package repository

import (
	"context"

	"gorm.io/gorm"

	"github.com/gochat/gochat/internal/model"
)

// IntegrationHookRepo implements GORM repository for IntegrationHook.
// Reference: Chatwoot Integrations::Hook model + HooksController
type IntegrationHookRepo struct {
	db *gorm.DB
}

// DB returns the underlying gorm.DB for services that need adjacent models.
func (r *IntegrationHookRepo) DB() *gorm.DB {
	return r.db
}

// NewIntegrationHookRepo creates a new IntegrationHook repository.
func NewIntegrationHookRepo(db *gorm.DB) *IntegrationHookRepo {
	return &IntegrationHookRepo{db: db}
}

// GetByID retrieves an integration hook by primary key.
func (r *IntegrationHookRepo) GetByID(ctx context.Context, id uint) (*model.IntegrationHook, error) {
	var hook model.IntegrationHook
	if err := r.db.WithContext(ctx).Preload("Inbox").First(&hook, id).Error; err != nil {
		return nil, err
	}
	return &hook, nil
}

// GetByAccountAndID retrieves an integration hook scoped to an account.
func (r *IntegrationHookRepo) GetByAccountAndID(ctx context.Context, accountID, id uint) (*model.IntegrationHook, error) {
	var hook model.IntegrationHook
	if err := r.db.WithContext(ctx).
		Preload("Inbox").
		Where("account_id = ?", accountID).
		First(&hook, id).Error; err != nil {
		return nil, err
	}
	return &hook, nil
}

// FindByAccount retrieves all integration hooks for an account with pagination.
func (r *IntegrationHookRepo) FindByAccount(ctx context.Context, accountID uint, offset, limit int) ([]model.IntegrationHook, int64, error) {
	var hooks []model.IntegrationHook
	var total int64

	q := r.db.WithContext(ctx).Where("account_id = ?", accountID)
	if err := q.Model(&model.IntegrationHook{}).Count(&total).Error; err != nil {
		return nil, 0, err
	}

	err := q.Preload("Inbox").Offset(offset).Limit(limit).Order("id ASC").Find(&hooks).Error
	return hooks, total, err
}

// FindByAccountAndApp retrieves integration hooks for a Chatwoot app id.
func (r *IntegrationHookRepo) FindByAccountAndApp(ctx context.Context, accountID uint, appID string) ([]model.IntegrationHook, error) {
	var hooks []model.IntegrationHook
	err := r.db.WithContext(ctx).
		Preload("Inbox").
		Where("account_id = ?", accountID).
		Where("app_id = ? OR (app_id = '' AND hook_type = ?)", appID, appID).
		Order("id ASC").
		Find(&hooks).Error
	return hooks, err
}

// FindByAccountAndType retrieves integration hooks for an account filtered by hook type.
func (r *IntegrationHookRepo) FindByAccountAndType(ctx context.Context, accountID uint, hookType model.HookType) ([]model.IntegrationHook, error) {
	var hooks []model.IntegrationHook
	err := r.db.WithContext(ctx).
		Where("account_id = ? AND hook_type = ?", accountID, hookType).
		Order("id ASC").
		Find(&hooks).Error
	return hooks, err
}

// FindByInbox retrieves integration hooks for a specific inbox.
func (r *IntegrationHookRepo) FindByInbox(ctx context.Context, accountID uint, inboxID uint) ([]model.IntegrationHook, error) {
	var hooks []model.IntegrationHook
	err := r.db.WithContext(ctx).
		Where("account_id = ? AND inbox_id = ?", accountID, inboxID).
		Order("id ASC").
		Find(&hooks).Error
	return hooks, err
}

// Create creates a new integration hook.
func (r *IntegrationHookRepo) Create(ctx context.Context, hook *model.IntegrationHook) error {
	return r.db.WithContext(ctx).Create(hook).Error
}

// Update updates an existing integration hook.
func (r *IntegrationHookRepo) Update(ctx context.Context, hook *model.IntegrationHook) error {
	return r.db.WithContext(ctx).Save(hook).Error
}

// Delete deletes an integration hook by ID (soft delete via gorm.DeletedAt).
func (r *IntegrationHookRepo) Delete(ctx context.Context, id uint) error {
	return r.db.WithContext(ctx).Delete(&model.IntegrationHook{}, id).Error
}

// IntegrationAppRepo implements GORM repository for IntegrationApp.
type IntegrationAppRepo struct {
	db *gorm.DB
}

// NewIntegrationAppRepo creates a new IntegrationApp repository.
func NewIntegrationAppRepo(db *gorm.DB) *IntegrationAppRepo {
	return &IntegrationAppRepo{db: db}
}

// List retrieves all enabled integration apps.
func (r *IntegrationAppRepo) List(ctx context.Context) ([]model.IntegrationApp, error) {
	var apps []model.IntegrationApp
	err := r.db.WithContext(ctx).
		Where("enabled = ?", true).
		Order("name ASC").
		Find(&apps).Error
	return apps, err
}

// GetByID retrieves an integration app by ID.
func (r *IntegrationAppRepo) GetByID(ctx context.Context, id uint) (*model.IntegrationApp, error) {
	var app model.IntegrationApp
	if err := r.db.WithContext(ctx).First(&app, id).Error; err != nil {
		return nil, err
	}
	return &app, nil
}

// GetByHookType retrieves an integration app by hook type.
func (r *IntegrationAppRepo) GetByHookType(ctx context.Context, hookType model.HookType) (*model.IntegrationApp, error) {
	var app model.IntegrationApp
	if err := r.db.WithContext(ctx).Where("hook_type = ?", hookType).First(&app).Error; err != nil {
		return nil, err
	}
	return &app, nil
}

// GetByAppID retrieves an integration app by Chatwoot app id.
func (r *IntegrationAppRepo) GetByAppID(ctx context.Context, appID string) (*model.IntegrationApp, error) {
	return r.GetByHookType(ctx, model.HookType(appID))
}