Add a way to view stack dependencies (#188)

internal/cmd/stack/dependencies.go

@@ -0,0 +1,116 @@
+package stack
+
+import (
+	"fmt"
+
+	"github.com/pkg/errors"
+	"github.com/shurcooL/graphql"
+	"github.com/urfave/cli/v2"
+
+	"github.com/spacelift-io/spacectl/internal/cmd"
+	"github.com/spacelift-io/spacectl/internal/cmd/authenticated"
+)
+
+func dependenciesOn(cliCtx *cli.Context) error {
+	outputFormat, err := cmd.GetOutputFormat(cliCtx)
+	if err != nil {
+		return err
+	}
+
+	got, err := dependenciesListOneStack(cliCtx)
+	if err != nil {
+		return err
+	}
+
+	switch outputFormat {
+	case cmd.OutputFormatTable:
+		return cmd.OutputTable(got.dependsOnTableData(), true)
+	case cmd.OutputFormatJSON:
+		return cmd.OutputJSON(got.DependsOn)
+	}
+
+	return fmt.Errorf("unknown output format: %v", outputFormat)
+}
+
+func dependenciesOff(cliCtx *cli.Context) error {
+	outputFormat, err := cmd.GetOutputFormat(cliCtx)
+	if err != nil {
+		return err
+	}
+
+	got, err := dependenciesListOneStack(cliCtx)
+	if err != nil {
+		return err
+	}
+
+	switch outputFormat {
+	case cmd.OutputFormatTable:
+		return cmd.OutputTable(got.dependedOnByTableData(), true)
+	case cmd.OutputFormatJSON:
+		return cmd.OutputJSON(got.IsDependedOnBy)
+	}
+
+	return fmt.Errorf("unknown output format: %v", outputFormat)
+}
+
+func dependenciesListOneStack(cliCtx *cli.Context) (*stackWithDependencies, error) {
+	id, err := getStackID(cliCtx)
+	if err != nil {
+		return nil, err
+	}
+
+	var query struct {
+		Stack stackWithDependencies `graphql:"stack(id: $id)"`
+	}
+
+	variables := map[string]any{"id": graphql.ID(id)}
+	if err := authenticated.Client.Query(cliCtx.Context, &query, variables); err != nil {
+		return nil, errors.Wrap(err, "failed to query one stack")
+	}
+
+	return &query.Stack, nil
+}
+
+type stackWithDependencies struct {
+	ID     string   `graphql:"id" json:"id"`
+	Labels []string `graphql:"labels" json:"labels"`
+	Space  string   `graphql:"space" json:"space"`
+	Name   string   `graphql:"name" json:"name"`
+
+	DependsOn      []stackDependency `graphql:"dependsOn" json:"dependsOn"`
+	IsDependedOnBy []stackDependency `graphql:"isDependedOnBy" json:"isDependedOnBy"`
+}
+
+type stackDependency struct {
+	Stack struct {
+		ID   string `graphql:"id" json:"id"`
+		Name string `graphql:"name" json:"name"`
+	} `graphql:"stack" json:"stack"`
+
+	DependsOnStack struct {
+		ID   string `graphql:"id" json:"id"`
+		Name string `graphql:"name" json:"name"`
+	} `graphql:"dependsOnStack" json:"dependsOnStack"`
+}
+
+func (s *stackWithDependencies) dependsOnTableData() [][]string {
+	columns := []string{"Name", "ID"}
+
+	tableData := [][]string{columns}
+	for _, dependency := range s.DependsOn {
+		tableData = append(tableData, []string{dependency.DependsOnStack.Name, dependency.DependsOnStack.ID})
+	}
+
+	return tableData
+}
+
+func (s *stackWithDependencies) dependedOnByTableData() [][]string {
+	columns := []string{"Name", "ID"}
+
+	tableData := [][]string{columns}
+	for _, dependency := range s.IsDependedOnBy {
+		tableData = append(tableData, []string{dependency.Stack.Name, dependency.Stack.ID})
+	}
+
+	return tableData
+}

internal/cmd/stack/stack.go

@@ -344,6 +344,34 @@ func Command() *cli.Command {
 					},
 				},
 			},
+			{
+				Name:  "dependencies",
+				Usage: "View stack dependencies",
+				Subcommands: []*cli.Command{
+					{
+						Name:  "on",
+						Usage: "Get stacks which the provided that depends on",
+						Flags: []cli.Flag{
+							flagStackID,
+							cmd.FlagOutputFormat,
+						},
+						Action:    dependenciesOn,
+						Before:    authenticated.Ensure,
+						ArgsUsage: cmd.EmptyArgsUsage,
+					},
+					{
+						Name:  "off",
+						Usage: "Get stacks that depend on the provided stack",
+						Flags: []cli.Flag{
+							flagStackID,
+							cmd.FlagOutputFormat,
+						},
+						Action:    dependenciesOff,
+						Before:    authenticated.Ensure,
+						ArgsUsage: cmd.EmptyArgsUsage,
+					},
+				},
+			},
 		},
 	}
 }