package database

import (
	"context"
	"log/slog"

	"github.com/yyc12345/coconut-leaf/backend/config"
)

// ResponseBody is the envelope returned by every Database operation, mirroring
// the legacy database.ResponseBody. Data is any so each method can return its
// own shape (scalar, []string, []any row, [][]any rows, ...). JSON tags keep the
// legacy lowercase keys (success/error/data) used by ConstructResponseBody.
type ResponseBody struct {
	Success bool   `json:"success"`
	Error   string `json:"error"`
	Data    any    `json:"data"`
}

// CalendarUpdateOptions carries the optional fields of CalendarUpdate. A nil
// pointer means "not provided", mirroring the legacy **optArgs semantics: a
// field is applied only when its pointer is non-nil.
type CalendarUpdateOptions struct {
	BelongTo           *string
	Title              *string
	Description        *string
	EventDateTimeStart *int64
	EventDateTimeEnd   *int64
	LoopRules          *string
	TimezoneOffset     *int64
}

// AdminUpdateOptions carries the optional fields of AdminUpdate. A nil pointer
// means "not provided".
type AdminUpdateOptions struct {
	Password *string
	IsAdmin  *bool
}

// Deps bundles the shared dependencies a database implementation needs: the
// loaded configuration and a logger. It is passed to database constructors and
// stored inside each implementation so they can read config and emit logs.
type Deps struct {
	Cfg    *config.Config
	Logger *slog.Logger
}

// Database describes every database operation the Gin server may use. It is the
// Go equivalent of the legacy CalendarDatabase public surface: each method takes
// a context.Context for cancellation and returns a ResponseBody whose
// Success/Error fields encode failure (mirroring the legacy decorator behavior).
type Database interface {
	Init(username, password string) error
	Close() error

	CommonSalt(ctx context.Context, username string) ResponseBody
	CommonLogin(ctx context.Context, username, password, clientUa, clientIp string) ResponseBody
	CommonWebLogin(ctx context.Context, username, password, clientUa, clientIp string) ResponseBody
	CommonLogout(ctx context.Context, token string) ResponseBody
	CommonTokenValid(ctx context.Context, token string) ResponseBody

	CalendarGetFull(ctx context.Context, token string, startDateTime, endDateTime int64) ResponseBody
	CalendarGetList(ctx context.Context, token string, startDateTime, endDateTime int64) ResponseBody
	CalendarGetDetail(ctx context.Context, token, uuid string) ResponseBody
	CalendarUpdate(ctx context.Context, token, uuid, lastChange string, opts CalendarUpdateOptions) ResponseBody
	CalendarAdd(ctx context.Context, token, belongTo, title, description string, eventDateTimeStart, eventDateTimeEnd int64, loopRules string, timezoneOffset int64) ResponseBody
	CalendarDelete(ctx context.Context, token, uuid, lastChange string) ResponseBody

	CollectionGetFullOwn(ctx context.Context, token string) ResponseBody
	CollectionGetListOwn(ctx context.Context, token string) ResponseBody
	CollectionGetDetailOwn(ctx context.Context, token, uuid string) ResponseBody
	CollectionAddOwn(ctx context.Context, token, name string) ResponseBody
	CollectionUpdateOwn(ctx context.Context, token, uuid, name, lastChange string) ResponseBody
	CollectionDeleteOwn(ctx context.Context, token, uuid, lastChange string) ResponseBody
	CollectionGetSharing(ctx context.Context, token, uuid string) ResponseBody
	CollectionDeleteSharing(ctx context.Context, token, uuid, target, lastChange string) ResponseBody
	CollectionAddSharing(ctx context.Context, token, uuid, target, lastChange string) ResponseBody
	CollectionGetShared(ctx context.Context, token string) ResponseBody

	TodoGetFull(ctx context.Context, token string) ResponseBody
	TodoGetList(ctx context.Context, token string) ResponseBody
	TodoGetDetail(ctx context.Context, token, uuid string) ResponseBody
	TodoAdd(ctx context.Context, token string) ResponseBody
	TodoUpdate(ctx context.Context, token, uuid, data, lastChange string) ResponseBody
	TodoDelete(ctx context.Context, token, uuid, lastChange string) ResponseBody

	AdminGet(ctx context.Context, token string) ResponseBody
	AdminAdd(ctx context.Context, token, username string) ResponseBody
	AdminUpdate(ctx context.Context, token, username string, opts AdminUpdateOptions) ResponseBody
	AdminDelete(ctx context.Context, token, username string) ResponseBody

	ProfileIsAdmin(ctx context.Context, token string) ResponseBody
	ProfileChangePassword(ctx context.Context, token, password string) ResponseBody
	ProfileGetToken(ctx context.Context, token string) ResponseBody
	ProfileDeleteToken(ctx context.Context, token, deleteToken string) ResponseBody
}