package help

import (
	"fmt"
	"strings"

	"git.hangman-lab.top/zhi/HarborForge.Cli/internal/mode"
)

type leafHelp struct {
	Summary string
	Usage   []string
	Flags   []string
	Notes   []string
}

func RenderLeafHelp(group, cmd string) (string, bool) {
	spec, ok := leafHelpSpec(group, cmd)
	if !ok {
		return "", false
	}

	var b strings.Builder
	name := strings.TrimSpace(strings.TrimSpace(group + " " + cmd))
	name = strings.ReplaceAll(name, "/", " ")
	b.WriteString(fmt.Sprintf("hf %s - %s\n", name, spec.Summary))
	b.WriteString("\nUsage:\n")
	for _, line := range spec.Usage {
		b.WriteString("  " + line + "\n")
	}
	if len(spec.Flags) > 0 {
		b.WriteString("\nFlags:\n")
		for _, line := range spec.Flags {
			b.WriteString("  " + line + "\n")
		}
	}
	if len(spec.Notes) > 0 {
		b.WriteString("\nNotes:\n")
		for _, line := range spec.Notes {
			b.WriteString("  - " + line + "\n")
		}
	}
	return b.String(), true
}

func authFlagHelp() []string {
	if mode.IsPaddedCell() {
		return []string{
			"--json                     Output in JSON format",
		}
	}
	return []string{
		"--token <token>            HarborForge API token (required in manual mode)",
		"--json                     Output in JSON format",
	}
}

func accountManagerFlagHelp() []string {
	flags := []string{
		"--user <username>          Username to create",
		"--pass <password>          Initial password",
		"--email <email>            Email address (defaults to <user>@harborforge.local)",
		"--full-name <name>         Full name",
		"--json                     Output in JSON format",
	}
	if mode.IsPaddedCell() {
		return flags
	}
	return append([]string{"--acc-mgr-token <token>  Account-manager token (required in manual mode)"}, flags...)
}

