package models

import (
	"time"

	"github.com/google/uuid"
)

// PublicEvent is a holiday or school-vacation row imported from
// OpenHolidaysAPI. Global (no owner) — same for every school per region.
type PublicEvent struct {
	ID        uuid.UUID `json:"id" db:"id"`
	Region    string    `json:"region" db:"region"`         // e.g. "DE-NI"
	EventType string    `json:"event_type" db:"event_type"` // public_holiday | school_holiday
	NameDe    string    `json:"name_de" db:"name_de"`
	NameEn    string    `json:"name_en,omitempty" db:"name_en"`
	StartDate string    `json:"start_date" db:"start_date"` // YYYY-MM-DD
	EndDate   string    `json:"end_date" db:"end_date"`
	Source    string    `json:"source,omitempty" db:"source"`
	CreatedAt time.Time `json:"created_at" db:"created_at"`
}

// SchoolCalendarConfig stores the Bundesland selection for one school
// (= one Rektor account). One row per user.
type SchoolCalendarConfig struct {
	UserID          uuid.UUID `json:"user_id" db:"user_id"`
	Bundesland      string    `json:"bundesland" db:"bundesland"` // DE-NI ...
	SchoolYearStart *string   `json:"school_year_start,omitempty" db:"school_year_start"`
	SchoolYearEnd   *string   `json:"school_year_end,omitempty" db:"school_year_end"`
	CreatedAt       time.Time `json:"created_at" db:"created_at"`
	UpdatedAt       time.Time `json:"updated_at" db:"updated_at"`
}

// SchoolEvent is a user-managed event (Fortbildung, Schulfeier, …).
type SchoolEvent struct {
	ID                   uuid.UUID   `json:"id" db:"id"`
	CreatedByUserID      uuid.UUID   `json:"created_by_user_id" db:"created_by_user_id"`
	Title                string      `json:"title" db:"title"`
	Description          string      `json:"description,omitempty" db:"description"`
	EventType            string      `json:"event_type" db:"event_type"`
	IsSchoolFree         bool        `json:"is_school_free" db:"is_school_free"`
	StartDate            string      `json:"start_date" db:"start_date"`
	EndDate              string      `json:"end_date" db:"end_date"`
	StartTime            *string     `json:"start_time,omitempty" db:"start_time"`
	EndTime              *string     `json:"end_time,omitempty" db:"end_time"`
	AffectedClassIDs     []uuid.UUID `json:"affected_class_ids" db:"affected_class_ids"`
	VisibleToParents     bool        `json:"visible_to_parents" db:"visible_to_parents"`
	NotifyParents        bool        `json:"notify_parents" db:"notify_parents"`
	NotifyStudents       bool        `json:"notify_students" db:"notify_students"`
	NotificationLeadDays []int       `json:"notification_lead_days" db:"notification_lead_days"`
	CreatedAt            time.Time   `json:"created_at" db:"created_at"`
	UpdatedAt            time.Time   `json:"updated_at" db:"updated_at"`
}

// Request DTOs

// UpsertSchoolCalendarConfigRequest sets or updates the Bundesland for the
// authenticated user. Both school-year dates are optional (defaults to the
// running year based on today's date).
type UpsertSchoolCalendarConfigRequest struct {
	Bundesland      string  `json:"bundesland" binding:"required,len=5"`
	SchoolYearStart *string `json:"school_year_start,omitempty"`
	SchoolYearEnd   *string `json:"school_year_end,omitempty"`
}

type CreateSchoolEventRequest struct {
	Title                string   `json:"title" binding:"required"`
	Description          string   `json:"description"`
	EventType            string   `json:"event_type" binding:"required,oneof=fortbildung schulfeier klassenfahrt projekttag eltern_info andere"`
	IsSchoolFree         bool     `json:"is_school_free"`
	StartDate            string   `json:"start_date" binding:"required"`
	EndDate              string   `json:"end_date" binding:"required"`
	StartTime            *string  `json:"start_time,omitempty"`
	EndTime              *string  `json:"end_time,omitempty"`
	AffectedClassIDs     []string `json:"affected_class_ids"`
	VisibleToParents     bool     `json:"visible_to_parents"`
	NotifyParents        bool     `json:"notify_parents"`
	NotifyStudents       bool     `json:"notify_students"`
	NotificationLeadDays []int    `json:"notification_lead_days"`
}