES media_types(id),
    url TEXT NOT NULL,
    alt_text TEXT,
    order_index INTEGER,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Tabela de progresso do estudante
CREATE TABLE student_phonics_progress (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    student_id UUID REFERENCES auth.users(id),
    exercise_id UUID REFERENCES phonics_exercises(id),
    attempts INTEGER DEFAULT 0,
    best_score FLOAT DEFAULT 0,
    last_score FLOAT DEFAULT 0,
    completed BOOLEAN DEFAULT false,
    completed_at TIMESTAMP WITH TIME ZONE,
    stars INTEGER DEFAULT 0, -- (1-3 estrelas)
    xp_earned INTEGER DEFAULT 0,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    UNIQUE(student_id, exercise_id)
);

-- Tabela de tentativas
CREATE TABLE student_phonics_attempts (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    student_id UUID REFERENCES auth.users(id),
    exercise_id UUID REFERENCES phonics_exercises(id),
    score FLOAT NOT NULL,
    time_spent_seconds INTEGER,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Tabela de respostas das tentativas
CREATE TABLE student_phonics_attempt_answers (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    attempt_id UUID REFERENCES student_phonics_attempts(id),
    word_id UUID REFERENCES phonics_words(id),
    is_correct BOOLEAN NOT NULL,
    answer_text TEXT,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Tabela de tipos de conquistas
CREATE TABLE achievement_types (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    name VARCHAR(50) NOT NULL, -- (streak, completion, mastery)
    description TEXT,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Tabela de conquistas
CREATE TABLE phonics_achievements (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    type_id UUID REFERENCES achievement_types(id),
    name VARCHAR(255) NOT NULL,
    description TEXT,
    points INTEGER DEFAULT 0,
    icon_url TEXT,
    required_count INTEGER DEFAULT 1,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Tabela de conquistas do estudante
CREATE TABLE student_phonics_achievements (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    student_id UUID REFERENCES auth.users(id),
    achievement_id UUID REFERENCES phonics_achievements(id),
    earned_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    UNIQUE(student_id, achievement_id)
);

-- Recriar os índices
CREATE INDEX idx_exercises_category ON phonics_exercises(category_id);
CREATE INDEX idx_exercises_type ON phonics_exercises(type_id);
CREATE INDEX idx_exercise_words ON phonics_exercise_words(exercise_id, word_id);
CREATE INDEX idx_student_progress ON student_phonics_progress(student_id, exercise_id);
CREATE INDEX idx_student_attempts ON student_phonics_attempts(student_id, exercise_id);
CREATE INDEX idx_attempt_answers ON student_phonics_attempt_answers(attempt_id);
CREATE INDEX idx_student_achievements ON student_phonics_achievements(student_id);