using ClaudeDo.Data;

namespace ClaudeDo.Data.Tests;

public class PromptFilesTests
{
    [Fact]
    public void RenderTemplate_replaces_known_tokens()
    {
        var outp = PromptFiles.RenderTemplate(
            "Plan for {date}, cap {maxTasks}.",
            new Dictionary<string, string> { ["date"] = "2026-06-04", ["maxTasks"] = "5" });
        Assert.Equal("Plan for 2026-06-04, cap 5.", outp);
    }

    [Fact]
    public void RenderTemplate_leaves_unknown_braces_intact()
    {
        var outp = PromptFiles.RenderTemplate(
            "## {Wochentag}, {dd.MM.yyyy} — {start}",
            new Dictionary<string, string> { ["start"] = "01.06.2026" });
        Assert.Equal("## {Wochentag}, {dd.MM.yyyy} — 01.06.2026", outp);
    }

    [Fact]
    public void RenderTemplate_does_not_substitute_tokens_that_appear_inside_a_value()
    {
        // A sharpened task description can legitimately contain "{repo}" (a config snippet, a
        // path placeholder). Substitution must be a single pass over the TEMPLATE, so injected
        // values are never rescanned.
        var outp = PromptFiles.RenderTemplate(
            "Repo: {repo}\n\n{tasks}",
            new Dictionary<string, string>
            {
                ["repo"] = "C:\\real\\repo",
                ["tasks"] = "- Fix the {repo} placeholder in the config template",
            });

        Assert.Equal("Repo: C:\\real\\repo\n\n- Fix the {repo} placeholder in the config template", outp);
    }

    [Fact]
    public void RenderTemplate_result_is_independent_of_dictionary_order()
    {
        const string template = "Scope: {scope}\nRepo: {repo}\n\n{tasks}";
        var task = "- Document {scope} and {repo} tokens";

        var tasksLast = PromptFiles.RenderTemplate(template, new Dictionary<string, string>
        {
            ["scope"] = "List: Bugs", ["repo"] = "C:\\repo", ["tasks"] = task,
        });
        var tasksFirst = PromptFiles.RenderTemplate(template, new Dictionary<string, string>
        {
            ["tasks"] = task, ["repo"] = "C:\\repo", ["scope"] = "List: Bugs",
        });

        Assert.Equal(tasksLast, tasksFirst);
        Assert.Contains("- Document {scope} and {repo} tokens", tasksLast);
    }

    [Fact]
    public void DefaultFor_system_mentions_blocked_marker_and_scope()
    {
        var d = PromptFiles.DefaultFor(PromptKind.System);
        Assert.Contains("CLAUDEDO_BLOCKED:", d);
        Assert.Contains("unattended", d, StringComparison.OrdinalIgnoreCase);
    }

    [Fact]
    public void DefaultFor_planning_initial_has_title_and_description_tokens()
    {
        var d = PromptFiles.DefaultFor(PromptKind.PlanningInitial);
        Assert.Contains("{title}", d);
        Assert.Contains("{description}", d);
    }

    [Fact]
    public void PathFor_planning_is_planning_system_file()
    {
        Assert.EndsWith("planning-system.md", PromptFiles.PathFor(PromptKind.Planning));
    }

    [Fact]
    public void PathFor_merge_helper_kinds_map_to_their_files()
    {
        Assert.EndsWith("merge-helper-triage.md", PromptFiles.PathFor(PromptKind.MergeHelperTriage));
        Assert.EndsWith("merge-helper-execute.md", PromptFiles.PathFor(PromptKind.MergeHelperExecute));
        Assert.EndsWith("merge-helper-initial.md", PromptFiles.PathFor(PromptKind.MergeHelperInitial));
        Assert.EndsWith("merge-helper-handoff.md", PromptFiles.PathFor(PromptKind.MergeHelperHandoff));
    }

