feat: add working hours and salary negotiable logic

Backend:
- Updated DTOs to include SalaryNegotiable and WorkingHours
- Updated JobService to map and persist these fields (CREATE, GET, UPDATE)
- Ensure DB queries include new columns

Frontend:
- Added 'Working Hours' (Jornada de Trabalho) dropdown to PostJobPage
- Updated state and submit logic
- Improved salary display in confirmation step

Seeder:
- Updated jobs seeder to include salary_negotiable and valid working_hours

backend/internal/dto/requests.go

@@ -9,6 +9,7 @@ type CreateJobRequest struct {
 	SalaryMax        *float64               `json:"salaryMax,omitempty"`
 	SalaryType       *string                `json:"salaryType,omitempty" validate:"omitempty,oneof=hourly daily weekly monthly yearly"`
 	Currency         *string                `json:"currency,omitempty" validate:"omitempty,oneof=BRL USD EUR GBP JPY"`
+	SalaryNegotiable bool                   `json:"salaryNegotiable"`
 	EmploymentType   *string                `json:"employmentType,omitempty" validate:"omitempty,oneof=full-time part-time dispatch contract temporary training voluntary permanent"`
 	WorkingHours     *string                `json:"workingHours,omitempty"`
 	Location         *string                `json:"location,omitempty"`
@@ -29,6 +30,7 @@ type UpdateJobRequest struct {
 	SalaryMax        *float64               `json:"salaryMax,omitempty"`
 	SalaryType       *string                `json:"salaryType,omitempty" validate:"omitempty,oneof=hourly daily weekly monthly yearly"`
 	Currency         *string                `json:"currency,omitempty" validate:"omitempty,oneof=BRL USD EUR GBP JPY"`
+	SalaryNegotiable *bool                  `json:"salaryNegotiable,omitempty"`
 	EmploymentType   *string                `json:"employmentType,omitempty" validate:"omitempty,oneof=full-time part-time dispatch contract temporary training voluntary permanent"`
 	WorkingHours     *string                `json:"workingHours,omitempty"`
 	Location         *string                `json:"location,omitempty"`

backend/internal/services/job_service.go

@@ -26,8 +26,8 @@ func (s *JobService) CreateJob(req dto.CreateJobRequest, createdBy string) (*mod
 		INSERT INTO jobs (
 			company_id, created_by, title, description, salary_min, salary_max, salary_type,
 			employment_type, working_hours, location, region_id, city_id,
-			requirements, benefits, visa_support, language_level, status, created_at, updated_at
+			requirements, benefits, visa_support, language_level, status, created_at, updated_at, salary_negotiable
-		) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19)
+		) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19, $20)
 		RETURNING id, created_at, updated_at
 	`
 
@@ -39,6 +39,7 @@ func (s *JobService) CreateJob(req dto.CreateJobRequest, createdBy string) (*mod
 		SalaryMin:        req.SalaryMin,
 		SalaryMax:        req.SalaryMax,
 		SalaryType:       req.SalaryType,
+		SalaryNegotiable: req.SalaryNegotiable,
 		EmploymentType:   req.EmploymentType,
 		WorkingHours:     req.WorkingHours,
 		Location:         req.Location,
@@ -60,7 +61,7 @@ func (s *JobService) CreateJob(req dto.CreateJobRequest, createdBy string) (*mod
 		query,
 		job.CompanyID, job.CreatedBy, job.Title, job.Description, job.SalaryMin, job.SalaryMax, job.SalaryType,
 		job.EmploymentType, job.WorkingHours, job.Location, job.RegionID, job.CityID,
-		job.Requirements, job.Benefits, job.VisaSupport, job.LanguageLevel, job.Status, job.CreatedAt, job.UpdatedAt,
+		job.Requirements, job.Benefits, job.VisaSupport, job.LanguageLevel, job.Status, job.CreatedAt, job.UpdatedAt, job.SalaryNegotiable,
 	).Scan(&job.ID, &job.CreatedAt, &job.UpdatedAt)
 