func leafHelpSpec(group, cmd string) (leafHelp, bool) {
	specs := map[string]leafHelp{
		"config/show": {
			Summary: "View current CLI configuration",
			Usage:   []string{"hf config"},
			Flags:   []string{"--json                     Output in JSON format"},
			Notes: []string{
				"Configuration is stored in .hf-config.json next to the hf binary.",
			},
		},
		"version": {
			Summary: "Show CLI version",
			Usage:   []string{"hf version"},
			Flags:   []string{"--json                     Output in JSON format"},
		},
		"health": {
			Summary: "Check HarborForge API health",
			Usage:   []string{"hf health", "hf health --json"},
			Flags:   authFlagHelp(),
		},
		"config/url": {
			Summary: "Set HarborForge API base URL",
			Usage:   []string{"hf config --url <hf-url>"},
			Notes:   []string{"Writes base-url into .hf-config.json next to the hf binary."},
		},
		"config/acc-mgr-token": {
			Summary: "Store the account-manager token via pass_mgr",
			Usage:   []string{"hf config --acc-mgr-token <token>"},
			Notes:   []string{"Only available in padded-cell mode with pass_mgr installed."},
		},
		"user/create": {
			Summary: "Create a user account",
			Usage:   []string{"hf user create --user <username> [--pass <password>] [--email <email>] [--full-name <name>]"},
			Flags:   accountManagerFlagHelp(),
			Notes: []string{
				"This command uses the account-manager token flow, not the normal user token flow.",
				"In padded-cell mode, --acc-mgr-token is hidden and password generation can fall back to pass_mgr.",
			},
		},
		"user/list":                {Summary: "List users", Usage: []string{"hf user list"}, Flags: authFlagHelp()},
		"user/get":                 {Summary: "Show a user by username", Usage: []string{"hf user get <username>"}, Flags: authFlagHelp()},
		"user/update":              {Summary: "Update a user", Usage: []string{"hf user update <username> [--email <email>] [--full-name <name>] [--pass <password>] [--active <true|false>]"}, Flags: authFlagHelp()},
		"user/activate":            {Summary: "Activate a user", Usage: []string{"hf user activate <username>"}, Flags: authFlagHelp()},
		"user/deactivate":          {Summary: "Deactivate a user", Usage: []string{"hf user deactivate <username>"}, Flags: authFlagHelp()},
		"user/delete":              {Summary: "Delete a user", Usage: []string{"hf user delete <username>"}, Flags: authFlagHelp()},
		"role/list":                {Summary: "List roles", Usage: []string{"hf role list"}, Flags: authFlagHelp()},
		"role/get":                 {Summary: "Show a role by name", Usage: []string{"hf role get <role-name>"}, Flags: authFlagHelp()},
		"role/create":              {Summary: "Create a role", Usage: []string{"hf role create --name <role-name> [--desc <desc>] [--global <true|false>]"}, Flags: authFlagHelp()},
		"role/update":              {Summary: "Update a role", Usage: []string{"hf role update <role-name> [--desc <desc>]"}, Flags: authFlagHelp()},
		"role/delete":              {Summary: "Delete a role", Usage: []string{"hf role delete <role-name>"}, Flags: authFlagHelp()},
		"role/set-permissions":     {Summary: "Replace role permissions", Usage: []string{"hf role set-permissions <role-name> --permission <perm> [--permission <perm> ...]"}, Flags: authFlagHelp()},
		"role/add-permissions":     {Summary: "Add permissions to a role", Usage: []string{"hf role add-permissions <role-name> --permission <perm> [--permission <perm> ...]"}, Flags: authFlagHelp()},
		"role/remove-permissions":  {Summary: "Remove permissions from a role", Usage: []string{"hf role remove-permissions <role-name> --permission <perm> [--permission <perm> ...]"}, Flags: authFlagHelp()},
		"permission/list":          {Summary: "List permissions", Usage: []string{"hf permission list"}, Flags: authFlagHelp()},
		"project/list":             {Summary: "List projects", Usage: []string{"hf project list [--owner <username>] [--order-by <created|name>] [--order-by <...>]"}, Flags: authFlagHelp()},
		"project/get":              {Summary: "Show a project by code", Usage: []string{"hf project get <project-code>"}, Flags: authFlagHelp()},
		"project/create":           {Summary: "Create a project", Usage: []string{"hf project create --name <name> [--desc <desc>] [--repo <repo>]"}, Flags: authFlagHelp()},
		"project/update":           {Summary: "Update a project", Usage: []string{"hf project update <project-code> [--name <name>] [--desc <desc>] [--repo <repo>]"}, Flags: authFlagHelp()},
		"project/delete":           {Summary: "Delete a project", Usage: []string{"hf project delete <project-code>"}, Flags: authFlagHelp()},
		"project/members":          {Summary: "List project members", Usage: []string{"hf project members <project-code>"}, Flags: authFlagHelp()},
		"project/add-member":       {Summary: "Add a member to a project", Usage: []string{"hf project add-member <project-code> --user <username> --role <role-name>"}, Flags: authFlagHelp()},
