"""
Classroom API - Pydantic Models

Alle Request- und Response-Models fuer die Classroom API.
"""

from typing import Dict, List, Optional, Any
from pydantic import BaseModel, Field


# === Session Models ===

class CreateSessionRequest(BaseModel):
    """Request zum Erstellen einer neuen Session."""
    teacher_id: str = Field(..., description="ID des Lehrers")
    class_id: str = Field(..., description="ID der Klasse")
    subject: str = Field(..., description="Unterrichtsfach")
    topic: Optional[str] = Field(None, description="Thema der Stunde")
    phase_durations: Optional[Dict[str, int]] = Field(
        None,
        description="Optionale individuelle Phasendauern in Minuten"
    )


class NotesRequest(BaseModel):
    """Request zum Aktualisieren von Notizen."""
    notes: str = Field("", description="Stundennotizen")
    homework: str = Field("", description="Hausaufgaben")


class ExtendTimeRequest(BaseModel):
    """Request zum Verlaengern der aktuellen Phase (Feature f28)."""
    minutes: int = Field(5, ge=1, le=30, description="Zusaetzliche Minuten (1-30)")


class PhaseInfo(BaseModel):
    """Informationen zu einer Phase."""
    phase: str
    display_name: str
    icon: str
    duration_minutes: int
    is_completed: bool
    is_current: bool
    is_future: bool


class TimerStatus(BaseModel):
    """Timer-Status einer Phase."""
    remaining_seconds: int
    remaining_formatted: str
    total_seconds: int
    total_formatted: str
    elapsed_seconds: int
    elapsed_formatted: str
    percentage_remaining: int
    percentage_elapsed: int
    percentage: int = Field(description="Alias fuer percentage_remaining (Visual Timer)")
    warning: bool
    overtime: bool
    overtime_seconds: int
    overtime_formatted: Optional[str]
    is_paused: bool = Field(False, description="Ist der Timer pausiert?")


class SuggestionItem(BaseModel):
    """Ein Aktivitaets-Vorschlag."""
    id: str
    title: str
    description: str
    activity_type: str
    estimated_minutes: int
    icon: str
    content_url: Optional[str]


class SessionResponse(BaseModel):
    """Vollstaendige Session-Response."""
    session_id: str
    teacher_id: str
    class_id: str
    subject: str
    topic: Optional[str]
    current_phase: str
    phase_display_name: str
    phase_started_at: Optional[str]
    lesson_started_at: Optional[str]
    lesson_ended_at: Optional[str]
    timer: TimerStatus
    phases: List[PhaseInfo]
    phase_history: List[Dict[str, Any]]
    notes: str
    homework: str
    is_active: bool
    is_ended: bool
    is_paused: bool = Field(False, description="Ist die Stunde pausiert?")


class SuggestionsResponse(BaseModel):
    """Response fuer Vorschlaege."""
    suggestions: List[SuggestionItem]
    current_phase: str
    phase_display_name: str
    total_available: int


class PhasesListResponse(BaseModel):
    """Liste aller verfuegbaren Phasen."""
    phases: List[Dict[str, Any]]


class ActiveSessionsResponse(BaseModel):
    """Liste aktiver Sessions."""
    sessions: List[Dict[str, Any]]
    count: int


# === Session History Models ===

class SessionHistoryItem(BaseModel):
    """Einzelner Eintrag in der Session-History."""
    session_id: str
    teacher_id: str
    class_id: str
    subject: str
    topic: Optional[str]
    lesson_started_at: Optional[str]
    lesson_ended_at: Optional[str]
    total_duration_minutes: Optional[int]
    phases_completed: int
    notes: str
    homework: str


class SessionHistoryResponse(BaseModel):
    """Response fuer Session-History."""
    sessions: List[SessionHistoryItem]
    total_count: int
    limit: int
    offset: int