    [Fact]
    public void DefaultFor_merge_helper_triage_covers_phases_0_to_2_only()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperTriage);
        Assert.False(string.IsNullOrWhiteSpace(d));
        Assert.Contains("## Phase 0", d);
        Assert.Contains("## Phase 1", d);
        Assert.Contains("## Phase 2", d);
        // The run/review/merge phases belong to the handoff session's prompt, not this one —
        // carrying them here is what made the handoff session redo dedupe work.
        Assert.DoesNotContain("## Phase 3", d);
        Assert.DoesNotContain("## Phase 4", d);
        Assert.DoesNotContain("## Phase 5", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_execute_covers_phases_3_to_5_only()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperExecute);
        Assert.False(string.IsNullOrWhiteSpace(d));
        Assert.Contains("## Phase 3", d);
        Assert.Contains("## Phase 4", d);
        Assert.Contains("## Phase 5", d);
        Assert.DoesNotContain("## Phase 0", d);
        Assert.DoesNotContain("## Phase 1", d);
        Assert.DoesNotContain("## Phase 2", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_triage_names_the_tools_its_phases_need()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperTriage);
        Assert.Contains("batch_get_tasks", d);      // phase 0
        Assert.Contains("update_task", d);          // phase 1 + 2
        Assert.Contains("handoff_list_handler", d); // handoff
        // Triage never runs or merges anything.
        Assert.DoesNotContain("review_task", d);
        Assert.DoesNotContain("continue_merge", d);
        Assert.DoesNotContain("preview_merge_set", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_execute_names_the_tools_its_phases_need()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperExecute);
        Assert.Contains("get_app_settings", d);     // phase 3
        Assert.Contains("update_task_status", d);   // phase 3
        Assert.Contains("wait_for_task_change", d); // phase 3
        Assert.Contains("preview_merge_set", d);    // phase 4
        Assert.Contains("review_task", d);          // phase 4
        Assert.Contains("continue_merge", d);       // phase 4
        Assert.DoesNotContain("run_task_now(", d);  // single override slot — must not batch-start
    }

    [Fact]
    public void DefaultFor_merge_helper_execute_waits_with_the_real_server_side_cap()
    {
        // TaskWaitMcpTools.MaxTimeoutSeconds is 900 and every ClaudeDo launcher sets
        // MCP_TOOL_TIMEOUT=930000ms. The prompt used to say 170 -- a leftover from the retired
        // 200000ms era -- which burned ~5x the turns on re-waiting.
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperExecute);
        Assert.Contains("timeoutSeconds 900", d);
        Assert.DoesNotContain("170", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_execute_waits_through_waiting_for_children()
    {
        // Without the flag, a parent with children reports "changed" as soon as it reaches
        // WaitingForChildren, so the handler would advance to review/merge while children run.
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperExecute);
        Assert.Contains("treatWaitingForChildrenAsBusy=true", d);
        Assert.Contains("WaitingForChildren", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_execute_keeps_the_shared_checkout_git_guard()
    {
        // The handler session never gets PromptKind.System, so this is the ONLY place the
        // never-`git add -A`-in-a-shared-checkout rule reaches a list-handler run.
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperExecute);
        Assert.Contains("git add -- <the resolved paths>", d);
        Assert.Contains("NEVER `git add -A`", d);
        Assert.Contains("Never use raw `git merge`", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_only_asks_dedupe_questions_when_a_candidate_exists()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperTriage);
        Assert.Contains("move straight to Phase 2", d);
        Assert.Contains("do not ask the user to confirm the absence of duplicates", d);
        Assert.Contains("Cancel nothing without an explicit answer", d);
        Assert.DoesNotContain("whenever you are unsure", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_phase0_treats_brief_as_primary_source()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperTriage);
        Assert.Contains("primary source", d, StringComparison.OrdinalIgnoreCase);
        Assert.Contains("batch_get_tasks", d);
        Assert.Contains("Do not act on any single task before you have read", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_allows_splitting_bundled_tasks_in_phase_2()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperTriage);
        Assert.Contains("Propose splitting it to the user", d);
        Assert.Contains("add_task/add_subtask", d);
        Assert.Contains("do not invent requirements", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_checks_effective_max_turns_before_queuing()
    {
        // Must delegate to get_effective_run_config rather than re-deriving the
        // task/list/preset chain: TaskRunner.ResolveMaxTurns clamps the result to
        // AppSettings.MaxTurnsCeiling, so a hand-derived number can exceed what actually runs.
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperExecute);
        Assert.Contains("get_effective_run_config", d);
        Assert.Contains("clamped", d);
        Assert.Contains("set_task_config", d);
        Assert.DoesNotContain("get_list_config", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_execute_quotes_the_override_slot_error_verbatim()
    {
        // ExternalMcpService.RunTaskNow rewraps OverrideSlotService's raw lowercase throw.
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperExecute);
        Assert.Contains("Override slot busy. Try again later.", d);
    }