		"project/remove-member":    {Summary: "Remove a member from a project", Usage: []string{"hf project remove-member <project-code> --user <username>"}, Flags: authFlagHelp()},
		"milestone/list":           {Summary: "List milestones", Usage: []string{"hf milestone list --project <project-code> [--status <status>] [--order-by <due-date|created|name>] [--order-by <...>]"}, Flags: authFlagHelp()},
		"milestone/get":            {Summary: "Show a milestone by code", Usage: []string{"hf milestone get <milestone-code>"}, Flags: authFlagHelp()},
		"milestone/create":         {Summary: "Create a milestone", Usage: []string{"hf milestone create --project <project-code> --title <title> [--desc <desc>] [--due <date>]"}, Flags: authFlagHelp()},
		"milestone/update":         {Summary: "Update a milestone", Usage: []string{"hf milestone update <milestone-code> [--title <title>] [--desc <desc>] [--status <status>] [--due <date>]"}, Flags: authFlagHelp()},
		"milestone/delete":         {Summary: "Delete a milestone", Usage: []string{"hf milestone delete <milestone-code>"}, Flags: authFlagHelp()},
		"milestone/progress":       {Summary: "Show milestone progress", Usage: []string{"hf milestone progress <milestone-code>"}, Flags: authFlagHelp()},
		"task/list":                {Summary: "List tasks", Usage: []string{"hf task list [--project <project-code>] [--milestone <milestone-code>] [--status <status>] [--taken-by <me|null|username>] [--due-today <true|false>] [--order-by <due-date|priority|created|name>] [--order-by <...>]"}, Flags: authFlagHelp()},
		"task/get":                 {Summary: "Show a task by code", Usage: []string{"hf task get <task-code>"}, Flags: authFlagHelp()},
		"task/create":              {Summary: "Create a task", Usage: []string{"hf task create --project <project-code> --title <title> [--milestone <milestone-code>] [--type <type>] [--priority <priority>] [--desc <desc>]"}, Flags: authFlagHelp()},
		"task/update":              {Summary: "Update a task", Usage: []string{"hf task update <task-code> [--title <title>] [--desc <desc>] [--status <status>] [--priority <priority>] [--assignee <username|null>]"}, Flags: authFlagHelp()},
		"task/transition":          {Summary: "Transition a task to a new status", Usage: []string{"hf task transition <task-code> <status>"}, Flags: authFlagHelp()},
		"task/take":                {Summary: "Assign a task to the current user", Usage: []string{"hf task take <task-code>"}, Flags: authFlagHelp()},
		"task/delete":              {Summary: "Delete a task", Usage: []string{"hf task delete <task-code>"}, Flags: authFlagHelp()},
		"task/search":              {Summary: "Search tasks", Usage: []string{"hf task search --query <text> [--project <project-code>] [--status <status>]"}, Flags: authFlagHelp()},
		"meeting/list":             {Summary: "List meetings", Usage: []string{"hf meeting list [--project <project-code>] [--status <status>] [--order-by <created|due-date|name>] [--order-by <...>]"}, Flags: authFlagHelp()},
		"meeting/get":              {Summary: "Show a meeting by code", Usage: []string{"hf meeting get <meeting-code>"}, Flags: authFlagHelp()},
		"meeting/create":           {Summary: "Create a meeting", Usage: []string{"hf meeting create --project <project-code> --title <title> [--milestone <milestone-code>] [--desc <desc>] [--time <datetime>]"}, Flags: authFlagHelp()},
		"meeting/update":           {Summary: "Update a meeting", Usage: []string{"hf meeting update <meeting-code> [--title <title>] [--desc <desc>] [--status <status>] [--time <datetime>]"}, Flags: authFlagHelp()},
		"meeting/attend":           {Summary: "Attend a meeting", Usage: []string{"hf meeting attend <meeting-code>"}, Flags: authFlagHelp()},
		"meeting/delete":           {Summary: "Delete a meeting", Usage: []string{"hf meeting delete <meeting-code>"}, Flags: authFlagHelp()},
		"support/list":             {Summary: "List support tickets", Usage: []string{"hf support list [--taken-by <me|null|username>] [--status <status>] [--order-by <due-date|priority|created|name>] [--order-by <...>]"}, Flags: authFlagHelp()},
		"support/get":              {Summary: "Show a support ticket by code", Usage: []string{"hf support get <support-code>"}, Flags: authFlagHelp()},
		"support/create":           {Summary: "Create a support ticket", Usage: []string{"hf support create --title <title> [--project <project-code>] [--desc <desc>] [--priority <priority>]"}, Flags: authFlagHelp()},
		"support/update":           {Summary: "Update a support ticket", Usage: []string{"hf support update <support-code> [--title <title>] [--desc <desc>] [--status <status>] [--priority <priority>]"}, Flags: authFlagHelp()},
		"support/take":             {Summary: "Assign a support ticket to the current user", Usage: []string{"hf support take <support-code>"}, Flags: authFlagHelp()},
		"support/transition":       {Summary: "Transition a support ticket to a new status", Usage: []string{"hf support transition <support-code> <status>"}, Flags: authFlagHelp()},
		"support/delete":           {Summary: "Delete a support ticket", Usage: []string{"hf support delete <support-code>"}, Flags: authFlagHelp()},