# === Template Models ===

class TemplateCreate(BaseModel):
    """Request zum Erstellen einer Vorlage."""
    name: str = Field(..., min_length=1, max_length=200, description="Name der Vorlage")
    description: str = Field("", max_length=1000, description="Beschreibung")
    subject: str = Field("", max_length=100, description="Fach")
    grade_level: str = Field("", max_length=50, description="Klassenstufe (z.B. '7', '10')")
    phase_durations: Optional[Dict[str, int]] = Field(
        None,
        description="Phasendauern in Minuten"
    )
    default_topic: str = Field("", max_length=500, description="Vorausgefuelltes Thema")
    default_notes: str = Field("", description="Vorausgefuellte Notizen")
    is_public: bool = Field(False, description="Vorlage fuer alle sichtbar?")


class TemplateUpdate(BaseModel):
    """Request zum Aktualisieren einer Vorlage."""
    name: Optional[str] = Field(None, min_length=1, max_length=200)
    description: Optional[str] = Field(None, max_length=1000)
    subject: Optional[str] = Field(None, max_length=100)
    grade_level: Optional[str] = Field(None, max_length=50)
    phase_durations: Optional[Dict[str, int]] = None
    default_topic: Optional[str] = Field(None, max_length=500)
    default_notes: Optional[str] = None
    is_public: Optional[bool] = None


class TemplateResponse(BaseModel):
    """Response fuer eine einzelne Vorlage."""
    template_id: str
    teacher_id: str
    name: str
    description: str
    subject: str
    grade_level: str
    phase_durations: Dict[str, int]
    default_topic: str
    default_notes: str
    is_public: bool
    usage_count: int
    total_duration_minutes: int
    created_at: Optional[str]
    updated_at: Optional[str]
    is_system_template: bool = False


class TemplateListResponse(BaseModel):
    """Response fuer Template-Liste."""
    templates: List[TemplateResponse]
    total_count: int


# === Homework Models ===

class CreateHomeworkRequest(BaseModel):
    """Request zum Erstellen einer Hausaufgabe."""
    teacher_id: str
    class_id: str
    subject: str
    title: str = Field(..., max_length=300)
    description: str = ""
    session_id: Optional[str] = None
    due_date: Optional[str] = Field(None, description="ISO-Format Datum")


class UpdateHomeworkRequest(BaseModel):
    """Request zum Aktualisieren einer Hausaufgabe."""
    title: Optional[str] = Field(None, max_length=300)
    description: Optional[str] = None
    due_date: Optional[str] = Field(None, description="ISO-Format Datum")
    status: Optional[str] = Field(None, description="assigned, in_progress, completed")


class HomeworkResponse(BaseModel):
    """Response fuer eine Hausaufgabe."""
    homework_id: str
    teacher_id: str
    class_id: str
    subject: str
    title: str
    description: str
    session_id: Optional[str]
    due_date: Optional[str]
    status: str
    is_overdue: bool
    created_at: Optional[str]
    updated_at: Optional[str]


class HomeworkListResponse(BaseModel):
    """Response fuer Liste von Hausaufgaben."""
    homework: List[HomeworkResponse]
    total: int


# === Material Models ===

class CreateMaterialRequest(BaseModel):
    """Request zum Erstellen eines Materials."""
    teacher_id: str
    title: str = Field(..., max_length=300)
    material_type: str = Field("document", description="document, link, video, image, worksheet, presentation, other")
    url: Optional[str] = Field(None, max_length=2000)
    description: str = ""
    phase: Optional[str] = Field(None, description="einstieg, erarbeitung, sicherung, transfer, reflexion")
    subject: str = ""
    grade_level: str = ""
    tags: List[str] = []
    is_public: bool = False
    session_id: Optional[str] = None


class UpdateMaterialRequest(BaseModel):
    """Request zum Aktualisieren eines Materials."""
    title: Optional[str] = Field(None, max_length=300)
    material_type: Optional[str] = None
    url: Optional[str] = Field(None, max_length=2000)
    description: Optional[str] = None
    phase: Optional[str] = None
    subject: Optional[str] = None
    grade_level: Optional[str] = None
    tags: Optional[List[str]] = None
    is_public: Optional[bool] = None


class MaterialResponse(BaseModel):
    """Response fuer ein Material."""
    material_id: str
    teacher_id: str
    title: str
    material_type: str
    url: Optional[str]
    description: str
    phase: Optional[str]
    subject: str
    grade_level: str
    tags: List[str]
    is_public: bool
    usage_count: int
    session_id: Optional[str]
    created_at: Optional[str]
    updated_at: Optional[str]


class MaterialListResponse(BaseModel):
    """Response fuer Liste von Materialien."""
    materials: List[MaterialResponse]
    total: int


