david
38e640c617
- Create pagination package with Params and Response structs - Add FindActiveByUserIDWithPagination and CountActiveByUserID methods to HabitRepository interface - Implement pagination in SQLite repository using LIMIT and OFFSET - Update GetUserHabitsHandler to support optional pagination parameters - Modify HTTP endpoint to parse 'page' and 'page_size' query params (default: page=1, page_size=50, max=100) - Add GetUserHabitsResponse DTO with pagination metadata - Maintain backward compatibility - endpoint works with and without pagination params - Add comprehensive tests for pagination logic in repository, handler, and pagination package - Update all mock repositories to implement new pagination methods
55 lines
904 B
Go
55 lines
904 B
Go
package pagination
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type Params struct {
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Page int
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PageSize int
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}
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func NewParams(page, pageSize int) Params {
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if page < 1 {
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page = 1
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}
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if pageSize < 1 {
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pageSize = 50
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}
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if pageSize > 100 {
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pageSize = 100
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}
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return Params{
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Page: page,
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PageSize: pageSize,
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}
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}
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func (p Params) Offset() int {
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return (p.Page - 1) * p.PageSize
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}
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func (p Params) Limit() int {
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return p.PageSize
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}
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type Response struct {
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Page int `json:"page"`
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PageSize int `json:"page_size"`
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TotalItems int `json:"total_items"`
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TotalPages int `json:"total_pages"`
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}
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func NewResponse(params Params, totalItems int) Response {
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totalPages := totalItems / params.PageSize
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if totalItems%params.PageSize > 0 {
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totalPages++
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}
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if totalPages < 1 {
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totalPages = 1
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}
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return Response{
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Page: params.Page,
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PageSize: params.PageSize,
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TotalItems: totalItems,
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TotalPages: totalPages,
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}
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}
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