package actions

import (
	"context"
	"database/sql"
	"fmt"
	"strconv"

	"git.tjp.lol/punchcard/internal/queries"
)

// CreateProject creates a new project for the specified client
func (a *actions) CreateProject(ctx context.Context, name, client string, billableRate *float64) (*queries.Project, error) {
	// Find the client first
	clientRecord, err := a.FindClient(ctx, client)
	if err != nil {
		return nil, fmt.Errorf("invalid client: %w", err)
	}

	var billableRateParam sql.NullInt64
	if billableRate != nil {
		billableRateParam = sql.NullInt64{Int64: int64(*billableRate * 100), Valid: true}
	}

	project, err := a.queries.CreateProject(ctx, queries.CreateProjectParams{
		Name:         name,
		ClientID:     clientRecord.ID,
		BillableRate: billableRateParam,
	})
	if err != nil {
		return nil, fmt.Errorf("failed to create project: %w", err)
	}

	return &project, nil
}

func (a *actions) EditProject(ctx context.Context, id int64, name string, billableRate *float64) (*queries.Project, error) {
	var rateParam sql.NullInt64
	if billableRate != nil {
		rateParam = sql.NullInt64{Int64: int64(*billableRate * 100), Valid: true}
	}

	project, err := a.queries.UpdateProject(ctx, queries.UpdateProjectParams{
		Name:         name,
		BillableRate: rateParam,
		ID:           id,
	})
	if err != nil {
		return nil, fmt.Errorf("failed to update project: %w", err)
	}

	return &project, nil
}

// FindProject finds a project by name or ID
func (a *actions) FindProject(ctx context.Context, nameOrID string) (*queries.Project, error) {
	// Parse as ID if possible, otherwise use 0
	var idParam int64
	if id, err := strconv.ParseInt(nameOrID, 10, 64); err == nil {
		idParam = id
	}

	// Search by both ID and name
	projects, err := a.queries.FindProject(ctx, queries.FindProjectParams{
		ID:   idParam,
		Name: nameOrID,
	})
	if err != nil {
		return nil, fmt.Errorf("database error looking up project: %w", err)
	}

	// Check results
	switch len(projects) {
	case 0:
		return nil, fmt.Errorf("%w: %s", ErrProjectNotFound, nameOrID)
	case 1:
		return &projects[0], nil
	default:
		return nil, fmt.Errorf("%w: %s matches multiple projects", ErrAmbiguousProject, nameOrID)
	}
}

func (a *actions) ArchiveProject(ctx context.Context, id int64) error {
	err := a.queries.ArchiveProject(ctx, id)
	if err != nil {
		return fmt.Errorf("failed to archive project: %w", err)
	}
	return nil
}

func (a *actions) UnarchiveProject(ctx context.Context, id int64) error {
	err := a.queries.UnarchiveProject(ctx, id)
	if err != nil {
		return fmt.Errorf("failed to unarchive project: %w", err)
	}
	return nil
}