# === Analytics Models ===

class SessionSummaryResponse(BaseModel):
    """Response fuer Session-Summary."""
    session_id: str
    teacher_id: str
    class_id: str
    subject: str
    topic: Optional[str]
    date: Optional[str]
    date_formatted: str
    total_duration_seconds: int
    total_duration_formatted: str
    planned_duration_seconds: int
    planned_duration_formatted: str
    phases_completed: int
    total_phases: int
    completion_percentage: int
    phase_statistics: List[Dict[str, Any]]
    total_overtime_seconds: int
    total_overtime_formatted: str
    phases_with_overtime: int
    total_pause_count: int
    total_pause_seconds: int
    reflection_notes: str = ""
    reflection_rating: Optional[int] = None
    key_learnings: List[str] = []


class TeacherAnalyticsResponse(BaseModel):
    """Response fuer Lehrer-Analytics."""
    teacher_id: str
    period_start: Optional[str]
    period_end: Optional[str]
    total_sessions: int
    completed_sessions: int
    total_teaching_minutes: int
    total_teaching_hours: float
    avg_phase_durations: Dict[str, int]
    sessions_with_overtime: int
    overtime_percentage: int
    avg_overtime_seconds: int
    avg_overtime_formatted: str
    most_overtime_phase: Optional[str]
    avg_pause_count: float
    avg_pause_duration_seconds: int
    subjects_taught: Dict[str, int]
    classes_taught: Dict[str, int]


class ReflectionCreate(BaseModel):
    """Request-Body fuer Reflection-Erstellung."""
    session_id: str
    teacher_id: str
    notes: str = ""
    overall_rating: Optional[int] = Field(None, ge=1, le=5)
    what_worked: List[str] = []
    improvements: List[str] = []
    notes_for_next_lesson: str = ""


class ReflectionUpdate(BaseModel):
    """Request-Body fuer Reflection-Update."""
    notes: Optional[str] = None
    overall_rating: Optional[int] = Field(None, ge=1, le=5)
    what_worked: Optional[List[str]] = None
    improvements: Optional[List[str]] = None
    notes_for_next_lesson: Optional[str] = None


class ReflectionResponse(BaseModel):
    """Response fuer eine einzelne Reflection."""
    reflection_id: str
    session_id: str
    teacher_id: str
    notes: str
    overall_rating: Optional[int]
    what_worked: List[str]
    improvements: List[str]
    notes_for_next_lesson: str
    created_at: Optional[str]
    updated_at: Optional[str]


# === Feedback Models ===

class FeedbackCreate(BaseModel):
    """Request zum Erstellen von Feedback."""
    title: str = Field(..., min_length=3, max_length=500, description="Kurzer Titel")
    description: str = Field(..., min_length=10, description="Beschreibung")
    feedback_type: str = Field("improvement", description="bug, feature_request, improvement, praise, question")
    priority: str = Field("medium", description="critical, high, medium, low")
    teacher_name: str = Field("", description="Name des Lehrers")
    teacher_email: str = Field("", description="E-Mail fuer Rueckfragen")
    context_url: str = Field("", description="URL wo Feedback gegeben wurde")
    context_phase: str = Field("", description="Aktuelle Phase")
    context_session_id: Optional[str] = Field(None, description="Session-ID falls aktiv")
    related_feature: Optional[str] = Field(None, description="Verwandtes Feature")


class FeedbackResponse(BaseModel):
    """Response fuer Feedback."""
    id: str
    teacher_id: str
    teacher_name: str
    title: str
    description: str
    feedback_type: str
    priority: str
    status: str
    created_at: str
    response: Optional[str] = None


class FeedbackListResponse(BaseModel):
    """Liste von Feedbacks."""
    feedbacks: List[Dict[str, Any]]
    total: int


class FeedbackStatsResponse(BaseModel):
    """Feedback-Statistiken."""
    total: int
    by_status: Dict[str, int]
    by_type: Dict[str, int]
    by_priority: Dict[str, int]