		"proposal/list":             {Summary: "List proposals", Usage: []string{"hf proposal list --project <project-code> [--status <status>] [--order-by <created|name>] [--order-by <...>]"}, Flags: authFlagHelp()},
		"proposal/get":              {Summary: "Show a proposal by code", Usage: []string{"hf proposal get <proposal-code>"}, Flags: authFlagHelp()},
		"proposal/create":           {Summary: "Create a proposal", Usage: []string{"hf proposal create --project <project-code> --title <title> --desc <desc>"}, Flags: authFlagHelp()},
		"proposal/update":           {Summary: "Update a proposal", Usage: []string{"hf proposal update <proposal-code> [--title <title>] [--desc <desc>]"}, Flags: authFlagHelp()},
		"proposal/accept":           {Summary: "Accept a proposal and generate story tasks", Usage: []string{"hf proposal accept <proposal-code> --milestone <milestone-code>"}, Flags: authFlagHelp(), Notes: []string{"Accept generates story/* tasks from all essentials under the proposal."}},
		"proposal/reject":           {Summary: "Reject a proposal", Usage: []string{"hf proposal reject <proposal-code> [--reason <reason>]"}, Flags: authFlagHelp()},
		"proposal/reopen":           {Summary: "Reopen a proposal", Usage: []string{"hf proposal reopen <proposal-code>"}, Flags: authFlagHelp()},
		"proposal/essential":        {Summary: "Manage proposal essentials", Usage: []string{"hf proposal essential list --proposal <proposal-code>", "hf proposal essential create --proposal <proposal-code> --title <title> --type <feature|improvement|refactor> [--desc <desc>]", "hf proposal essential update <essential-code> --proposal <proposal-code> [--title <title>] [--type <type>] [--desc <desc>]", "hf proposal essential delete <essential-code> --proposal <proposal-code>"}, Flags: authFlagHelp()},
		"proposal/essential/list":   {Summary: "List essentials for a proposal", Usage: []string{"hf proposal essential list --proposal <proposal-code>"}, Flags: authFlagHelp()},
		"proposal/essential/create": {Summary: "Create an essential", Usage: []string{"hf proposal essential create --proposal <proposal-code> --title <title> --type <feature|improvement|refactor> [--desc <desc>]"}, Flags: authFlagHelp()},
		"proposal/essential/update": {Summary: "Update an essential", Usage: []string{"hf proposal essential update <essential-code> --proposal <proposal-code> [--title <title>] [--type <type>] [--desc <desc>]"}, Flags: authFlagHelp()},
		"proposal/essential/delete": {Summary: "Delete an essential", Usage: []string{"hf proposal essential delete <essential-code> --proposal <proposal-code>"}, Flags: authFlagHelp()},
		"comment/add":              {Summary: "Add a comment to a task", Usage: []string{"hf comment add --task <task-code> --content <text>"}, Flags: authFlagHelp()},
		"comment/list":             {Summary: "List comments for a task", Usage: []string{"hf comment list --task <task-code>"}, Flags: authFlagHelp()},
		"worklog/add":              {Summary: "Add a work log entry", Usage: []string{"hf worklog add --task <task-code> --hours <n> [--desc <text>] [--date <yyyy-mm-dd>]"}, Flags: authFlagHelp()},
		"worklog/list":             {Summary: "List work logs by task or user", Usage: []string{"hf worklog list [--task <task-code>] [--user <username>]"}, Flags: authFlagHelp()},
		"monitor/overview":         {Summary: "Show monitor overview", Usage: []string{"hf monitor overview"}, Flags: authFlagHelp()},
		"monitor/server":           {Summary: "Manage monitor servers", Usage: []string{"hf monitor server list", "hf monitor server get <identifier>", "hf monitor server create --identifier <identifier> [--name <display-name>]", "hf monitor server delete <identifier>"}, Flags: authFlagHelp()},
		"monitor/server/list":      {Summary: "List monitor servers", Usage: []string{"hf monitor server list"}, Flags: authFlagHelp()},
		"monitor/server/get":       {Summary: "Show a monitor server by identifier", Usage: []string{"hf monitor server get <identifier>"}, Flags: authFlagHelp()},
		"monitor/server/create":    {Summary: "Create a monitor server", Usage: []string{"hf monitor server create --identifier <identifier> [--name <display-name>]"}, Flags: authFlagHelp()},
		"monitor/server/delete":    {Summary: "Delete a monitor server", Usage: []string{"hf monitor server delete <identifier>"}, Flags: authFlagHelp()},
		"monitor/api-key":          {Summary: "Manage monitor API keys", Usage: []string{"hf monitor api-key generate <identifier>", "hf monitor api-key revoke <identifier>"}, Flags: authFlagHelp()},
		"monitor/api-key/generate": {Summary: "Generate a monitor API key", Usage: []string{"hf monitor api-key generate <identifier>"}, Flags: authFlagHelp()},
		"monitor/api-key/revoke":   {Summary: "Revoke a monitor API key", Usage: []string{"hf monitor api-key revoke <identifier>"}, Flags: authFlagHelp()},
	}

	if group == "" {
		spec, ok := specs[cmd]
		return spec, ok
	}
	spec, ok := specs[group+"/"+cmd]
	return spec, ok
}