 	if err != nil {
@@ -76,7 +77,7 @@ func (s *JobService) GetJobs(filter dto.JobFilterQuery) ([]models.JobWithCompany
 	baseQuery := `
                 SELECT
                         j.id, j.company_id, j.title, j.description, j.salary_min, j.salary_max, j.salary_type,
-                        j.employment_type, j.work_mode, j.location, j.status, j.is_featured, j.created_at, j.updated_at,
+                        j.employment_type, j.work_mode, j.working_hours, j.location, j.status, j.salary_negotiable, j.is_featured, j.created_at, j.updated_at,
                         COALESCE(c.name, '') as company_name, c.logo_url as company_logo_url,
                         						r.name as region_name, ci.name as city_name
                 FROM jobs j
@@ -217,7 +218,7 @@ func (s *JobService) GetJobs(filter dto.JobFilterQuery) ([]models.JobWithCompany
 		var j models.JobWithCompany
 		if err := rows.Scan(
 			&j.ID, &j.CompanyID, &j.Title, &j.Description, &j.SalaryMin, &j.SalaryMax, &j.SalaryType,
-			&j.EmploymentType, &j.WorkMode, &j.Location, &j.Status, &j.IsFeatured, &j.CreatedAt, &j.UpdatedAt,
+			&j.EmploymentType, &j.WorkMode, &j.WorkingHours, &j.Location, &j.Status, &j.SalaryNegotiable, &j.IsFeatured, &j.CreatedAt, &j.UpdatedAt,
 			&j.CompanyName, &j.CompanyLogoURL, &j.RegionName, &j.CityName,
 		); err != nil {
 			return nil, 0, err
@@ -238,13 +239,14 @@ func (s *JobService) GetJobByID(id string) (*models.Job, error) {
 	var j models.Job
 	query := `
 		SELECT id, company_id, title, description, salary_min, salary_max, salary_type,
-		employment_type, working_hours, location, region_id, city_id,
+		employment_type, working_hours, location, region_id, city_id, salary_negotiable,
 		requirements, benefits, visa_support, language_level, status, created_at, updated_at
 		FROM jobs WHERE id = $1
 	`
 	err := s.DB.QueryRow(query, id).Scan(
 		&j.ID, &j.CompanyID, &j.Title, &j.Description, &j.SalaryMin, &j.SalaryMax, &j.SalaryType,
-		&j.EmploymentType, &j.WorkingHours, &j.Location, &j.RegionID, &j.CityID,
+		&j.ID, &j.CompanyID, &j.Title, &j.Description, &j.SalaryMin, &j.SalaryMax, &j.SalaryType,
+		&j.EmploymentType, &j.WorkingHours, &j.Location, &j.RegionID, &j.CityID, &j.SalaryNegotiable,
 		&j.Requirements, &j.Benefits, &j.VisaSupport, &j.LanguageLevel, &j.Status, &j.CreatedAt, &j.UpdatedAt,
 	)
 	if err != nil {
@@ -274,6 +276,11 @@ func (s *JobService) UpdateJob(id string, req dto.UpdateJobRequest) (*models.Job
 		args = append(args, *req.Status)
 		argId++
 	}
+	if req.SalaryNegotiable != nil {
+		setClauses = append(setClauses, fmt.Sprintf("salary_negotiable = $%d", argId))
+		args = append(args, *req.SalaryNegotiable)
+		argId++
+	}
 
 	if len(setClauses) == 0 {
 		return s.GetJobByID(id)

frontend/src/app/post-job/page.tsx

@@ -65,6 +65,7 @@ export default function PostJobPage() {
         salaryFixed: "", // For fixed salary mode
         employmentType: "",
         workMode: "remote",
+        workingHours: "",
         salaryNegotiable: false, // Candidate proposes salary
     });
 