# === Settings Models ===

class TeacherSettingsResponse(BaseModel):
    """Response fuer Lehrer-Einstellungen."""
    teacher_id: str
    default_phase_durations: Dict[str, int]
    audio_enabled: bool = True
    high_contrast: bool = False
    show_statistics: bool = True


class UpdatePhaseDurationsRequest(BaseModel):
    """Request zum Aktualisieren der Phasen-Dauern."""
    durations: Dict[str, int] = Field(
        ...,
        description="Phasen-Dauern in Minuten, z.B. {'einstieg': 10, 'erarbeitung': 25}",
        examples=[{"einstieg": 10, "erarbeitung": 25, "sicherung": 10, "transfer": 8, "reflexion": 5}]
    )


class UpdatePreferencesRequest(BaseModel):
    """Request zum Aktualisieren der UI-Praeferenzen."""
    audio_enabled: Optional[bool] = None
    high_contrast: Optional[bool] = None
    show_statistics: Optional[bool] = None


# === Context Models ===

class SchoolInfo(BaseModel):
    """Schul-Informationen."""
    federal_state: str
    federal_state_name: str = ""
    school_type: str
    school_type_name: str = ""


class SchoolYearInfo(BaseModel):
    """Schuljahr-Informationen."""
    id: str
    start: Optional[str] = None
    current_week: int = 1


class MacroPhaseInfo(BaseModel):
    """Makro-Phase Informationen."""
    id: str
    label: str
    confidence: float = 1.0


class CoreCounts(BaseModel):
    """Kern-Zaehler fuer den Kontext."""
    classes: int = 0
    exams_scheduled: int = 0
    corrections_pending: int = 0


class ContextFlags(BaseModel):
    """Status-Flags des Kontexts."""
    onboarding_completed: bool = False
    has_classes: bool = False
    has_schedule: bool = False
    is_exam_period: bool = False
    is_before_holidays: bool = False


class TeacherContextResponse(BaseModel):
    """Response fuer GET /v1/context."""
    schema_version: str = "1.0"
    teacher_id: str
    school: SchoolInfo
    school_year: SchoolYearInfo
    macro_phase: MacroPhaseInfo
    core_counts: CoreCounts
    flags: ContextFlags


class UpdateContextRequest(BaseModel):
    """Request zum Aktualisieren des Kontexts."""
    federal_state: Optional[str] = None
    school_type: Optional[str] = None
    schoolyear: Optional[str] = None
    schoolyear_start: Optional[str] = None
    macro_phase: Optional[str] = None
    current_week: Optional[int] = None


# === Event Models ===

class CreateEventRequest(BaseModel):
    """Request zum Erstellen eines Events."""
    title: str
    event_type: str = "other"
    start_date: str
    end_date: Optional[str] = None
    class_id: Optional[str] = None
    subject: Optional[str] = None
    description: str = ""
    needs_preparation: bool = True
    reminder_days_before: int = 7


class EventResponse(BaseModel):
    """Response fuer ein Event."""
    id: str
    teacher_id: str
    event_type: str
    title: str
    description: str
    start_date: str
    end_date: Optional[str]
    class_id: Optional[str]
    subject: Optional[str]
    status: str
    needs_preparation: bool
    preparation_done: bool
    reminder_days_before: int


# === Routine Models ===

class CreateRoutineRequest(BaseModel):
    """Request zum Erstellen einer Routine."""
    title: str
    routine_type: str = "other"
    recurrence_pattern: str = "weekly"
    day_of_week: Optional[int] = None
    day_of_month: Optional[int] = None
    time_of_day: Optional[str] = None
    duration_minutes: int = 60
    description: str = ""


class RoutineResponse(BaseModel):
    """Response fuer eine Routine."""
    id: str
    teacher_id: str
    routine_type: str
    title: str
    description: str
    recurrence_pattern: str
    day_of_week: Optional[int]
    day_of_month: Optional[int]
    time_of_day: Optional[str]
    duration_minutes: int
    is_active: bool