    [Fact]
    public void DefaultFor_system_scopes_suggest_improvement_to_top_level_tasks()
    {
        // TaskRunner only allowlists SuggestImprovement when ParentTaskId is null AND
        // PlanningPhase is None, and TaskRunMcpService throws for any child -- but this
        // prompt reaches every run, including planning children.
        var d = PromptFiles.DefaultFor(PromptKind.System);
        Assert.Contains("SuggestImprovement", d);
        Assert.Contains("standalone top-level task", d);
        Assert.Contains("improvements are one layer deep", d);
    }

    [Fact]
    public void DefaultFor_planning_names_every_allowlisted_tool_and_claims_no_exclusivity()
    {
        // WindowsTerminalLauncher allowlists mcp__claudedo__*,Read,Grep,Glob,WebFetch,
        // WebSearch,Skill. The prompt used to say "Use nothing else" right after telling the
        // session to invoke the brainstorming skill -- forbidding its own first instruction.
        var d = PromptFiles.DefaultFor(PromptKind.Planning);
        Assert.DoesNotContain("Use nothing else", d);
        Assert.Contains("Skill", d);
        Assert.Contains("Grep", d);
        Assert.Contains("WebSearch", d);
        Assert.Contains("Write, Edit or Bash", d);
    }

    [Fact]
    public void DefaultFor_refine_gates_the_read_tools_on_an_available_repo()
    {
        // RefinePrompt.BuildArgs only appends Read/Grep/Glob when canReadRepo is true.
        var d = PromptFiles.DefaultFor(PromptKind.Refine);
        Assert.Contains("only when a repository is available", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_checks_file_collisions_before_merge_order()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperExecute);
        Assert.Contains("Default to the order the brief lists them", d);
        Assert.Contains("tell the user which tasks collide", d);
        Assert.Contains("NORMAL case, not a failure", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_initial_has_repo_token()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperInitial);
        Assert.Contains("{repo}", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_initial_has_scope_and_tasks_tokens()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperInitial);
        Assert.False(string.IsNullOrWhiteSpace(d));
        Assert.Contains("{scope}", d);
        Assert.Contains("{tasks}", d);
    }

    [Fact]
    public void RenderTemplate_merge_helper_initial_substitutes_scope_and_tasks()
    {
        var outp = PromptFiles.RenderTemplate(
            PromptFiles.DefaultFor(PromptKind.MergeHelperInitial),
            new Dictionary<string, string> { ["scope"] = "All lists", ["tasks"] = "- [Idle] T1" });
        Assert.Contains("Scope: All lists", outp);
        Assert.Contains("- [Idle] T1", outp);
        Assert.DoesNotContain("{scope}", outp);
        Assert.DoesNotContain("{tasks}", outp);
    }

    [Fact]
    public void DefaultFor_merge_helper_handoff_has_scope_repo_and_tasks_tokens()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperHandoff);
        Assert.False(string.IsNullOrWhiteSpace(d));
        Assert.Contains("{scope}", d);
        Assert.Contains("{repo}", d);
        Assert.Contains("{tasks}", d);
    }

    [Fact]
    public void DefaultFor_merge_helper_handoff_points_at_phase_3()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperHandoff);
        Assert.Contains("phase 3", d, StringComparison.OrdinalIgnoreCase);
    }

    [Fact]
    public void RenderTemplate_merge_helper_handoff_substitutes_scope_repo_and_tasks()
    {
        var outp = PromptFiles.RenderTemplate(
            PromptFiles.DefaultFor(PromptKind.MergeHelperHandoff),
            new Dictionary<string, string>
            {
                ["scope"] = "List: Bugs",
                ["repo"] = "C:\\repo",
                ["tasks"] = "- [WaitingForReview] T1 (id: abc)",
            });
        Assert.Contains("Scope: List: Bugs", outp);
        Assert.Contains("Repo: C:\\repo", outp);
        Assert.Contains("- [WaitingForReview] T1 (id: abc)", outp);
        Assert.DoesNotContain("{scope}", outp);
        Assert.DoesNotContain("{repo}", outp);
        Assert.DoesNotContain("{tasks}", outp);
    }

    [Fact]
    public void DefaultFor_merge_helper_tells_the_session_to_hand_off_after_phase_2()
    {
        var d = PromptFiles.DefaultFor(PromptKind.MergeHelperTriage);
        Assert.Contains("handoff_list_handler", d);
        Assert.Contains("do not continue into phase 3 yourself", d, StringComparison.OrdinalIgnoreCase);
    }
}