@@ -145,6 +146,7 @@ export default function PostJobPage() {
                     salaryMax: job.salaryNegotiable ? null : (salaryMode === 'fixed' ? (job.salaryFixed ? parseInt(job.salaryFixed) : null) : (job.salaryMax ? parseInt(job.salaryMax) : null)),
                     salaryNegotiable: job.salaryNegotiable,
                     employmentType: job.employmentType || null,
+                    workingHours: job.workingHours || null,
                     workMode: job.workMode,
                     status: "pending", // Pending review
                 }),
@@ -418,7 +420,7 @@ export default function PostJobPage() {
                                             </>
                                         )}
                                     </div>
-                                    <div className="grid grid-cols-2 gap-4">
+                                    <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
                                         <div>
                                             <Label>Tipo de Contrato</Label>
                                             <select
@@ -434,6 +436,18 @@ export default function PostJobPage() {
                                                 <option value="voluntary">Voluntário</option>
                                             </select>
                                         </div>
+                                        <div>
+                                            <Label>Jornada de Trabalho</Label>
+                                            <select
+                                                value={job.workingHours}
+                                                onChange={(e) => setJob({ ...job, workingHours: e.target.value })}
+                                                className="w-full px-3 py-2 border rounded-lg bg-background"
+                                            >
+                                                <option value="">Qualquer</option>
+                                                <option value="full-time">Tempo Integral</option>
+                                                <option value="part-time">Meio Período</option>
+                                            </select>
+                                        </div>
                                         <div>
                                             <Label>Modelo de Trabalho</Label>
                                             <select
@@ -482,7 +496,7 @@ export default function PostJobPage() {
                                                     ? (job.salaryFixed ? `R$ ${job.salaryFixed}` : "A combinar")
                                                     : (job.salaryMin && job.salaryMax ? `R$ ${job.salaryMin} - R$ ${job.salaryMax}` : "A combinar")
                                         }</p>
-                                        <p><strong>Tipo:</strong> {job.employmentType || "Qualquer"} / {job.workMode}</p>
+                                        <p><strong>Tipo:</strong> {job.employmentType || "Qualquer"} / {job.workingHours === 'full-time' ? 'Integral' : job.workingHours === 'part-time' ? 'Meio Período' : 'Qualquer'} / {job.workMode}</p>
                                     </div>
                                     <div className="flex gap-3">
                                         <Button variant="outline" onClick={() => setStep(2)} className="flex-1">

seeder-api/src/seeders/jobs.js

@@ -103,30 +103,35 @@ export async function seedJobs() {
                 const currency = currencies[i % currencies.length];
                 const salaryType = salaryTypes[i % salaryTypes.length];
 
+                const workingHoursOptions = ['full-time', 'part-time', ''];
+                const workingHours = workingHoursOptions[i % 3];
+                const salaryNegotiable = i % 10 === 0; // 10% negotiable
+
                 // Prepare params for bulk insert
                 jobParams.push(
                     company.id,
                     seedUserId,
                     title,
                     `We are looking for a talented ${title} to join our ${company.name} team. Your role as ${level} will be crucial.`,
-                    salaryMin,
+                    salaryNegotiable ? null : salaryMin, // If negotiable, min is null
-                    salaryMax,
+                    salaryNegotiable ? null : salaryMax, // If negotiable, max is null
                     salaryType,
                     currency,
                     employmentType,
-                    workMode === 'remote' ? 'Flexible' : '9:00-18:00',
+                    workingHours,
                     workMode === 'remote' ? 'Remote (Global)' : internationalLocations[i % internationalLocations.length],
                     JSON.stringify(template.skills),
                     JSON.stringify(getRandomItems(benefits, 4)),
                     i % 5 === 0, // 20% offer visa support
                     'beginner',
                     'open',
-                    workMode
+                    workMode,
+                    salaryNegotiable
                 );
 
                 // ($1, $2, $3, ...), ($18, $19, ...)
                 const placeHolders = [];
-                for (let k = 0; k < 17; k++) {
+                for (let k = 0; k < 18; k++) {
                     placeHolders.push(`$${paramCounter++}`);
                 }
                 jobValues.push(`(${placeHolders.join(',')})`);
@@ -139,7 +144,7 @@ export async function seedJobs() {
                 const query = `
                     INSERT INTO jobs (company_id, created_by, title, description, 
                         salary_min, salary_max, salary_type, currency, employment_type, working_hours,
-                        location, requirements, benefits, visa_support, language_level, status, work_mode)
+                        location, requirements, benefits, visa_support, language_level, status, work_mode, salary_negotiable)
                     VALUES ${jobValues.join(',')}
                 `;
                 await pool.query(query, jobParams);