package db

import (
	"context"
	"database/sql"
	"time"
)

// ConvocationConfig holds per-guild convocation configuration.
type ConvocationConfig struct {
	ID                   int64
	GuildID              string
	CategoryID           string
	LogChannelID         string
	ModalEnabled         bool
	UpdatedAt            time.Time
	PanelChannelID       string
	PanelMessageID       string
	PanelEmbedTitle      string
	PanelEmbedDescription string
	PanelEmbedColor      string
}

// ConvocationConfigRepo handles CRUD for convocation_config.
type ConvocationConfigRepo struct{ db *sql.DB }

// NewConvocationConfigRepo creates a ConvocationConfigRepo.
func NewConvocationConfigRepo(db *sql.DB) *ConvocationConfigRepo {
	return &ConvocationConfigRepo{db: db}
}

// Get returns the convocation config for the given guild.
// Returns an empty (zero-value) config without error if none exists yet.
func (r *ConvocationConfigRepo) Get(ctx context.Context, guildID string) (*ConvocationConfig, error) {
	row := r.db.QueryRowContext(ctx,
		`SELECT id,guild_id,category_id,log_channel_id,modal_enabled,updated_at,
		        panel_channel_id,panel_message_id,panel_embed_title,panel_embed_description,panel_embed_color
		 FROM convocation_config WHERE guild_id=?`, guildID)
	var c ConvocationConfig
	var modalEnabled int
	err := row.Scan(&c.ID, &c.GuildID, &c.CategoryID, &c.LogChannelID, &modalEnabled, &c.UpdatedAt,
		&c.PanelChannelID, &c.PanelMessageID, &c.PanelEmbedTitle, &c.PanelEmbedDescription, &c.PanelEmbedColor)
	if err == sql.ErrNoRows {
		c.GuildID = guildID
		c.ModalEnabled = true
		c.PanelEmbedTitle = "Créer une convocation"
		c.PanelEmbedColor = "#5865f2"
		return &c, nil
	}
	if err != nil {
		return nil, err
	}
	c.ModalEnabled = modalEnabled != 0
	return &c, nil
}

// Upsert inserts or replaces the convocation config for a guild.
func (r *ConvocationConfigRepo) Upsert(ctx context.Context, c *ConvocationConfig) error {
	c.UpdatedAt = time.Now().UTC()
	modalInt := 0
	if c.ModalEnabled {
		modalInt = 1
	}
	_, err := r.db.ExecContext(ctx,
		`INSERT INTO convocation_config(guild_id,category_id,log_channel_id,modal_enabled,updated_at,
		        panel_channel_id,panel_message_id,panel_embed_title,panel_embed_description,panel_embed_color)
		 VALUES(?,?,?,?,?,?,?,?,?,?)
		 ON CONFLICT(guild_id) DO UPDATE SET
		   category_id=excluded.category_id,
		   log_channel_id=excluded.log_channel_id,
		   modal_enabled=excluded.modal_enabled,
		   updated_at=excluded.updated_at,
		   panel_channel_id=excluded.panel_channel_id,
		   panel_embed_title=excluded.panel_embed_title,
		   panel_embed_description=excluded.panel_embed_description,
		   panel_embed_color=excluded.panel_embed_color`,
		c.GuildID, c.CategoryID, c.LogChannelID, modalInt, c.UpdatedAt,
		c.PanelChannelID, c.PanelMessageID, c.PanelEmbedTitle, c.PanelEmbedDescription, c.PanelEmbedColor)
	return err
}

// SetConvocPanelMessage stores the Discord message ID for the convocation panel.
func (r *ConvocationConfigRepo) SetConvocPanelMessage(ctx context.Context, guildID, channelID, messageID string) error {
	_, err := r.db.ExecContext(ctx,
		`UPDATE convocation_config SET panel_channel_id=?, panel_message_id=?, updated_at=? WHERE guild_id=?`,
		channelID, messageID, time.Now().UTC(), guildID)
	return err
}